Staff

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Vita

2016, Dr. rer. soc., sociology, University Duisburg-Essen, advisor P. Stein;
2007, M.A., sociology, Columbia University, USA, advisor H. C. White;
2002, Dipl.-Ing. (FH), media technology, Mittweida University, advisor L. Hilmer.

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Service

Open Methodology: Developing tools in Computational Analytical Relational Sociology;
Capacity Building: Teaching Computational Social Science (interview).

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Research

Networks: Social formations are dualities of connectivity and culture;
Complexity: Social formations adapt to uncertainty at the edge of chaos;
Computation: Social formations leave traces as digital behavioral data.

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Publications

Publication

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Journal article

Lietz, Haiko. 2020. "Drawing impossible boundaries: Field delineation of Social Network Science." Scientometrics online first. doi: http://dx.doi.org/10.1007/s11192-020-03527-0.

Stier, Sebastian, Arnim Bleier, Haiko Lietz, and Markus Strohmaier. 2018. "Election Campaigning on Social Media: Politicians, Audiences and the Mediation of Political Communication on Facebook and Twitter." Political Communication 35 (1): 50-74. doi: http://dx.doi.org/10.1080/10584609.2017.1334728.

Jadidi, Mohsen, Fariba Karimi, Haiko Lietz, and Claudia Wagner. 2018. "Gender disparities in science?: Dropout, productivity, collaborations and success of male and female computer scientists." Advances in Complex Systems 21 (3-4): 1750011. doi: http://dx.doi.org/10.1142/S0219525917500114.

Lietz, Haiko, and Ronald Rousseau. 2013. "A mathematical relationship between growth and scaling in an exponentially growing bibliographic system." ISSI Newsletter 9 (4): 74-76. http://www.haikolietz.de/docs/mathematicalrelationship.pdf.

Lietz, Haiko. 2008. "Comment on Harrison C. White’s/2." Sociologica (2). doi: http://dx.doi.org/10.2383/27727.

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Contribution to edited volume

Lietz, Haiko. 2019. "Rezension von Padgett, John F./Powell, Walter W. (2012): The Emergence of Organizations and Markets. Princeton, NJ: Princeton University Press." In Schlüsselwerke der Netzwerkforschung, edited by Boris Holzer, and Christian Stegbauer, 449-452. Wiesbaden: Springer VS. doi: http://dx.doi.org/10.1007/978-3-658-21742-6_105.

Lietz, Haiko. 2019. "Rezension von Watts, Duncan J./Strogatz, Steven H. (1998). Collective Dynamics of 'Small-World' Networks. Nature 393, S. 440-442." In Schlüsselwerke der Netzwerkforschung, edited by Boris Holzer, and Christian Stegbauer, 551-553. Wiesbaden: Springer VS. doi: http://dx.doi.org/10.1007/978-3-658-21742-6_130.

Lietz, Haiko, Claudia Wagner, Arnim Bleier, and Markus Strohmaier. 2014. "When politicians talk: Assessing online conversational practices of political parties on Twitter." In Proceedings of the Eighth International AAAI Conference on Weblogs and Social Media (ICWSM 2014), edited by Eytan Adar, Paul Resnick, Munmun De Choudhury, Bernie Hogan, and Alice Oh, 285-294. Ann Arbor, MI: AAAI Press. http://www.aaai.org/ocs/index.php/ICWSM/ICWSM14/paper/view/8069/8129.

Riechert, Mathias, Daniel Sirtes, and Haiko Lietz. 2013. "Collaboration benefits and international visibility of two-country-collaborations." In Translational Twists and Turns: Science As A Socio-Economic Endeavor - Proceedings of the 18th International Conference on Science and Technology Indicators (STI 2013), edited by Sybille Hinze, and André Lottmann, 302-312. Berlin: iFQ. http://www.haikolietz.de/docs/collaborationbenefits.pdf.

Lietz, Haiko. 2013. "Diagnose von Emerging Science: Die Fälle "New Science of Networks" und Szientometrie." In Wissen - Wissenschaft - Organisation, edited by Heinz-Peter Ohly, Fortschritte der Wissensorganisation 12, 357-371. Würzburg: Ergon. http://www.haikolietz.de/docs/emergingscience.pdf.

Lietz, Haiko, and Mathias Riechert. 2013. "Science Dynamics: Normalized Growth Curves, Sharpe Ratios, and Scaling Exponents." In Proceedings of the 14th International Society of Scientometrics and Informetrics Conference (ISSI 2013), Vol. II, edited by Juan Gorraiz, Edgar Schiebel, Christian Gumpenberger, Marianne Hörlesberger, and Henk Moed, 1566-1577. Wien: Facultas. http://www.haikolietz.de/docs/sciencedynamics.pdf.

