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Getting Started

Would you like to get started with CitNetExplorer? Below we provide a step-by-step tutorial that guides you through the process of collecting bibliographic data, constructing a citation network, and visualizing and analyzing the network.

Tutorial

The tutorial is also available in a PDF file.

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  • Hepdrey March 13th, 2020 10:29 pm
    There is one bug I noticed:
    This is my result page from Web of Science:
    http://apps.webofknowledge.com/Search.do?product=WOS&SID=8C4iX5VgzlWuSmz9fVG&search_mode=GeneralSearch&prID=c269aa1b-b07d-4703-8ee4-cc5ec170ee79
    Just in case you need my searching criteria:
    You searched for: TOPIC: (independence screening) OR TOPIC: (variable screening) OR TOPIC: (feature screening)
    Refined by: WEB OF SCIENCE CATEGORIES: ( STATISTICS PROBABILITY ) AND PUBLICATION YEARS: ( 2020 OR 2019 )
    Timespan: 1996-2020. Indexes: SCI-EXPANDED, SSCI, A&HCI, CPCI-S, CPCI-SSH, BKCI-S, BKCI-SSH, ESCI, CCR-EXPANDED, IC.
    I exported the data as specified in the "Getting started.pdf", but when I open the file, the program died... One exported data entry that possibly crashed the program is from this paper:
    Ultra-high dimensional variable screening via Gram-Schmidt orthogonalization
    By: Wang, Huiwen; Liu, Ruiping; Wang, Shanshan; et al.
    COMPUTATIONAL STATISTICS
    How the above information helpful for the support team.
    Reply
    • Hepdrey March 14th, 2020 12:29 am
      I guess all that with "Early Access:“ are not working well.
      Reply
      • Ludo Waltman March 14th, 2020 9:38 pm
        This indeed seems to be the problem. For more information, please see the box 'Problems opening Web of Science files' on www.citnetexplorer.nl.
        Reply
        • Hepdrey March 15th, 2020 1:30 am
          Thanks for your help and support!
          Reply
  • Jose Alfaro March 2nd, 2020 4:11 pm
    Reply
  • David Ronco February 22nd, 2020 12:01 am
    Reply
  • Isabel Cristina Velasco Zamora February 19th, 2020 7:45 pm
    Hi.
    Im trying to execute the program in mine laptop both Mac and windows, but, has been imposible, the program report the following "java.lang.NullPointerException" error.
    What can I do to fix ti?
    Reply
    • Ludo Waltman February 20th, 2020 12:51 am
      Please see the box 'Problems opening Web of Science files' on www.citnetexplorer.nl.
      Reply
  • Amir February 13th, 2020 11:45 am
    Is it possible to import Scopus' finding for Cluster Mapping by CitNetExplorer software?
    Reply
    • Ludo Waltman February 23rd, 2020 8:55 pm
      Unfortunately, CitNetExplorer currently is not able to process data exported from Scopus.
      Reply
  • Matteo Belletti February 11th, 2020 4:16 pm
    Dear Ludo, is it possible to save the list of publications of a citation pattern?
    thanks in advance
    matteo
    Reply
    • Ludo Waltman February 23rd, 2020 9:07 pm
      Yes, this is possible. You can use the 'Save' button to save the list of publications in a so-called publications file. This is a plain text file that can for instance be opened in a spreadsheet program such as MS Excel.
      Reply
      • Matteo February 24th, 2020 8:54 am
        many thanks, Ludo.
        Matteo
        Reply
  • Dr Richard Mason February 8th, 2020 2:34 pm
    Can someone please give some hints on how I might get started providing
    CitNetExplorer both with (1) data on publications and (2) with data on citation relations between publications. I am using Pubmed and I would like to work out how to export data to construct a publication file and a citation file. Is this possible? What do I need to do in order to get started?
    Reply
  • Dr Richard Mason February 6th, 2020 2:26 pm
    Hi, can you use data from Pubmed / Medline? If so, how should I export it?
    Thanks
    Richard
    Reply
    • Ludo Waltman February 8th, 2020 3:23 pm
      CitNetExplorer provides direct support for working with Web of Science data. The software unfortunately doesn't offer direct support for other data sources.
      Please note that PubMed doesn't include data on citation links between publications. Therefore PubMed cannot be used as a data source for analyzing citation networks.
      Reply
  • Dan Stull January 29th, 2020 10:37 am
    Your tool looks incredible. It looks like an incredibly useful tool to conduct an initial literature survey in support of a structured literature review. I am going to download and see if it might be helpful. Nice work. Brilliant, actually!!
    Reply
  • Negar December 25th, 2019 5:19 am
    Hi.i get some data from web of science but the citnetexplorer give me error. Error while reading web of science file.....file is not valid.heeeeelp me😰
    Reply
    • Ludo Waltman December 25th, 2019 12:01 pm
      Please see the information in the box 'Problems opening Web of Science files' on www.citnetexplorer.nl. If this doesn't help, then feel free to send your file to citnetexplorer@cwts.leidenuniv.nl. I will then try to take a closer look at your problem.
      Reply
      • Karl December 27th, 2019 12:08 pm
        Hi Ludo,
        Thank you for taking the time to reply to my query. I did look at the box you suggested. However, its not clear how I exclude early access files from my search? Sorry to ask what may be a really basic question - but really grateful for your help.
        Best wishes,
        Karl
        Reply
        • Ludo Waltman December 28th, 2019 12:24 pm
          In the Web of Science web interface, when you have performed a search, it is possible to apply filters to the search results. One possibility is to filter based on document type. By excluding the 'early access' document type, you can remove early access publications from your search results.
          Reply
          • Karl December 28th, 2019 1:42 pm
            Great Ludo - that worked!
            Thanks for your help and support - very much appreciated!
            Best wishes,
            Karl
            Reply
  • Karl December 22nd, 2019 1:21 pm
    Hi,
    I'm literally just getting started. I worked through the tutorial and all was fine. However, on trying to run my own example, I keep getting the following error message:
    "An unexpected error has occurred (java.lung.NullPointerException). The program will be terminated."
    Any ideas what I'm doing wrong?!
    Thanks in advance for your help!
    Karl
    Reply
    • Ludo Waltman December 25th, 2019 11:59 am
      Please see the information in the box 'Problems opening Web of Science files' on www.citnetexplorer.nl. Most likely this explains your problem. If it doesn't, then feel free to send your file to citnetexplorer@cwts.leidenuniv.nl. I will then try to take a closer look at your problem.
      Reply
  • Duncan Gibbons December 7th, 2019 1:27 pm
    Hi, loving the software so far. I am however coming into trouble trying to include referenced data of the works I've included in my analysis. Is there a way for the software to pull references in the articles and include them in the mapping analysis without me having to go into each article and extract these references and include them manually? Thanks
    Reply
    • Ludo Waltman December 8th, 2019 1:34 pm
      Assuming you are working with Web of Science data, this is indeed possible. When opening a citation network based on Web of Science data, you need to make sure that the checkbox 'Include non-matching cited references' is checked. You may also need to lower the value in the 'Minimum number of citations' text box.
      Reply
      • Duncan Gibbons December 8th, 2019 5:37 pm
        Thanks for the feedback.
