Cornelius is Senior Researcher and coordinator of the international research network Algorithmed Public Spheres (APS) at the Hans Bredow Institute for Media Research in Hamburg, as well as an associate at the Alexander von Humboldt Institute for Internet and Society (HIIG) in Berlin. His research interests include online hate speech, the role of algorithms for the selection of media content, and methodological aspects of computational social science.
Previously, Cornelius was a project leader at the HIIG as part of the research group “Networks of Outrage”, funded by the VolkswagenStiftung under its data journalism funding scheme. In addition to coordinating the APS research network, Cornelius was also chair of the annual conference of the Association of Internet Researchers, AoIR 2016, which took place from October 5-8 in Berlin, and which was jointly hosted by the HIIG and the Hans Bredow Institute.
Cornelius completed his PhD at the University of Düsseldorf in 2009 with a thesis on the corporate blog as an emerging genre of computer-mediated communication. Following this, he was a member of the interdisciplinary junior researchers group „Science and the Internet” at the University of Düsseldorf (2010-2012). Cornelius completeted a four-year personal grant from the Deutsche Forschungsgemeinschaft (DFG) for the project „Networking, visibility, information: a study of digital genres of scholarly communication and the motives of their users” at the Berlin School of Library and Information Science (BSLIS). From January to Juli 2013, Cornelius was a visiting fellow at the Oxford Internet Institute at the University of Oxford, and from September 2013 to August 2014 he was visiting assistant professor at the University of Amsterdam’s Department of Media Studies. From 2015 to 2016 he also served as visiting professor of digital communication at Zeppelin University in Friedrichshafen. In fall 2015-2016 he was a Faculaty Associate at Harvard University’s Berkman Klein Center for Internet and Society. He is a co-editor of volume Twitter and Society (Peter Lang, 2014) and serves on the editorial board of the Journal of Broacasting and Electronic Media. He is a member of DGPuK, ICA and AoIR, and enjoys all things R-related.
His personal website is available at cbpuschmann.net
Algorithms decide what you see when on the Internet and in which order by deciding on the priority and contents. Since it also affects opinion formation on socially relevant topics, a research team of the Hans-Bredow-Institut summarises the state of research in a report for the German Bundestag and...
Within the scope of this project, a discourse analyses on the topics of drug policy and drug consumption in social media will be carried out in an explorative way.
How can we better understand the inner workings of algorithms and their significance for us individually and as a society? The network Algorithmed Public Spheres invites international researchers from different fields to address this question.
The project has analyzed the coordination and communication efforts of right-wing populist movements based on digital trace data.
The Herrenhausen Conference "Society through the Lens of the Digital" explored the role of the social sciences and the humanities in a society saturated with debates on the effects of digitization.
Puschmann, C.; Ausserhofer, J.; Maan, N.; Hametner, M. (2017): It’s All About Information: The Following Behaviour of Professors and PhD Students on Twitter. In: International Journal of Communication. Vol. 8, pp. 1690-1709 (online).
Heyd, T.; Puschmann, C. (2016): Hashtagging and Functional Shift: Adaptation and Appropriation of the #. In: Journal of Pragmatics. DOI: 10.1016/j.pragma.2016.12.004.
Puschmann, C.; Scheffler, T. (2016): Topic Modeling for Media and Communication Research: A Short Primer. Berlin: HIIG (HIIG Discussion Paper Series No. 2016-05). DOI: 10.2139/ssrn.2836478.
Scheliga, K.; Friesike, S.; Puschmann, C.; Fecher, B. (2016): Setting Up Crowd Science Projects. In: Public Understanding of Science. DOI: 10.1177/0963662516678514 (pdf).
Puschmann, C.; Bastos, M.; Schmidt, J.-H. (2016): Birds of a Feather Petition Together? Characterizing E-Petitioning through the Lens of Platform Data. In: Information, Communication & Society. Online first. DOI: 10.1080/1369118X.2016.1162828.
Puschmann C.; Ausserhofer, J. (2016): Social Data APIs: Origin, Types, Issues. In: Schäfer, M. T.; van Es, K. (eds.), The Datafied Society. Amsterdam: Amsterdam University Press. pp. 147-154.
Puschmann, C.; Ausserhofer, J.; Maan, N.; Hametner, M. (2016): Information Laundering and Counter-Publics: The News Sources of Islamophobic Groups on Twitter. In: Workshops of the Tenth International AAAI Conference on Web and Social Media: Technical Report WS-16-19. Menlo Park, CA: AAAI Press. pp....
