©2019 Sarah Rajtmajer, PhD

NEWS

Team selected for DARPA's SCORE program

23 October 2019

Dr. Rajtmajer and colleagues (Penn State, Texas A&M, Old Dominion, Microsoft Research) have been selected by the Defense Advanced Research Projects Agency (DARPA) to develop AI to score the credibility of research claims in the social and behavioral sciences. The team will build synthetic prediction markets populated by artificial agents (bot traders) that reason on information extracted from published papers and metadata. See the article in the Penn State News

Paper accepted to IEEE Big Data 2019

17 October 2019

"Toward Image Privacy Classification and Spatial Attribution of Private Content" has been accepted to IEEE Big Data 2019.  The work extends the problem of determining a single privacy label for a given image to jointly inferring a privacy label and detecting the specific areas of sensitive content within a privately labeled image. The paper is joint work with Drs. Haoti Zhong, Anna Squicciarini and David Miller (Penn State).

Paper accepted to Complex Networks 2019

7 October 2019

"Performance of a Multiplex Commodity Flow Network in the United States Under Disturbance" has been accepted to Complex Networks 2019.  The work furthers understanding of supply chain and commodity trade networks through construction and analysis of the interstate input-out multiplex network of the U.S. commodity and service sectors. The paper is joint work with Dr. Caitlin Grady (Penn State) and Dr. Alfonso Mejia (Penn State).

Paper accepted to CIKM 2019

9 August 2019

"Rating Mechanisms for Sustainability of Crowdsourcing Platforms" has been accepted to CIKM 2019.  The paper, in collaboration with Dr. Chexi Qiu (Rowan University) and Dr. Anna Squicciarini (Penn State) introduces rating mechanisms to evaluate the behavior of task requesters in crowdsourcing platforms. We take a game theoretic approach, validated on data from Amazon Mechanical Turk.

Paper accepted to GAMESEC 2019

28 July 2019

"Power Law Public Goods Game for Personal Information Sharing in News Comments" has been accepted to GAMESEC 2019.  The work proposes a public goods game model of user sharing in an online commenting forum. In particular, we assume that users who share personal information incur an information cost but reap the benefits of a more extensive social interaction. Freeloaders benefit from the same social interaction but do not share personal information. A preprint of the paper is available on the arXiv: https://arxiv.org/abs/1906.01677

Dr. Rajtmajer and Dr. Anna Squicciarini awarded College of IST seed grant

13 June 2019

Dr. Rajtmajer and Dr. Anna Squicciarini are amongst eight recipients of funding from the College of IST’s Seed Grant Program. The project, entitled "Game-theoretic Modeling of Individual Self-disclosure Online" aims to formalize models of information sharing and privacy behaviors in public online environments.

Paper submitted to GAMESEC 2019

4 June 2019

Dr. Rajtmajer and colleagues have submitted "Power Law Public Goods Game for Personal Information Sharing in News Comments" to GAMESEC 2019.  The work proposes a public goods game model of user sharing in an online commenting forum. In particular, we assume that users who share personal information incur an information cost but reap the benefits of a more extensive social interaction. Freeloaders benefit from the same social interaction but do not share personal information. A preprint of the paper is available on the arXiv: https://arxiv.org/abs/1906.01677

Dr. Rajtmajer and Dr. Ben Johnson receive award from Institute for Cyberscience

16 April 2019

Dr. Rajtmajer and Dr. Ben Johnson have received seed funding from Penn State's Institute for Cyberscience for proposed work, "Leveraging AI for Game-Theoretic Models of Judicial Decision Making". The project will explore rich historical data to better understand and model the mechanisms and impacts of judicial decision making. 

Rock Ethics ETE Fellows to present at undergraduate research exhibition

15 April 2019

The Rock Ethics Institute's Engineering, Technology and Ethics fellows (Jack Iffert, Ryan Jacobs, Vidur Mishra, Christopher Thomas and Nicholas Wanner) will present their work, titled "Security Risks and Ethical Implications for the Automation of Commercial Port Facilities" at the 2019 Penn State Undergraduate Research exhibition of April 17, 2019.  Their work is the culmination of a year-long project, co-advised by Dr. Rajtmajer, Dr. Caitlin Grady (Civil Engineering), Dr. Daniel Susser (IST) and Dr. Alan Wagner (Aerospace Engineering).

Dr. Rajtmajer to moderate panel on security and emerging technologies 

27 March 2019

Dr. Rajtmajer will moderate a panel discussion on Autonomous Systems and Emerging Technologies at the Center for Security Research and Education's Security and the Autonomous Future symposium, April 4th and 5th. The event will bring together national experts to explore how autonomous systems will effect our personal, national and global security.

Paper accepted to SIAM Journal on Applied Dynamical Systems

14 February 2019

Work with Dr. Christopher Griffin, Dr. Anna Squicciarini and Dr. Andrew Belmonte has been accepted to SIAM Journal on Applied Dynamical Systems (SIADS). The work, entitled "Consensus and Information Cascades in Game-Theoretic Imitation Dynamics with Static and Dynamic Network Topologies" provides a game-theoretic framework for modeling information spread online. A preprint is available on the arXiv: https://arxiv.org/abs/1903.11429.

Paper accepted to WWW 2019

21 January 2019

Work with Prasanna Umar and Dr. Anna Squicciarini has been accepted as a short paper to The Web Conference (WWW) 2019. The work, entitled "Detection and Analysis of Self-Disclosure in Online News Commentaries" presents a novel approach to the detection of language indicative of various types of self-disclosure, leveraging both syntactic and semantic information present in text.

Dr. Rajtmajer and Dr. Daniel Susser receive award from Center for Security Research and Education

20 January 2019

Dr. Rajtmajer and Dr. Daniel Susser have been awarded seed funding from Penn State's Center for Security Research and Education. The project, "Understanding the Impact of Self-Disclosure on Cognitive Security", will explore the contexts which prime individuals to self-disclose online in order to better understand the potential weaponization of personal information. The 1-year effort will engage graduate and undergraduate students from the College of IST, the Department of Philosophy, and across campus.

Beyond the Crisis: Research Ethics in the Age of Open Science

26 September 2018

Dr. Rajtmajer will present "Beyond the Crisis: Research Ethics in the Age of Open Science" at the Rock Ethics Institute Colloquia Series on October 4, 2018. The talk with discuss recent progress toward an interpretable scholarly record through promotion of transparency and openness in reporting and publishing.

Dr. Rajtmajer joins the Penn State faculty

11 August 2018

Dr. Rajtmajer has joined the faculty of Penn State's College of Information Sciences and Technology! Dr. Rajtmajer will hold a joint appointment at Penn State's Rock Ethics Institute.