        I tried it as you advised by still only have 80 nodes in the analysis (my web of science search returned 80 publications). Is there a way for including the cited references of these nodes in the analysis without having to manually create a combination of these references in a large text file? P.S. I did select the full record and cited references option when exporting the text file from web of science.
        Thanks
        Duncan
        Reply
        • Ludo Waltman December 8th, 2019 6:23 pm
          If you set the 'Minimum number of citations' text box to a value of 1, all your cited references should be included in the analysis. Let me know if this doesn't work.
          Reply
          • Duncan Gibbons December 8th, 2019 6:38 pm
            This text box is set to 1. Below is an attached screenshot of the settings I'm using
            https://imgur.com/Ep71nl9
            Thanks
            Reply
            • Ludo Waltman December 8th, 2019 6:45 pm
              Could you send me your Web of Science file (citnetexplorer@cwts.leidenuniv.nl)? I will then try to take a deeper look at your problem.
              Reply
              • Duncan Gibbons December 8th, 2019 6:53 pm
                Thanks, have forwarded it,
                Reply
  • Thereza Freire November 26th, 2019 3:32 am
    Hi!
    Thanks for developing this tool!
    I have met the same problem: "An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated".
    I had already excluded early accessed files, I tried to download CitNet again and reinstalled java 8, but the problem remains. I've just get open the app once, using my first search.
    Could you help me?
    Thanks a lot!
    Reply
    • Ludo Waltman November 26th, 2019 9:33 am
      When opening your files from Web of Science, could you uncheck the 'Non-matching cited references' checkbox to see if this solves the problem?
      Reply
      • Thereza Freire November 26th, 2019 11:55 am
        Good morning!
        I did, but it didn't solve. :-(
        Reply
        • Ludo Waltman November 26th, 2019 12:14 pm
          Could you then send your file to citnetexplorer@cwts.leidenuniv.nl? I will then take a look at your problem.
          Reply
  • Philippe Blanchard November 7th, 2019 12:02 pm
    I have found my mistake and could import citations from Web of science. Their formatting is too specific to be replicated with a reasonable amount of efforts, so I guess CitNetExplorer does not only "allow citation networks to be imported directly from the Web of Science database", but also *needs* it. Any idea about another software that does the same with self-cropped data?
    Thanks anyway for the hard work.
    Philippe
    Reply
    • Ludo Waltman November 23rd, 2019 4:38 pm
      It is easiest to work with Web of Science data. However, you can also use other data sources. The data then needs to be provided as input to CitNetExplorer in a publications file and a citations file. The difficulty is that you need to create these files yourself based on the data obtained from your data source. This requires some skills in data processing.
      I advise against trying to replicate the Web of Science file format. This is quite challenging.
      Reply
  • Nick Marko November 1st, 2019 9:28 am
    how can i find a specific research field with citnetexplorer? If i download all data from one person?
    Reply
    • Ludo Waltman November 23rd, 2019 4:31 pm
      CitNetExplorer does not provide any functionality for working with predefined research fields (e.g., the journal subject categories in Web of Science). The software does provide functionality for clustering the publications in a citation network. The different clusters of publications may correspond with different research areas or research fields.
      Reply
  • Lorenzo Cassini October 30th, 2019 8:56 pm
    Hello,
    Thanks for developing CitNetExplorer. I'm getting started with it and I find it very useful.
    I have and issue when importing data from Web of Science. I get this message: "An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated". I found that excluding one of the publications (I pasted the register in this comment), the issue was solved. I identified the problematic publication by trial and error.
    I've got this issue with other data, so it would be very helpful to know how to identify problematic publications. Thanks!
    Note: following other comments, I excluded Early Access publications, but the issue stills.
    J Polasik, M; Piotrowski, D Polasik, Michal; Piotrowski, Dariusz PAYMENT INNOVATIONS IN POLAND: THE ROLE OF PAYMENT SERVICES IN THE STRATEGIES OF COMMERCIAL BANKS EKONOMIA I PRAWO-ECONOMICS AND LAW English Article payment innovation; bank strategy; payment services; FinTech; payment card ADOPTION; CARDS This paper examines the significance of innovations in the area of payment services for strategies implemented by commercial banks in Poland. We propose a definition of payment innovations and present the evolution of their introduction in the Polish market, indicating the impact of legal regulations and the critical character of the new FinTech phenomenon. The analysis that we conducted was based on the results of a survey which obtained responses from 24 commercial banks representing almost the entire Polish retail banking sector based on the number of personal accounts maintained. The study helped to determine the main elements of the strategies implemented by banks in Poland. It also revealed the methods for competing in the area of payment services utilized by the banks, with innovative services as one of the leading elements. The results of the study indicated that there was a significant differentiation of applied strategies depending on a bank's size. In the case of larger banks, the main motivation for introducing payment innovations was characteristic of an offensive strategy, and for smaller banks - more often a defensive one. We also proposed a theoretical model for using the specific nature of payment innovations to build customer relationships and