Ford, H.; Dubois, E.; Puschmann, C. (2016): Keeping Ottawa Honest—One Tweet at a Time? Politicians, Journalists, Wikipedians and Their Twitter Bots. In: International Journal of Communication, vol. 10(24).
Fecher, B.; Puschmann, C. (2015): Über die Grenzen der Offenheit in der Wissenschaft: Anspruch und Wirklichkeit bei der Bereitstellung und Nachnutzung von Forschungsdaten [On the Limits of Openness in Science: Between Aspiration and Reality when Sharing Research Data]. In: Information - Wissens...
Puschmann, C.; Bastos, M. (2015): How Digital are the Digital Humanities? An Analysis of Two Scholarly Blogging Platforms. In: PLoS ONE, Vol. 10(2), e0115035.
Puschmann, C. (2015): The Form and Function of Quoting in Digital Media. In: Discourse, Context & Media, Jg. 7, pp. 28-36.
Puschmann, C.; Hagelmoser, R. (2015): Corporate Blogging and Corporate Social Media. In: A. Georgakopoulou, T. Spilioti (eds.), The Routledge Handbook of Language and Digital Communication. London: Routledge. pp. 226-238.
Puschmann, C. (2015): A Digital Mob in the Ivory Tower? Context Collapse in Scholarly Communication Online. In: M. Bondi, S. Cacchiani, D. Mazzi (eds.), Discourse in and through the Media: Recontextualizing and Reconceptualizing Expert Discourse. Newcastle upon Tyne: Cambridge Scholars Publishing, p...
Puschmann, C.; Peters, I. (2015): Informationsverbreitung in sozialen Medien [Information Diffusion in Social Media]. In: J-H. Schmidt, M. Taddicken (eds.), Handbuch Soziale Medien [Handbook Social Media]. Wiesbaden: Springer Fachmedien, pp. 1-23.
Puschmann, C.; Bozdag, E. (2014): Staking Out the Unclear Ethical Terrain of Online Social Experiments. In: Internet Policy Review, Vol. 3(4).
Mahrt, M.; Puschmann, C. (2014): Science Blogging: An Exploratory Study of Motives, Styles, and Audience Reactions. In: Journal of Science Communication, Vol. 13(3), A05.
Puschmann, C. (2014): (Micro)Blogging Science? Notes on Potentials and Constraints of New Forms of Scholarly Communication. In: S. Friesike, S. Bartling (eds.), Opening Science. New York: Springer. pp. 89-106.
Puschmann, C.; Burgess, J. (2014): Metaphors of Big Data. In: International Journal of Communication, Vol. 8, pp. 1690-1709.
Weller, K.; Bruns, A.; Burgess, J.; Mahrt, M.; Puschmann, C. (eds.) (2013): Twitter and Society. New York, NY: Peter Lang.
Puschmann, C. (2013): Blogging. In: S. C. Herring, D. Stein, T. Virtanen (eds.), Pragmatics of Computer-Mediated Communication. Berlin/New York: De Gruyter. pp. 83-108.
Gaffney, D.; Puschmann, C. (2013): Data Collection on Twitter. In: K. Weller, A. Bruns, J. Burgess, M. Mahrt, C. Puschmann (eds.), Twitter and Society. New York: Peter Lang. pp. 55-67.
Puschmann, C.; Burgess, J. (2013): The Politics of Twitter Data. In: K. Weller, A. Bruns, J. Burgess, M. Mahrt, C. Puschmann (eds.), Twitter and Society. New York: Peter Lang. pp. 43-54.
"Was uns auseinandertreibt - Hassreden im digitalen Zeitalter [What Sets Us Apart - Hate Speech in the Digital Age]", C. Puschmann participates at the event of the same name, including a panel discussion, organised by Stiftung Brandenburger Tor and the Schering Stiftung on 21 April 2017 in...
"Kommunikative Dynamiken rechtspopulistischer Empörungsöffentlichkeiten im Netz: Zur Beziehung von Themen, Akteuren und Quellen auf der Pegida-Facebookseite [Communicative Dynamics of Right-Wing Networks of Outrage: On the Relation of Topics, Actors and Sources on Pegida's Faceboo...