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Monograph

Lietz, Haiko. 2016. Scale-Free Identity: The Emergence of Social Network Science. Dissertation, University of Duisburg Essen, Faculty of Social Sciences.

Lietz, Haiko. 2008. White, Harrison C. 2008. Identity and Control: How Social Formations Emerge. Contributions to chapters 2 and 7. Princeton, NJ: Princeton University Press. http://press.princeton.edu/titles/8672.html.

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Working and discussion paper

Lietz, Haiko. 2007. Mit neuen Methoden zu neuen Aussagen: Semantische Netzwerkanalyse am Beispiel der Europäischen Verfassung. http://www.haikolietz.de/docs/verfassung.pdf.

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Daten/Software

Jadidi, Mohsen, Fariba Karimi, Claudia Wagner, and Haiko Lietz. 2017. Collaborations of computer scientists between 1970 and 2016. doi: http://dx.doi.org/10.7802/1520.

Lietz, Haiko. 2017. Social Network Science (1916-2012). doi: http://dx.doi.org/10.7802/1437.

Teaching

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Seminar

Bleier, Arnim, Fabian Flöck, Florian Lemmerich, and Haiko Lietz. 2018. "Big Data Module I: Introduction to Data Science with Python." GESIS - Leibniz-Institut für Sozialwissenschaften, Köln.

Flöck, Fabian, Christoph Kling, Florian Lemmerich, and Haiko Lietz. 2017. "Big Data Module I: Introduction to Data Science with Python." GESIS - Leibniz-Institut für Sozialwissenschaften, Köln.

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Sonstiges

Karimi, Fariba, Haiko Lietz, and Marcos Oliveira. 2019. "Big Data Module II: Introduction to Social Network Science with Python." GESIS - Leibniz-Institut für Sozialwissenschaften, Köln.

Talk

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Conference contribution

Lietz, Haiko, Marcos Oliveira, and Florian Lemmerich. 2019. "Emergence of order at scientific conferences." 4th European Conference on Social Networks, Eidgenössische Technische Hochschule Zürich, Mannheim, 11.09.2019.

Lietz, Haiko. 2019. "Field delineation of Social Network Science." Indo-German Workshop on Information Retrieval, Informetrics & Scientometrics, GESIS - Leibniz-Institut für Sozialwissenschaften, Köln, 12.06.2019.

Lietz, Haiko. 2019. "Modeling culture as a complex adaptive network." Dynamics of Interdependent Decisions, Hanse-Wissenschaftskolleg - Institute for Advanced Study, Delmenhorst, 25.06.2019.

Lietz, Haiko. 2019. "Scale-free networks are important." 12th Annual INAS Conference, Higher School of Economics, St. Petersburg, 02.06.2019.

Wagner, Claudia, Daniel Kostic, Haiko Lietz, and Mohsen Jadidi. 2019. "The predictability of success and dropouts in computer science." NetSci 2019, University of Vermont, Burlington, VT, 29.05.2019.

Lietz, Haiko. 2018. "Kulturelle Bedeutungsstrukturen in Netzwerken." Kultur, Stadt und Netzwerke, Tagung der Deutschen Gesellschaft für Netzwerkforschung, Darmstadt, 18.01.2018.

Liepelt, Klaus, Sebastian Leuoth, and Haiko Lietz. 2018. "White applied: Relationale Unterwegsforschung mit sehr kleinen Informationsbausteinen." Das Paradigma der Relationalität, Tagung der Deutschen Gesellschaft für Netzwerkforschung, Darmstadt, 03.12.2018.

Lietz, Haiko, Julian Kohne, and Claudia Wagner. 2018. "Zur Rolle der Netzwerkforschung in der Computational Social Science." Tagung der Sektion Soziologische Netzwerkforschung der Deutschen Gesellschaft für Soziologie, Oldenburg, 01.03.2018.

Jadidi, Mohsen, Fariba Karimi, Haiko Lietz, and Claudia Wagner. 2017. "Gender disparities in science?: Dropout, productivity, collaborations and success of male and female computer scientists." 1st European Symposium on Societal Challenges in Computational Social Science, London, 17.11.2017.

Stier, Sebastian, Arnim Bleier, Haiko Lietz, and Markus Strohmaier. 2017. "Platform effects on social media: Topic salience in a representative survey, Facebook and Twitter during an election campaign." International Conference on Computational Social Science (IC²S² 2017), Cologne, 13.07.2017.