to apply cross-selling. [Polasik, Michal; Piotrowski, Dariusz] Nicolaus Copernicus Univ, Fac Econ Sci & Management, Dept Finance, Ul Gagarina 13A, PL-87100 Torun, Poland Polasik, M (reprint author), Nicolaus Copernicus Univ, Fac Econ Sci & Management, Dept Finance, Ul Gagarina 13A, PL-87100 Torun, Poland. michal.polasik@umk.pl; darius@econ.umk.pl Warsaw Institute of Banking; ALTERUM Grant [WIB/2014/01]; ALTERUM The article was funded by The Warsaw Institute of Banking and ALTERUM Grant No. WIB/2014/01. We would like to thank Anna Iwona Piotrowska and Natalia Kumkowska, who served as investigators. Moreover, we would like to thank Lech Kuklinski, Ph.D. the director of ALTERUM and director Pawel Widawski Ph.D. and Radoslaw Kotkowski from the Polish Bank Association for their support in carrying out this research project. [Anonymous], 2013, PROGRAM ROZWOJU OBRO; Arango C, 2015, J BANK FINANC, V55, P130, DOI 10.1016/j.jbankfin.2015.02.005; Bender C. M., 2011, INTERECONOMICS REV E, V46; Bikker J. A., 2002, EC FINANCIAL MODELLI; Bolt W., 2007, REV NETW ECON, V6, DOI [10.2202/1446-9022.1129, DOI 10.2202/1446-9022.1129]; Borestam A., 2011, ECB OCCASIONAL PAPER, V131; Canals J., 1999, EUROPEAN MANAGEMENT, V17, DOI [10.1016/s0263--2373(99)00047-x, DOI 10.1016/S0263--2373(99)00047-X]; Chakravorti S, 20031B2003 FED RES B; Chakravorti S, 2010, REV NETW ECON, V9; Church J, 2008, REV NETW ECON, V7, P337; Clark J. A, 1988, FEDERAL RESERVE BANK; Committee on Payment and Settlement Systems, 2012, INN RET PAYM; Dapp T., 2014, FINTECH DIGITAL R EV; Delis MD, 2010, OMEGA-INT J MANAGE S, V38, P268, DOI 10.1016/j.omega.2008.09.002; Deloitte, 2016, PAYM DISR EM CHALL E; DeYoung R., 2004, EC PERSPECTIVES, V28; DeYoung R., 2001, FEDERAL RESERVE BANK, VWP-01-06/2001, DOI [10.2139/ssrn.282721, DOI 10.2139/SSRN.282721]; Doligalski T., 2014, MODELE BIZNESU INTER; European Payments Council, 2009, EPC06606; Frazer P, 1985, PLASTIC ELECT MONEY; Gikas G., 1999, BANK KREDYT, V31; Gorka J., 2013, EFEKTYWNOSC INSTRUME, DOI [10.7172/978-83-63962-30-2, DOI 10.7172/978-83-63962-30-2]; Gorka J, 2014, P 2014 INT CASH C DE; Gostomski E, 2010, WSPOLCZESNA BANKOWOS; Gowrisankaran G, 2004, RAND J ECON, V35, P260, DOI 10.2307/1593691; Grzegorczyk T, 1997, STRATEGIE MARKETINGO; Grzywacz J, 2006, MARKETING DZIALALNOS; Hansen G, 2016, INNOWACJE BANKACH SA; Harasim J, 2013, J INNOVATION MANAGEM, V1; Harasim J, 2004, STRATEGIE MARKETINGO; Harasim J., 2011, EUROPEJSKI RYNEK PLA; Hernando I, 2007, J BANK FINANC, V31, P1083, DOI 10.1016/j.jbankfin.2006.10.011; Iwanczuk-Kaliska A, 2015, PROBL ZARZ, V13, P41, DOI 10.7172/1644-9584.54.3; Iwanicz-Drozdowska M., 2010, BANKOWOSC ZAGADNIENI; Kasiewicz S., 2013, SEKTOR BANKOWY MOTOR; Kasiewicz S, 2010, POLSKI SEKTOR BANKOW; Khiaonarong T, 2009, BANKING INNOVATION M, DOI [10.1007/978-3-7908-2333-2, DOI 10.1007/978-3-7908-2333-2]; Kisiel M, 2005, INTERNET KONKURENCYJ; Korenik D, 2002, KONKURENCYJNOSC KONK; Korenik D., 2006, INNOWACYJNE USLUGI B; Krupski R, 2009, KONCEPCJE STRATEGII; L'Hostis A, 2015, 2015 GLOBAL MOBILE B; Marcinkowska M, 2012, ACTA U LODZIENSIS FO; Marzec J., 2013, BANK KREDYT, V44; Matloka M, 2016, BANKI MOGA ZARABIAC; Mersch Yves, 2015, COMMUNICATION; Narodowy Bank Polski, 2012, PROGR RED OPL KART P; OECD/Eurostat, 2005, OSL MAN GUID COLL IN; Panowicz M., 2015, WYZWANIA BANKOWOSCI; Pawlowicz L, 2015, 602015 BAZ BANK; Pawlowska M, 2004, BANK KREDYT, V35; Payments Council European, 2009, EPC36208; Piotrowicz W, 2015, J GLOB INF TECH MAN, V18, P77, DOI 10.1080/1097198X.2015.1052684; Plooij M., 4712015 DNB, DOI [10.2139/ssrn.2602219, DOI 10.2139/SSRN.2602219]; Polasik M., 2012, INT J BANK ACCOUNT F, V4, P203, DOI DOI 10.1504/IJBAAF.2012.051590; Polasik M., 2012, 2652012 NBP; Polasik M, 2009, 2412009 NBP; Polasik M., 2016, ROZWOJ PRZEZ INNOWAC; Polasik M., 2007, BANKOWOSC ELEKTRONIC; Polasik M, 2013, INTEGRACJA EUROPEJSK; Polasik M, 2016, EKON PRAWO, V15, P103, DOI 10.12775/EiP.2016.007; Polasik M, 2015, PROBL ZARZ, V13, P102, DOI 10.7172/1644-9584.54.7; Polasik M, 2013, LECT NOTES BUS INF P, V141, P306, DOI 10.1007/978-3-642-40654-6_19; Polasik M, 2009, INT J BANK MARK, V27, P32, DOI 10.1108/02652320910928227; Rambure D., 2008, PAYMENT SYSTEMS SALT; Rochet J. C., 2006, REV NETW ECON, V5, P1, DOI DOI 10.2202/1446-9022.1085; Rochet JC, 2011, J EUR ECON ASSOC, V9, P462, DOI 10.1111/j.1542-4774.2011.01020.x; Rogers E.M., 1983, DIFFUSION INNOVATION; Rokita J., 2005, ZARZADZANIE STRATEGI; Shaw R., 2001, BANK STRATEGIES CHAL; Simon-Kucher & Partners, 2016, GLOB PRIC STUD 2014; Sokolowska E, 2015, ELECTRON COMMER R A, V14, P292, DOI 10.1016/j.elerap.2015.07.005; Spath D., 2012, EUROPEAN TREND SURVE; Stango Victor, 2004, REV NETW ECON, V3, P1, DOI DOI 10.2202/1446-9022.1040; Tunay KB, 2015, WORLD CONFERENCE ON TECHNOLOGY, INNOVATION AND ENTREPRENEURSHIP, P363, DOI 10.1016/j.sbspro.2015.06.335; Ward M., 2006, Information Security Technical Report, V11, P89, DOI 10.1016/j.istr.2006.03.001; Weclawski J., 2015, ANN UMCS SECTIO H OE, VXLIX; Wrzosek W., 2012, STRATEGIE MARKETINGO 78 2 2 3 3 UNIWERSYTET MIKOLAJA KOPERNIKA-NICOLAUS COPERNICUS UNIV TORUN WYDZIAL NAUK EKONOMICZNYCH & ZARZADZANIA, KATEDRA EKON, UL GAGARINA 13A, TORUN, 87-100, POLAND 1898-2255 2392-1625 EKON PRAWO Ekon. Prawo MAR 2016 15 1 73 101 10.12775/EiP.2016.006 29 Economics Business & Economics VH4DS WOS:000453148800006 DOAJ Gold 30/10/2019
    Reply
  • Lorenzo Cassini October 30th, 2019 8:48 pm
    Hello,
    Thanks for developing CitNetExplorer. I'm getting started with it and I find it very useful.
    I have and issue when importing data from Web of Science. I get this message: "An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated". I found that excluding one of the publications (I pasted the register in this comment), the issue was solved. I identified the problematic publication by trial and error.
    I've got this issue with other data, so it would be very helpful to know how to identify problematic publications. Thanks!
    Note: following other comments, I excluded Early Access publications, but the issue stills.
