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Rajtmajer Lab @Penn State

AI and human-AI systems to understand information integrity,
with applications to privacy, security, and metascience

10/24/26. PAPER ON PEDAGOGICAL FRICTION IN DESIGN ACCEPTED TO CSET @ACSAC 2026
08/27/26. PAPERS ON SCIENCE OF SCIENCE ACCEPTED TO JCDL 2026
08/25/26. PAPER ON ONLINE HARMS TO VULNERABLE INDIVIDUALS ACCEPTED TO ACM GROUP 2027 
08/20/26. PAPER ON PRIVATE SYNTHETIC DATA GENERATION ACCEPTED TO EMNLP 2026
08/20/26. PAPER ON AFFECTIVE CONTEXT & LLM SYCOPHANCY ACCEPTED TO EMNLP 2026
07/28/26. PAPER ON ANTI-VAX CONTENT BY STATE LEGISLATORS ACCEPTED TO VACCINE
07/16/26. PAPER ON GOVERNING LLMs IN PEER REVIEW ACCEPTED TO AIES 2026
07/09/26. PAPER BENCHMARKING HYBRID HUMAN-AI FAKE NEWS ACCEPTED TO COLM 2026
05/15/26. PAPER ON LLM AGENTS FOR BENCHMARKING REPRODUCIBILITY ACCEPTED TO KDD 2026
04/09/26. PAPER ON SELF-CENSORSHIP ONLINE ACCEPTED TO CSCW 2026
04/04/26. PAPER ON PRIVATE SYNTHETIC DATA GENERATION ACCEPTED TO FINDINGS OF ACL 2026
03/16/26. PAPER ON SOCIAL MEDIA MIGRATION ACCEPTED TO ICWSM 2026
11/10/25. PAPER ON ALGORITHMIC OTHERING IN LLMs ACCEPTED TO AAAI 2026
11/01/25. PAPER INTRODUCING OUR CC30K DATASET ACCEPTED TO JCDL 2025
10/10/25. PAPER ON OPEN SCIENCE PRACTICES IN HCI ACCEPTED TO PLOS ONE
08/03/25. PAPER ON DEEPFAKE DETECTION & INTERVENTIONS ACCEPTED TO CSCW 2025
07/29/25. PAPER ON CONTENT MODERATION PUBLISHED IN HARVARD MISINFORMATION REVIEW
07/18/25. PAPER ON AI IN SOCIAL SCIENCE ACCEPTED TO AIES 2025
07/14/25. NEW **NSF FUNDING** TO BUILD AI PREDICTION MARKETS
05/15/25. PAPER ON EMOTION RECOGNITION IN TEXT ACCEPTED TO ACL 2025
04/30/25. REPRODUCIBILITY STUDY PUBLISHED IN RESCIENCE C
03/26/25. LARGE-SCALE SURVEY ON SCIENTIFIC PRACTICES PUBLISHED IN PLOS ONE
01/25/25. PAPER ON LLMs AND FAKE NEWS ACCEPTED TO NAACL 2025
09/20/24. PAPER ON HALLUCINATIONS IN LLMs ACCEPTED TO EMNLP 2024

                                     SEE MORE

  1. A. Squicciarini, S. Rajtmajer, N. Zannone. Multi-Party Access Control: Requirements, State of the Art and Open Challenges. Symposium on Access Control Models and Technologies (SACMAT). June 2018.

  2. N. Gilbert, R. Bernier, V. Calhoun, E. Brenner, E. Grossner, S. Rajtmajer and F. Hillary. Diminished Neural Network Dynamics after Moderate and Severe Traumatic Brain Injury. PLoS One, June 2018. 

  3. J. Semonsen, C. Griffin, A. Squicciarini, S. Rajtmajer. Opinion Dynamics in the Presence of Increasing Agreement Pressure. IEEE Transactions on Cybernetics. February 2018. 

  4. S. Rajtmajer, A. Squicciarini, J. Such, J. Semonsen, and A. Belmonte. An Ultimatum Game Model for the Evolution of Privacy in Jointly Managed Content. Conference on Decision and Game Theory for Security (GAMESEC), October 2017.

  5. C. Qiu, A. Squicciarini, S. Rajtmajer and J. Caverlee. Dynamic Contract Design for Heterogeneous Workers in Crowdsourcing for Quality Control. International Conference on Digital Society (IEEE ICDS), July 2017.

  6. A. Squicciarini, S. Rajtmajer and C. Griffin. Positive and Negative Behavioral Analysis in Social Networks. WIRE Data Mining and Knowledge Discovery, May 2017.