Kaczmirek, Lars, Philipp Mayr, Ravi Vatrapu, Arnim Bleier, Manuela S. Blumenberg, Tobias Gummer, Kjeld Hansen, Abid Hussein, Zeshan Ali Jaffari, Katharina E. Kinder-Kurlanda, Haiko Lietz, Markus Strohmaier, Claudia Wagner, Katrin Weller, Christof Wolf, and Chris James Zimmerman. 2014. "PEP-TF: Social media monitoring of the campaigns for the 2013 German Bundestag elections on Facebook and Twitter." Social Media Communication Workshop, Mannheim, 28.03.2014.

Lietz, Haiko, and Andreas Strotmann. 2013. "A network based delineation of the social network research field." XXXIII Sunbelt International Social Network Conference, Hamburg.

Lietz, Haiko. 2013. "On relational sociology." International Conference on Network Science (NetSci 2013), Copenhagen.

Lietz, Haiko, and Mathias Riechert. 2013. "Science dynamics: Normalized growth curves, sharpe ratios, and scaling exponents." 14th International Society of Scientometrics and Informetrics Conference (ISSI 2013), Vienna.

Lietz, Haiko. 2012. "Science as a punctuated equilibrium." International Conference on Network Science (NetSci 2012), Northwestern University, Evanston, IL.

Lietz, Haiko. 2010. "Beitrag der Relationalen Soziologie zur Szientometrie: Ein Werkstattbericht." Netzwerke erfassen, analysieren und verstehen: Zur Integration von Daten, Methoden und Theorien, Tagung der Sektion Soziologische Netzwerkforschung der Deutschen Gesellschaft für Soziologie, Berlin.

Lietz, Haiko. 2010. "Diagnosing emerging science: The cases 'New Science of Networks' and scientometrics." 3rd ENID Conference on STI Indicators for Policy Making and Strategic Decision, Paris. http://www.haikolietz.de/docs/densification.pdf.

Lietz, Haiko. 2009. "Diagnose von Emerging Science: Die Fälle 'New Science of Networks' und Szientometrie." Wissen – Wissenschaft – Organisation, 12. Tagung der Deutschen ISKO, Bonn.

Lietz, Haiko. 2008. "Komplexe soziale Systeme, Emergenz und Selbstähnlichkeit: Zum neuen Paradigma der Komplexitätstheorie." Netzwerkanalyse und Netzwerktheorie: Ein neues Paradigma in den Sozialwissenschaften, Konferenz der Sektion Soziologische Netzwerkanalyse, Frankfurt. https://nbn-resolving.org/urn:nbn:de:0168-ssoar-62887-7.

Lietz, Haiko. 2008. "Self-similarity of complex social networks: A sociological perspective." 5th Conference on Applications of Social Network Analysis (ASNA 2008), Zürich.

Lietz, Haiko. 2008. "Zur Selbstähnlichkeit komplexer sozialer Netzwerke." 19. Internationale Wissenschaftliche Konferenz Mittweida (IWKM 2008), Mittweida.

Lietz, Haiko. 2007. "The fractal polity: Why Schröder failed at the second term." International Workshop and Conference on Network Science (NetSci 2007), Queens, NY.

Liepelt, Klaus, and Haiko Lietz. 2006. "Before and after the exchange of ruling elites: Informal political networks in Germany's parliament." XXVI Sunbelt International Social Network Conference, Vancouver, BC.

Liepelt, Klaus, and Haiko Lietz. 2006. "Informelle Netzwerke in deutschen Parlamenten und ihre Bedeutung." Tagung der Sektion Modellbildung und Simulation der Deutschen Gesellschaft für Soziologie, Köln.

Lietz, Haiko. 2006. "Social Network Analysis im journalistischen Einsatz." 1. Fachtagung Computer Assisted Reporting, Hamburg.

Sonstiges

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Durchführung auswärtiger Weiterbildung

Lietz, Haiko, and Marcos Oliveira. 2019. "Introduction to Python’s graph-tool."

Organisation

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Event

Ellwardt, Lea, Markus Gamper, and Haiko Lietz. 2019. "2. Kölner Netzwerktagung." Tagung der Sektion Soziologische Netzwerkforschung der Deutschen Gesellschaft für Soziologie, Köln, 14.02.2019 - 15.02.2019.

Karimi, Fariba, and Haiko Lietz. 2015. "Application of Network Theory in Computational Social Science." 2nd GESIS Computational Social Science Winter Symposium, 01.12.2015.

Ellwardt, Lea, Markus Gamper, Haiko Lietz, and Holger Spieckermann. 2015. "Kölner Netzwerktagung." Tagung der Sektion Soziologische Netzwerkforschung der Deutschen Gesellschaft für Soziologie, Köln, 05.10.2015 - 06.10.2015.