    J Polasik, M; Piotrowski, D Polasik, Michal; Piotrowski, Dariusz PAYMENT INNOVATIONS IN POLAND: THE ROLE OF PAYMENT SERVICES IN THE STRATEGIES OF COMMERCIAL BANKS EKONOMIA I PRAWO-ECONOMICS AND LAW English Article payment innovation; bank strategy; payment services; FinTech; payment card ADOPTION; CARDS This paper examines the significance of innovations in the area of payment services for strategies implemented by commercial banks in Poland. We propose a definition of payment innovations and present the evolution of their introduction in the Polish market, indicating the impact of legal regulations and the critical character of the new FinTech phenomenon. The analysis that we conducted was based on the results of a survey which obtained responses from 24 commercial banks representing almost the entire Polish retail banking sector based on the number of personal accounts maintained. The study helped to determine the main elements of the strategies implemented by banks in Poland. It also revealed the methods for competing in the area of payment services utilized by the banks, with innovative services as one of the leading elements. The results of the study indicated that there was a significant differentiation of applied strategies depending on a bank's size. In the case of larger banks, the main motivation for introducing payment innovations was characteristic of an offensive strategy, and for smaller banks - more often a defensive one. We also proposed a theoretical model for using the specific nature of payment innovations to build customer relationships and to apply cross-selling. [Polasik, Michal; Piotrowski, Dariusz] Nicolaus Copernicus Univ, Fac Econ Sci & Management, Dept Finance, Ul Gagarina 13A, PL-87100 Torun, Poland Polasik, M (reprint author), Nicolaus Copernicus Univ, Fac Econ Sci & Management, Dept Finance, Ul Gagarina 13A, PL-87100 Torun, Poland. michal.polasik@umk.pl; darius@econ.umk.pl Warsaw Institute of Banking; ALTERUM Grant [WIB/2014/01]; ALTERUM The article was funded by The Warsaw Institute of Banking and ALTERUM Grant No. WIB/2014/01. We would like to thank Anna Iwona Piotrowska and Natalia Kumkowska, who served as investigators. Moreover, we would like to thank Lech Kuklinski, Ph.D. the director of ALTERUM and director Pawel Widawski Ph.D. and Radoslaw Kotkowski from the Polish Bank Association for their support in carrying out this research project. [Anonymous], 2013, PROGRAM ROZWOJU OBRO; Arango C, 2015, J BANK FINANC, V55, P130, DOI 10.1016/j.jbankfin.2015.02.005; Bender C. M., 2011, INTERECONOMICS REV E, V46; Bikker J. A., 2002, EC FINANCIAL MODELLI; Bolt W., 2007, REV NETW ECON, V6, DOI [10.2202/1446-9022.1129, DOI 10.2202/1446-9022.1129]; Borestam A., 2011, ECB OCCASIONAL PAPER, V131; Canals J., 1999, EUROPEAN MANAGEMENT, V17, DOI [10.1016/s0263--2373(99)00047-x, DOI 10.1016/S0263--2373(99)00047-X]; Chakravorti S, 20031B2003 FED RES B; Chakravorti S, 2010, REV NETW ECON, V9; Church J, 2008, REV NETW ECON, V7, P337; Clark J. A, 1988, FEDERAL RESERVE BANK; Committee on Payment and Settlement Systems, 2012, INN RET PAYM; Dapp T., 2014, FINTECH DIGITAL R EV; Delis MD, 2010, OMEGA-INT J MANAGE S, V38, P268, DOI 10.1016/j.omega.2008.09.002; Deloitte, 2016, PAYM DISR EM CHALL E; DeYoung R., 2004, EC PERSPECTIVES, V28; DeYoung R., 2001, FEDERAL RESERVE BANK, VWP-01-06/2001, DOI [10.2139/ssrn.282721, DOI 10.2139/SSRN.282721]; Doligalski T., 2014, MODELE BIZNESU INTER; European Payments Council, 2009, EPC06606; Frazer P, 1985, PLASTIC ELECT MONEY; Gikas G., 1999, BANK KREDYT, V31; Gorka J., 2013, EFEKTYWNOSC INSTRUME, DOI [10.7172/978-83-63962-30-2, DOI 10.7172/978-83-63962-30-2]; Gorka J, 2014, P 2014 INT CASH C DE; Gostomski E, 2010, WSPOLCZESNA BANKOWOS; Gowrisankaran G, 2004, RAND J ECON, V35, P260, DOI 10.2307/1593691; Grzegorczyk T, 1997, STRATEGIE MARKETINGO; Grzywacz J, 2006, MARKETING DZIALALNOS; Hansen G, 2016, INNOWACJE BANKACH SA; Harasim J, 2013, J INNOVATION MANAGEM, V1; Harasim J, 2004, STRATEGIE MARKETINGO; Harasim J., 2011, EUROPEJSKI RYNEK PLA; Hernando I, 2007, J BANK FINANC, V31, P1083, DOI 10.1016/j.jbankfin.2006.10.011; Iwanczuk-Kaliska A, 2015, PROBL ZARZ, V13, P41, DOI 10.7172/1644-9584.54.3; Iwanicz-Drozdowska M., 2010, BANKOWOSC ZAGADNIENI; Kasiewicz S., 2013, SEKTOR BANKOWY MOTOR; Kasiewicz S, 2010, POLSKI SEKTOR BANKOW; Khiaonarong T, 2009, BANKING INNOVATION M, DOI [10.1007/978-3-7908-2333-2, DOI 10.1007/978-3-7908-2333-2]; Kisiel M, 2005, INTERNET KONKURENCYJ; Korenik D, 2002, KONKURENCYJNOSC KONK; Korenik D., 2006, INNOWACYJNE USLUGI B; Krupski R, 2009, KONCEPCJE STRATEGII; L'Hostis A, 2015, 2015 GLOBAL MOBILE B; Marcinkowska M, 2012, ACTA U LODZIENSIS FO; Marzec J., 2013, BANK KREDYT, V44; Matloka M, 2016, BANKI MOGA ZARABIAC; Mersch Yves, 2015, COMMUNICATION; Narodowy Bank Polski, 2012, PROGR RED OPL KART P; OECD/Eurostat, 2005, OSL MAN GUID COLL IN; Panowicz M., 2015, WYZWANIA BANKOWOSCI; Pawlowicz L, 2015, 602015 BAZ BANK; Pawlowska M, 2004, BANK KREDYT, V35; Payments Council European, 2009, EPC36208; Piotrowicz W, 2015, J GLOB INF TECH MAN, V18, P77, DOI 10.1080/1097198X.2015.1052684; Plooij M., 4712015 DNB, DOI [10.2139/ssrn.2602219, DOI 10.2139/SSRN.2602219]; Polasik M., 2012, INT J BANK ACCOUNT F, V4, P203, DOI DOI 10.1504/IJBAAF.2012.051590; Polasik M., 2012, 2652012 NBP; Polasik M, 2009, 2412009 NBP; Polasik M., 2016, ROZWOJ PRZEZ INNOWAC; Polasik M., 2007, BANKOWOSC ELEKTRONIC; Polasik M, 2013, INTEGRACJA EUROPEJSK; Polasik M, 2016, EKON PRAWO, V15, P103, DOI 10.12775/EiP.2016.007; Polasik M, 2015, PROBL ZARZ, V13, P102, DOI 10.7172/1644-9584.54.7; Polasik M, 2013, LECT NOTES BUS INF P, V141, P306, DOI 10.1007/978-3-642-40654-6_19; Polasik M, 2009, INT J BANK MARK, V27, P32, DOI 10.1108/02652320910928227; Rambure D., 2008, PAYMENT SYSTEMS SALT; Rochet J. C., 2006, REV NETW ECON, V5, P1, DOI DOI 10.2202/1446-9022.1085; Rochet JC, 2011, J EUR ECON ASSOC, V9, P462, DOI 10.1111/j.1542-4774.2011.01020.x; Rogers E.M., 1983, DIFFUSION INNOVATION; Rokita J., 2005, ZARZADZANIE STRATEGI; Shaw R., 2001, BANK STRATEGIES CHAL; Simon-Kucher & Partners, 2016, GLOB PRIC STUD 2014; Sokolowska E, 2015, ELECTRON COMMER R A, V14, P292, DOI 10.1016/j.elerap.2015.07.005; Spath D., 2012, EUROPEAN TREND SURVE; Stango Victor, 2004, REV NETW ECON, V3, P1, DOI DOI 10.2202/1446-9022.1040; Tunay KB, 2015, WORLD CONFERENCE ON TECHNOLOGY, INNOVATION AND ENTREPRENEURSHIP, P363, DOI 10.1016/j.sbspro.2015.06.335; Ward M., 2006, Information Security Technical Report, V11, P89, DOI 10.1016/j.istr.2006.03.001; Weclawski J., 2015, ANN UMCS SECTIO H OE, VXLIX; Wrzosek W., 2012, STRATEGIE MARKETINGO 78 2 2 3 3 UNIWERSYTET MIKOLAJA KOPERNIKA-NICOLAUS COPERNICUS UNIV TORUN WYDZIAL NAUK EKONOMICZNYCH & ZARZADZANIA, KATEDRA EKON, UL GAGARINA 13A, TORUN, 87-100, POLAND 1898-2255 2392-1625 EKON PRAWO Ekon. Prawo MAR 2016 15 1 73 101 10.12775/EiP.2016.006 29 Economics Business & Economics VH4DS WOS:000453148800006 DOAJ Gold 30/10/2019
    Reply
  • burcu umut zan October 24th, 2019 1:42 pm
    Hello,
    I used to make maps via cit net explorer. after a long time this week I tried to use it but ı took a notification like this: "can not find DOI number...". After taking this notification, I read the getting started tutorial again. I got the same data set from wos. I made all the steps as in the tutorial. but again I got the same message "can not find DOI number...".Please let me know how I can solve it.