"Der Algorithmus entscheidet? Zum Einfluss automatisierter Selektion in digitalen Plattformen [The Algorithm Decides? On the Influence of Automated Selection on Digital Platforms]", talk by C. Puschmann at the "Doctoral Colloqium of the Institute of Communication and Media Studies (ic...
"Empörungsöffentlichkeiten im Netz: Zur Beziehung von Themen, Akteuren und Quellen auf der Pegida-Facebookseite [Outraged Publics Online: On the Relations of Topics, Actors and Sources on the Facebook Page of Pegida]“, talk by C. Puschmann at the "Annual Conference of the D...
"Opportunities and Challenges of Cultural Big Data for the Common Good", panel discussion with C. Puschmann at the "3rd Council of Europe Platform Exchange on Culture and Digitisation (CULTURE4D)" on 29 September 2016 in Tallinn.
"What Are the Topics of Populist Anti-Immigrant Movements on Facebook?“, talk by C. Puschmann at the conference "Social Media and Society 2016“ on 13 July 2016 in London.
"Alliance of Antagonism: Counter Publics and Polarisation in the German Language Online Climate Change Discourse“, talk by C. Puschmann at the panel "Communicating Nature, Sustainability, and Environmental Issues Using Online Media Channels“ at the "66th Annual Conference&...
"Scalable but Redundant? Developing Sensible Applications of Topic Modeling to Media Content”, talk by C. Puschmann at the Pre-Conference "Communication Research Methods Preconference (CRM16)“ prior to the "66th Annual Conference" of the International Communication As...
"Keeping Ottawa Honest One Tweet at a Time?”, talk by C. Puschmann at the pre-conference on "Algorithms, Automation and Politics“ prior to the "66th Annual Conference“ of the International Communication Association (ICA) on 8 June 2016 in Fukuoka (in collaboration wi...
"Information Laundering and Counter-Publics: The News Sources of Islamophobic Groups on Twitter”, talk by C. Puschmann at the preconference “SMNews16” of the event "ICWSM2016“ on 17 May 2016 in Cologne (in collaboration with J. Ausserhofer, N. Maan, M. Hametner).
"Data Collection in the Digital Era”, talk by C. Puschmann at the graduate workshop "Qualitative Research Methods in the Digital Era: How Interviews Have Been Re-Shaped by Technology?" organized by the universities of Neuchâtel/Freiburg/Geneva on 12 May 2016 in Geneva.
"Rage against the Elites? Polarisation and Counter-Publics in Online Discourse on Immigration and Climate Change", keynote speech by C. Puschmann at the conference "4th Lund Conference on Games, Interaction, Reasoning, Learning and Semantics (GIRLS)" on 28 April 2016 in Lund, Swe...
"Knowledge in the Aggregate? Techniques for Large-Scale Content Analysis and Their Limitations“, talk by C. Puschmann at the graduate seminar "Encompassing Methods of Knowledge Communication Research“ the Department of Business Communication at the University of Aarhus on 27 Ap...
„Wie interpretieren Nutzer Big Data? [How Do Users Interpret Big Data?]“, talk by C. Puschmann at the workshop of the annual conference "ABIDA Projekts (Assessing Big Data)“ at Münster University on 15 February 2016 in Münster.
"Combining Manual and Computational Text and Content Analysis", talk by C. Puschmann at a workshop of the annual "Computational Social Science Winter Symposium" on December 1, 2015 in Cologne.
“Dissemination, Discussion, Participation? Science Policy Concepts from Knowledge Dissemination to Citizen Science“, talk by C. Puschmann at the conference "Knowledge Dissemination in the Digital Era: Language and Episteme" at the University of Modena and Reggio Emilia on...
"Sozialwissenschaften durch Big Data? Ein "systematic review" zu Methoden, Daten und Fragestellungen der Computational Social Science [Social Sciences through Big Data? A "Systematic Review" on Methods, Data and Questions of Computational Social Science]", talk by C. Pu...
“Why LIWC Sucks (or: Saner Options for Social Media Content Analysis)”, talk by C. Puschmann at the second installment of “the FAIL! workshop series” on October 21, 2015 in Phoenix, USA.
“Ethical Issues in Digital Humanities Research”, talk by C. Puschmann as part of a seminar on “Ethics in Digital Humanities” at the University of Turku on October 1, 2015 in Turku, Finland.
“Linguistic and Interdisciplinary Perspectives on Online Discourse”, talk by C. Puschmann as part of a lecture series on “Digital Language in Use” at the University of Turku on September 30, 2015 in Turku, Finland.