  7. J. Semonsen, C. Griffin, A. Squicciarini, and S. Rajtmajer. Consensus on Social Graphs under Increasing Peer Pressure (Extended Abstract). International Conference on Autonomous Agents and Multiagent Systems (AAMAS), May 2017.

  8. H. Zhong, H. Li, A. Squicciarini, S. Rajtmajer, C. Griffin, D. Miller and C. Caragea. Content- Driven Detection of Cyberbullying on the Instagram Social Network. International Conference on Artificial Intelligence (IJCAI), July 2016.

  9. C. Liao, A. Squicciarini, C. Griffin and S. Rajtmajer. A Hybrid Epidemic Model for Deindividuation and Antinormative Behavior in Online Social Networks. Social Network Analysis and Mining (SNAM), January 2016.

  10. C. Griffin, S. Rajtmajer, and A. Squicciarini.  A Model of Paradoxical Privacy Behavior (Invited paper). International Conference on Collaboration and Internet Computing (IEEE CIC), October 2016.

  11. A. Tyagi, A. Squicciarini, S. Rajtmajer, C. Griffin. An In-Depth Study of Peer Influence on Collective Decision Making for Multi-party Access Control (Invited Paper). International Conference on Information Reuse and Integration (IEEE ICI), July 2016.

  12. S. Rajtmajer, C. Griffin and A. Squicciarini. Constrained Social-Energy Minimization for Multi- Party Sharing in Online Social Networks. International Conference on Autonomous and Multiagent Systems (AAMAS), Singapore, May 2016.

  13. S. Rajtmajer, C. Griffin and A. Squicciarini. Determining a Discrete Set of Site-Constrained Privacy Options for Users in Social Networks through Stackelberg Games. Conference on Decision and Game Theory for Security (GAMESEC), London, UK, November 2015.

  14. C. Liao, A. Squicciarini, C. Griffin and S. Rajtmajer. A Hybrid Epidemic Model for the Spread of Abusive Content in Online Social Sites. In Proc. 2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), August 2015. 

  15. A. Squicciarini, S. Rajtmajer, Y. Liu and C. Griffin. Identification and Characterization of Cyberbullying Dynamics in an Online Social Network. In Proc. 2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), August 2015. 

  16. S. Rajtmajer, C. Griffin, D. Mikesell and A. Squicciarini. An Evolutionary Game Model for the Spread of Non-Cooperative Behavior in Online Social Networks. In Proc. 30th ACM Symposium on Applied Computing, April 2015.

  17. S. Rajtmajer, A. Roy, R. Albert, P. Molenaar and F. Hillary. A Voxelwise Approach to Determine Consensus Regions-of-Interest for the Study of Brain Network Plasticity. Frontiers in Neuroanatomy, July 2015. 

  18. F. Hillary, N. Castellanos, R. Bajo and S. Rajtmajer. Hyperconnectivity as a Common Neural Response to Neurological Disorder. Neuropsychology, January 2015.

  19. U. Venkatesan, S. Rajtmajer and F. Hillary. Connectivity modeling and neuroplasticity after trauma. In Plasticity of Cognition in Neurologic Disorders. Oxford University Press, January 2015.

  20. F. Hillary, S. Rajtmajer, C. Roman, J. Medaglia, J. Slocomb, D. Good and G. Wylie. The Rich Get Richer: Brain Injury Elicits Hyperconnectivity in Core Subnetworks. PLoS One, August 2014. 

  21. C. Griffin, A. Squicciarini, S. Rajtmajer, M. Tentilucci and S. Lin. Site-Constrained Privacy Options for Users in Social Networks through Stackelberg Games. In Proc. Sixth ASE International Conference on Social Computing, May 2014.

  22. D. Bein, B. Madan, S. Phoha, S. Rajtmajer and A. Rish. Dynamic Data-Driven Sensor Network Adaptation

  23. for Border Control. In Proc. SPIE Defense, Security and Sensing, April 2013.

  24. S. Rajtmajer, B. Smith and S. Phoha. Non-Negative Sparse Autoencoder Neural Networks for the Detection of Overlapping, Hierarchical Communities in Networked Datasets. Chaos, December 2012. 

  25. S. Rajtmajer and D. Vukicevic. A Note on the Estrada Communicability Algorithm for Community Structure Detection in Complex Networks. Applied Mathematics and Computation, December 2010. 

  26. D. Vukicevic, S. Rajtmajer and N. Trinajstic. Trees with Maximal Second Zagreb Index and Prescribed Number of Vertices of Given Degree. MATCH Communications in Mathematical and Computer Chemistry, January 2008. 

  27. D. Vukicevic, J. Sedlar and S. Rajtmajer. A Graph-Theoretical Method for the Partial Ordering of Alkanes. Croatica Chemica Acta 80: 169-179, February 2007. 

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