    Thanks
    Burcu
    Reply
  • Frank Löffler October 18th, 2019 11:40 am
    Running the current version on Debian 9.11 I get an exception:
    $ java -jar CitNetExplorer.jar
    Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at org.pushingpixels.substance.internal.utils.SubstanceColorUtilities.getDefaultBackgroundColor(SubstanceColorUtilities.java:758)
    This is using
    $ java --version
    openjdk 11.0.4 2019-07-16
    OpenJDK Runtime Environment (build 11.0.4+11-post-Debian-1bpo91)
    OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Debian-1bpo91, mixed mode, sharing)
    The problem sounds similar to https://github.com/Insubstantial/insubstantial/issues/56#issuecomment-333986024 where it is attributed to a bug in Substance, which I see is included in your jar.
    The full log is attached:
    $ java -jar CitNetExplorer.jar
    Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at org.pushingpixels.substance.internal.utils.SubstanceColorUtilities.getDefaultBackgroundColor(SubstanceColorUtilities.java:758)
    at org.pushingpixels.substance.internal.utils.SubstanceColorUtilities.getBackgroundFillColor(SubstanceColorUtilities.java:661)
    at org.pushingpixels.substance.internal.ui.SubstancePanelUI.__org__pushingpixels__substance__internal__ui__SubstancePanelUI__installDefaults(SubstancePanelUI.java:73)
    at org.pushingpixels.substance.internal.ui.SubstancePanelUI.installDefaults(SubstancePanelUI.java)
    at java.desktop/javax.swing.plaf.basic.BasicPanelUI.installUI(BasicPanelUI.java:62)
    at org.pushingpixels.substance.internal.ui.SubstancePanelUI.__org__pushingpixels__substance__internal__ui__SubstancePanelUI__installUI(SubstancePanelUI.java)
    at org.pushingpixels.substance.internal.ui.SubstancePanelUI.installUI(SubstancePanelUI.java)
    at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
    at java.desktop/javax.swing.JPanel.setUI(JPanel.java:150)
    at java.desktop/javax.swing.JPanel.updateUI(JPanel.java:126)
    at java.desktop/javax.swing.JPanel.(JPanel.java:86)
    at java.desktop/javax.swing.JPanel.(JPanel.java:109)
    at java.desktop/javax.swing.JPanel.(JPanel.java:117)
    at java.desktop/javax.swing.JRootPane.createGlassPane(JRootPane.java:521)
    at java.desktop/javax.swing.JRootPane.(JRootPane.java:348)
    at java.desktop/javax.swing.JFrame.createRootPane(JFrame.java:279)
    at java.desktop/javax.swing.JFrame.frameInit(JFrame.java:258)
    at java.desktop/javax.swing.JFrame.(JFrame.java:181)
    at nl.citnetexplorer.app.CitNetExplorer.(Unknown Source)
    at nl.citnetexplorer.app.CitNetExplorer$1.run(Unknown Source)
    at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
    at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
    Reply
    • Ludo Waltman October 21st, 2019 9:09 am
      CitNetExplorer currently requires version 8 of Java. Unfortunately, it doesn't work with more recent versions of Java. Most likely this explains your problem. My recommendation is to run CitNetExplorer using Java version 8.
      Reply
  • Mahsa Samsami September 28th, 2019 8:35 am
    Hi
    I appreciate for developing this software firstly.
    I have a problem importing data. I have received a message that was related to An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated". Please let me know how I can solve it.
    Thanks
    Reply
    • Ludo Waltman September 28th, 2019 10:30 am
      Most likely this is due to so-called early access publications. Please take a look at the earlier posts on this issue.
      Reply
  • Syed A. Raza July 3rd, 2019 8:20 am
    Hello,
    Is there way, we can other formats besides web of science into citenetexplorer software?
    1. How to use SCOPUS data file into software.
    2. Guidelines to use Pakej file is also not very clear
    Can you please address these issues?
    Reply
    • Ludo Waltman July 5th, 2019 10:35 pm
      At the moment, CitNetExplorer does not support Scopus files and Pajek files. I am afraid we currently do not have the resources to update CitNetExplorer to provide support for these file types. Hopefully at some point in the future such an update can be made.
      Reply
  • Alexandre de Araujo June 28th, 2019 8:20 pm
    Hi,
    I'm starting to work with it and Web of Science data, but it only works with one file. I have around 730 publications, so I downloaded 2.txt files. When I upload them into the CitNetExplorer I got this error: "An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated" and then it closes.
    Thanks!
    Reply
    • Ludo Waltman June 30th, 2019 8:10 am
      This probably relates to the issue of early access publications discussed below (see my response to the question of Fernando Alguacil). My recommendation is to exclude early access publications from the data that you download from Web of Science. If this doesn't solve your problem, then feel free to send your files to citnetexplorer@cwts.leidenuniv.nl. I will then take a closer look at your problem.
      Reply
      • Alexandre de Araujo June 30th, 2019 4:48 pm
        Thanks! The problem was this.
        Reply
  • Fernando Alguacil June 11th, 2019 12:06 pm
    Hi
    As the previous message I have the same problem to import a merge file of five export files from WoS. How could I resolve the problem.
    Thank in advance
    Fernando.