“#fail: Narrativity and Metalinguistic Function in Hashtags”, talk by C. Puschmann at the conference “Personal Narrative Online” on June 27, 2015 in Bayreuth (together with T. Heyd).
“Beitragsrepertoires der rezeptionsbegleitenden Kommunikation via Twitter [Message Categories in Second-Screen Twitter Discourse]”, workshop presentation by C. Puschmann at “Co-Orientation in Media Reception: Practices of Second Screen Usage” on June 12, 2015 in Friedri...
“Sharing, Gathering and Interpreting Social Media Data on Policy Issues”, talk by C. Puschmann at the “Workshop on Co-Designing the Global Internet Policy Observatory (GIPO)” at the “EuroDIG 2015” on June 4, 2015 in Sofia.
“Measuring Meaning, Capturing Personality? Auditing Language-Assessing Algorithms”, talk by C. Puschmann as part of the “Workshop on Auditing Algorithms” at the “ICWSM 2015” on May 26, 2015 in Oxford.
“Text Mining with R: A Brief Overview”, talk by C. Puschmann at the “Cologne R User Group” on March 6, 2015 in Cologne.
“Long term motivation and power as key differentiators in crowd science platforms”, talk by C. Puschmann during the workshop on “Computational Social Science (CSS14)” at the annual conference “European Conference on Complex Systems (ECCS14)” on September 25, 2014...
“Exploring the Role of Social Media for Scholarly Communication”, talk by C. Puschmann given to the Department of Intercultural Communication at Copenhagen Business School on August 21, 2014 in Copenhagen.
“Facebook’s Emotional Contagion Experiment and User Rights”, talk by C. Puschmann at the weekly “HIIG journal club” on July 2, 2014 in Berlin (in collaboration with E. Bozdag).
“Operationalizing different scholarly roles in the humanities through author level metrics”, talk by C. Puschmann at the “Big (& Messy) Data and Collaboration Workshop” on May 28, 2014 in Durham.
“Orthographic Variation as a Sociolinguistic Variable in Computer-Mediated Communication”, talk by C. Puschmann at the “Third Bonn Applied English Linguistics Conference (BAELc3)” on May 24, 2014 in Bonn.
“Writing styles and link patterns in academic networks”, talk by C. Puschmann as part of the Session “D5 (network analysis)” at the “General Online Research 2014(GOR14)” on March 6, 2014 in Cologne.
“Sentiment Analysis as a Technology of Interpretation”, talk by C. Puschmann at the winter school of the University of Amsterdam’s "Digital Methods Initiative" on January 13, 2014 in Amsterdam.
“Anmerkungen zur Institutionalisierung von Wissenschaftsblogs[Notes on the Institutionalization of Science Blogs]”, presentation by C. Puschmann at the workshop “Dynamisches Bewahren?! [Dynamic Maintenance?!]” at the German National Library on December 20, 2013 in Frankfurt....
“Vernetzung, Sichtbarkeit, Information? Nutzungsmotive informeller digitaler Kommunikationsgenres unter Wissenschaftlern in Deutschland und Großbritannien [Networking, Visibility, Information? Usage Motifs of Informal Digital Communication Genres of Scientists in Germany and Great Britai...
“But What Good Are They for Knowledge Dissemination? A Macroscopic Perspective of Digital Genres”, plenary talk by C. Puschmann at “CLAVIER 13: Discourse in and through the Media - Recontextualizing and reconceptualizing expert discourse” on November 4, 2013 in Modena.
“The politics of (Twitter) data”, keynote speech by C. Puschmann at the annual summer school of the “Digital Methods Initiative” on June 24, 2013 in Amsterdam.
“Wide Open or Locked Down? Platform Politics and Research Quality in Big Data Research”, talk by C. Puschmann as part of the panel “Big Data and Communication Research: Prospects, Perils, Alliances, and Impacts” at the annual meeting of the International Communication Associa...
“Collecting Twitter Data”, presentation by C. Puschmann at the event “New Social Media, New Social Science?” on April 16, 2013 in London, Great Britain.
“A Tale of Two Platforms: Emerging Communicative Patterns in Two Scientific Blog Networks”, talk by C. Puschmann as part of the “Nuffield/Oxford Internet Institute Social Networks Seminar Series” at Nuffield College on February 11, 2013 in Oxford.