    Reply
    • Ludo Waltman June 12th, 2019 7:48 am
      There is a new feature in Web of Science, so-called early access publications. If your data includes such early access publications, CitNetExplorer will not be able to process the data and will give an error message. This probably explains your problem. My recommendation is to exclude early access publications from the data that you download from Web of Science.
      Reply
      • Alexandre de Araújo June 30th, 2019 4:38 pm
        Thanks! The problem was this same.
        Reply
  • Laura Marin-Restrepo May 28th, 2019 10:14 pm
    Hi,
    Thank you for this software, it is very useful!
    I'm starting to work with it and Web of Science data, but it only works with one file. I have around 2300 publications, so I downloaded 5 .txt files. When I upload them into the CitNetExplorer I got this error: "An unexpected error has occurred (java.lang.NullPointerException). The program will be terminated" and then it closes.
    I really appreciate your help.
    Thanks!
    Reply
    • Ludo Waltman May 29th, 2019 1:36 am
      Could you send your files to citnetexplorer@cwts.leidenuniv.nl? We'll then try to take a look at your problem.
      Reply
  • A Dien May 6th, 2019 8:07 pm
    Hi!
    Thank you for an excellent piece of software.
    Will it be possible in the future to upload one paper to the software, then view the 'family tree' of citations that it uses, for each generation?
    For example, if Paper A cites Papers B, C & D, the family tree would display connections from: A to B, C & D
    then connections from B to all of its cited papers x,y,z
    and connections from C to all of its cited papers i,u,j
    etc.
    Thank you kindly.
    Reply
    • Ludo Waltman May 6th, 2019 8:27 pm
      Yes, in the long term, we hope the software will evolve in such a direction. In the short term, however, I'm afraid we don't have the resources to work on this.
      Reply
  • Annie I May 4th, 2019 5:23 am
    Hi,
    I know I can convert Scopus files via CRExplorer and then bring them onto CitNetExplorer to use. But when I just go to CRExplorer and put my excel file, it says that there is an error in the analysis. My other excel files get this but not the one I need to use immediately for the project. Is there something about excel I am missing out on? I am saving the file as a CSV. Thank you.
    Reply
    • Ludo Waltman May 6th, 2019 7:46 pm
      Your question seems to be more about CRExplorer than about CitNetExplorer. I'm afraid I'm unable to answer your question.
      Reply
    • Matteo Belletti February 7th, 2020 11:53 am
      Hi Annie, you have simply to select all options regarding the information (citation information, bibliographical, abstract and keywords, funding details, other informations) before saving in CSV.
      matteo
      Reply
  • Ankit Sheoran April 23rd, 2019 11:32 am
    Is there any way to get the most relevant research paper from the network??
    Reply
  • Briana W February 14th, 2019 8:01 pm
    Hello, I'm trying to make a citation network for about 1700 files from one publication. I've downloaded them in 500-article batches from Web of Science and saved them as .txt files. I try to upload the first .txt file to CitNetExplorer but get an error that says my "file is not valid." What am I doing wrong? Thanks!
    Reply
    • Ludo Waltman February 15th, 2019 11:21 pm
      Could you send your first file to citnetexplorer@cwts.leidenuniv.nl? We will then take a look at your problem.
      Reply
  • Zoe Bultman November 30th, 2018 9:19 pm
    Hi,
    I'm trying to visually differentiate between publications based on their language of publication. Is there a feature to do this in CitNetExplorer that someone could direct me to? Otherwise I've been attempting to look at my data set in excel and manually select each publication that I know to be in a certain language, which is rather inefficient. Thanks in advance!
    Reply
    • Ludo Waltman November 30th, 2018 10:02 pm
      I am afraid that CitNetExplorer doesn't provide any support for identifying the language of a publication.
      Reply
      • Zoe Bultman November 30th, 2018 10:09 pm
        Okay, thanks for your help!
        Reply
        • Briana W February 16th, 2019 5:06 pm
          I have resolved the issue. Thanks for the reply!
          Reply
  • Matteo Belletti November 19th, 2018 10:12 am
    Hello! One more question: where can I find examples of "citation network patterns"? And, if is it possible, in specific reference to qualitative fields of investigation (e.g. citations patterns referring to the network made by all publication on a topic such as "social farming")
    many thanks in advance
    Matteo
    Reply
    • Ludo Waltman November 19th, 2018 5:35 pm
      I don't fully understand your question. What exactly do you mean by 'citation network patterns'? Perhaps the CitNetExplorer tool is more suitable for studying such patterns?
      Reply
      • Matteo Belletti November 20th, 2018 5:39 pm
        1) I apologize for my inaccuracy. I will try to explain it better:
        2) I am using (or at least I'm trying to use) CitNetExplorer!
        3) On your homepage there is written "analyzing CITATION PATTERNS in scientific literature".
        4) These are the patterns to which I refer.
        5) Is there any systematization (collection) of citation patterns?
        Matteo
        Reply
        • Ludo Waltman November 21st, 2018 12:24 am
          Thanks for the clarification! There is no systematic collection of citation patterns. 'Citation patterns' is used as a general term that refers to all kinds of structures in citation networks.
          Reply
          • Matteo Belletti November 21st, 2018 10:30 am
            I immagine it!
            ....but "hope is always the last to die" :)
            thanks Ludo!!
            matteo
            Reply
  • Matteo Belletti November 16th, 2018 12:21 pm
    Hallo Ludo nice to meet you!
    I tried to save a scopus data files as WOS by using crexplorer but I did not succeed.
    How to do it?
    kind regards!
    Matteo
    Reply
    • Ludo Waltman November 16th, 2018 8:31 pm
      I have very limited practical experience with CRExplorer, but I believe this can be done using the import and export features available in the 'File' menu.
      Reply
      • Matteo Belletti November 18th, 2018 6:32 pm
        ok, finally it works. The problem was at a scopus website level...if you do not include the necessary options before saving the file in the csv format this will not properly exported (and converted of course) into the wos format.
        thanks again
        matteo
        Reply
        • David January 24th, 2019 5:39 pm
          I have the same issue. Could please specify the "necessary options" of Scopus before saving the file in the csv format. Thanks
          Reply
          • Mansi Maheshwari July 20th, 2019 6:54 pm
            What are these features that we need to take care of
            Reply
          • Matteo Belletti February 7th, 2020 11:46 am
            Hi David, you have to select all the options.
            matteo
            Reply
  • Lesley Skalla November 9th, 2018 6:38 pm
    Hello,
    I would like to create a publication map for an initial technique paper and show its subsequent citations. I think CitNetExplorer should be able to show this over time. If so, do I import the one publication of interest from WOS with a full record and cited references? I have tried this but only see the one publication and none of its citing papers. Also, what type of network map would be the most appropriate to create in VOSViewer to show the citation impact of one key publication? Thank you!
    Lesley
    Reply
    • Ludo Waltman November 10th, 2018 5:09 pm
      You need to download data from Web of Science not only for your publication of interest but also for all publications citing this publication. VOSviewer is less suitable for showing the citation impact of one specific publication. Like CitNetExplorer, VOSviewer can be used to visualize citation networks of publications. However, the visualizations provided by CitNetExplorer will probably be more useful than the ones provided by VOSviewer.
      Reply
  • Viviana D'Angelo September 11th, 2018 2:38 pm
    Hello! I need to use a thesaurus file in my CitNet analysis since I have some duplication of the same authors, is it possible like in VosViewer? Thank you in advance
    Reply
    • Ludo Waltman September 11th, 2018 7:01 pm
      No, in CitNetExplorer there is no support for thesaurus files. Individual publications, not authors, are the unit of analysis in CitNetExplorer. Therefore I don't think there is a strong need for thesaurus files in CitNetExplorer.
      Reply
  • Alessandro Fergnani September 4th, 2018 5:41 am
    Many thanks for the great work!!! Quick question: is it possible to visualize more than 40 documents at once in the network?
    thanks in advance!
    Reply
    • Ludo Waltman September 4th, 2018 6:42 am
      Yes, up to 100 publications can be visualized. Use the 'Update publications' button to increase the number of publications in the visualization.
      Reply
  • anunciano August 20th, 2018 2:59 pm
    thx
    Reply
  • Khrystyna Holynska June 14th, 2018 2:16 pm
    I can't get the software to work... I get an error with the following text "Error while reading Web of Science files (my path). Cannot find author (AU) field. I checked with random files (not with the whole bunch at ones) - didn't help. Thank you in advance!
    Reply
    • Ludo Waltman June 14th, 2018 8:40 pm
      Could you please send one of your files to citnetexplorer@cwts.leidenuniv.nl? I will then take a look at your problem.
      Reply
  • Daniel O. April 24th, 2018 1:01 am
    I am having trouble analyzing a large number of citations. The software churns for a while, and eventually gives an error: "Out of memory, the program will be terminated". However, my system has plenty of spare memory available, but CitNetExplorer only consumes 1.1 GB before running into issues. This is on a Win64 system.
    Reply
    • Ludo Waltman April 26th, 2018 10:12 am
      It might be that this problem is due to the use of a 32-bit version of Java. Make sure you are using a 64-bit version of Java. If this doesn't solve the problem, then please let me know.
      Reply
      • Daniel O. April 30th, 2018 9:35 pm
        Thanks, that solved the problem!
        Reply
  • Isabel Carvalho February 1st, 2018 10:41 pm
    Hello Dear All
    Can you help me with assistance to overcome an error that appears whenever I try to use "screenshot" to "save a map" in any of the available formats (.pdf, .png,..)?
    It says "An unexpected error occurred (java.lang.UnsatisfiedLinkError: sun.awt.X11GraphicsEnvironment.initDisplay(Z)V). The program will be terminated."
    It is very frustating because I loss all the adjustments that allow the perfect map to include in the paper. I am using VOSviewer as well and it works perfectly. So, what could be my problem with CitNet?
    Can you help, please? Thanks.
    Reply
    • Ludo Waltman February 3rd, 2018 12:45 pm
      I assume you are working on a Mac? This is a known issue when CitNetExplorer is used on Mac systems. Unfortunately, I don't have an easy solution. My recommendation is to use a Windows system to make screenshots. In the future, we hope to fix the problem, so that screenshots can also be made on Mac systems.
      Reply
      • Isabel Carvalho February 24th, 2018 3:11 pm
        Thanks, dear Ludo.
        I am so happy that this is not a rookie problem. For the moment I will continue to work with "Grab" capture while I wait for a fix. I think that´s worth in improving a solution for Mac because there are many users.
        I like very much both CitNetExplorer and VosViewer, they are amazing, user-friendly tools that everybody can use without being an expert in scientometrics. You´ve done an amazing work!
        Reply
        • Roberto Lalli October 25th, 2019 10:04 am
          Hello all,
          I am a MAC user and wanted to know if there is now a way to overcome this problem because I cannot save the result of my research with CitNetExplorer
          Thank you very much!
          Roberto
          Reply
  • Amin Firoozabadi December 5th, 2017 4:14 pm
    Dear Dr. Waltman,
    I have been using both of your software for some time and they are fascinating. However, it seems that I get different result in clustering in the two software. I found that "Use external Citation Score" seems not functioning for me. When I choose external citation score, the citation score for all articles goes to Zero. I am using the software from University (Radboud). Do have any suggestion for that?
    Reply
    • Ludo Waltman December 5th, 2017 4:23 pm
      You are completely right. Due to a bug in the software, the external citation scores don't work properly. It's best not to use this option. I hope you will find CitNetExplorer useful even without being able to use the external citation scores. Of course, when the software is updated, we will fix the bug.
      Reply
  • Immo Stahl November 11th, 2017 2:18 am
    is there a way to export Data from google scholar and import it into CitnetExplorer as well?
    Reply
    • Ludo Waltman November 11th, 2017 9:16 am
      Unfortunately, this is not possible. Google Scholar doesn't provide functionality for downloading citation data.
      Reply
      • Immo Stahl November 11th, 2017 7:05 pm
        So I am on my way for a solution, but I am not there yet. I have downloaded the software "publish or perish" and exportet Google scholar results via this software and saved them in the "wos" format. However, for some reason CitNetExplorer is showing the nodes but no connections between them... If I'll figure it out, i let you guys know.
        Reply
        • Ludo Waltman November 13th, 2017 9:39 am
          The difficulty is that Publish or Perish doesn't enable you to extract citation links between publications from Google Scholar. This is why CitNetExplorer shows publications, but no citation links between the publications.
          Reply
  • Emily October 12th, 2017 2:42 pm
    Hello,
    I'm trying to use the CitNetExplorer view instead of the Web of Science view when importing citations. I'm attempting to import the citations as a .txt file in the "Citations File" field, but I'm not sure what the "Publications" file is. What are the parameters for the "Publications File"? Is this something I have to download?
    Thanks!
    Reply
    • Ludo Waltman October 12th, 2017 8:23 pm
      My suggestion is to first open a Web of Science file in CitNetExplorer and to then save the resulting citation network in a publications and a citations file. The resulting publications and citations files can be used to get a better understanding of the information that is stored in these two files. When you understand this, you may be able to create your own publications and citations files.
      Reply
  • Alamsyah Alamsyah August 14th, 2017 9:51 pm
    Dear CNE,
    Thank you very much to launch CitNetExplorer. I have one question for you: I do not have access to Web of Science, but I have access to SCOPUS. Would you tell me how to import bibliography from SCOPUS to CitNetExplorer. May I import .RIS file?
    Thank you very much.
    Reply
    • Ludo Waltman August 14th, 2017 10:33 pm
      Please see my earlier response to a similar question asked by Gaurav Maheshwari.
      Reply
  • Subhadarsini Parida July 29th, 2017 5:25 am
    Hi,
    If I have a list of PDFs of journal articles. How can I conduct a co citation analysis using CitNEtExplorer?
    Reply
    • Ludo Waltman July 30th, 2017 7:38 am
      I am afraid this will be very difficult. First of all, CitNetExplorer doesn’t perform co-citation analyses. (Instead, the VOSviewer software tool could be used for such analyses.) CitNetExplorer performs only direct citation analyses. Perhaps more importantly, processing PDF files is highly challenging and CitNetExplorer doesn’t offer any support for this. (The same applies to VOSviewer.) You need to take care yourself of converting your PDF files into text files, extracting the reference strings from the text files, and identifying the citation links between documents based on the reference strings. The data obtained in this way can then be provided as input to CitNetExplorer using so-called publication and citation files. However, it is clear that this is a highly challenging process that takes a lot of effort, so I can understand that this might not be what you have in mind.
      Reply
  • Hanh La May 1st, 2017 12:12 pm
    * Are networks constructed by CitNetExplorer based on DOI?
    If a publication that does not have a DOI, does it appear in network visualisation?
    * Does CitNetExplorer work well with 64 bit Windows system? What is the minimum requirement for RAM? I tried to visualize a network of more or less 100,000 publications in Windows 10, but failed. The error is either "Out of memory" or "File is empty". Could you help? Thank you!
    Reply
    • Ludo Waltman May 4th, 2017 8:28 am
      No, networks are not constructed (exclusively) based on DOI. Other data elements are taken into account as well. For more information, please see Section 4.1 in the following paper: https://doi.org/10.1016/j.joi.2014.07.006 (http://arxiv.org/abs/1404.5322).
      CitNetExplorer should work well on 64 bit Windows systems. There is no clear minimum amount of memory that is required by the software. The larger the amount of memory you have available, the larger the data sets that can be handled by the software. The 'file is empty' error message probably is caused by the problem discussed below in my response to the question of Alderasus.
      Reply
  • Alderasus May 1st, 2017 3:30 am
    Dear CitNetExplorer team,
    First of all, I hope that everyone is fine and many thanks for your appreciated efforts.
    I am trying to use CitNetExplorer, however, every time I try to upload text file of the citations by following your instructions I got an error that said: Error while reading web of science file 'path': File is empty. Could you please help me with such issue? Thank you in advance.
    Best wishes,
    Alderasus
    Reply
    • Ludo Waltman May 4th, 2017 8:23 am
      Thanks for raising this issue. We have investigated it. There currently turns out to be a problem with the download feature of Web of Science. Because of this problem, files downloaded in the so-called tab-delimited file format cannot be opened by CitNetExplorer. They cause a 'file is empty' error message. We are in contact with Web of Science and they are trying to fix the problem. The problem should be fixed within the next one or two weeks. Most likely, this problem explains why you are getting an error message.
      A workaround is to use the so-called Web of Science plain text file format. This format can also be handled by CitNetExplorer and it doesn't suffer from the above problem.
      Reply
      • Ludo Waltman May 9th, 2017 9:20 pm
        The problem with the Web of Science file download has been fixed by Clarivate Analytics. Tab-delimited files downloaded from Web of Science now can be provided as input to CitNetExplorer without problems.
        Reply
        • Aleks S November 1st, 2017 2:54 am
          Dear Dr. Waltman,
          I tired today using both the delimited tab file and the plain txt file in Java version of the program. I am getting the same error. Is there a chance this error reappeared in Web of Science?
          Reply
          • Ludo Waltman November 1st, 2017 4:15 pm
            I just performed some tests. I don't believe the problem has reappeared in Web of Science, so I am not sure why you are getting an error. Please feel free to send me your files by e-mail. I will then try to take a look at them and to give you some advice.
            Reply
  • paola moscoso February 21st, 2017 12:38 pm
    Hello,
    Great free tool. One question, which is the minimum number of references needed for running the clustering option? I am trying with different options but it appears that due to minimum size requirement they can't be clustered. Do you have any additional tutorial or recommendation for managing other options that are not explaining in this tutorial (e.g. I am trying to find the option for connecting the lines between nodes, but I just don't find it!-as Ian below-).
    Many thanks,
    Paola
    Reply
  • Gaurav Maheshwari December 6th, 2016 8:21 am
    Hello!
    Does this support the data extract from Scopus database. Is there any way to use the Scopus data for citation analysis.
    Thanks
    Best regards
    Gaurav
    Reply
    • Ludo Waltman December 10th, 2016 4:21 pm
      Unfortunately, CitNetExplorer doesn't yet offer Scopus support. However, there is a workaround. You can use another tool, CRExplorer (available at www.crexplorer.net), to open your Scopus data files and to save them as Web of Science data files. The Web of Science data files that you have obtained in this way can be opened by CitNetExplorer. In this indirect way, CitNetExplorer can work with Scopus data.
      Reply
      • Matteo Belletti November 16th, 2018 11:58 am
        Hallo! I tried to save a scopus data files as was by using crexplorer but I did not succeed.
        How to do it?
        kind regards!
        Matteo
        Reply
        • Matteo Belletti November 16th, 2018 12:00 pm
          I apologize for the mistake: ....as WOS data file.....
          Matteo
          Reply
  • Ian October 20th, 2016 4:59 am
    Great program, the connecting lines between nodes seem to have disappeared on my visualization. I can't work out how to bring them back. Any advice much appreciated.
    Thanks
    Reply
  • Silvia Vicente August 29th, 2016 11:01 am
    Some references could be very old and do not right include (Annonymus). Could we introduce changes in the publication list to rename the reference?
    Reply
    • Ludo Waltman August 30th, 2016 11:08 pm
      Assuming that you are working with data downloaded from Web of Science, you could edit the Web of Science files using a text editor. In that way, you can make changes to the references. However, this is quite complex and this needs to be done in an extremely accurate way, otherwise CitNetExplorer will no longer be able to process the Web of Science files.
      Alternatively, after you have loaded a citation network in CitNetExplorer, you can save it using the 'Save' button. You will obtain two files, a publications file and a citations file. You can edit the publications file using a text editor (or using a spreadsheet program such as MS Excel) and you can then make changes to the data on individual publications.
      Reply
      • Silvia August 31st, 2016 12:31 am
        Thank you! I'm working with WOK - essential colection ok. Your solution concerns me because I fix several *.txt files (exportation is in groups of 5) and I have to do it by hand because in MsDos do not work for the initial headlines. The reference is old but I' ll try to do it because the year woukd be easy to find. Thanks!!
        Reply
  • Alex April 8th, 2016 7:27 am
    Hello! I enjoy the idea of the software presented here, but when I attempt to save my records of interest from Web of Science, I am unable to download reference information. The dropdown menu for Record Content is only "Author, Title, Source" and "Author, Title, Source, Abstract", and the "Full Record and Cited References" option has been evidently removed.
    What can I do to still use CitNetExplorer?
    Thanks for any insights!
    Alex
    Reply
    • George April 8th, 2016 10:52 am
      Dear Alex,
      I can still see these options on the web of science ISI. After selecting an article, click on Save to other file formats (dropdown bar on top of the article title) and then on the pop up window select Full record and cited references from Record Content and then tab delimited-Win on the file format for the extraction on a txt format.
      Hope that helps, George
      Reply
    • Nees Jan van Eck April 8th, 2016 1:24 pm
      Alex, most likely you are not using the Web of Science Core Collection. When you go to the online Web of Science, by default the ‘All Databases’ option is selected. You need to change this into ‘Web of Science Core Collection’. I expect that this will solve your problem.
      Reply
      • Nils Kvilvang May 1st, 2016 6:06 pm
        HI - I experienced the same problem. I do, however, think that it could also be dependent on what access your insitution have (?). I tried through two institutions, both have access to Web of Science. Through one of them, I had the same problem - there was no "Full record..." option. I struggled a lot with this, but when I tried accessing through the other institution, it was readily there. SO, I don't know if there are different services bought from the two institutions, but there was a difference...
        Reply
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