- 1 Trust in Interpersonal, Social, and Sensor Networks
- 1.1 Research Topics
- 1.2 Publications
- 1.3 Presentations
- 1.4 Ontologies
- 1.5 Prototypes, Demos and Tools
- 1.6 Related Material
Trust in Interpersonal, Social, and Sensor Networks
Trust relationships occur naturally in many diverse contexts such as ecommerce, social interactions, social networks, ad hoc mobile networks, distributed systems, decision-support systems, (semantic) sensor web, emergency response scenarios, etc. As the connections and interactions between humans and/or machines (collectively called agents) evolve, and as the agents providing content and services become increasingly removed from the agents that consume them, miscreants attempt to corrupt, subvert or attack existing infrastructure. This in turn calls for support for robust trust inference (e.g., gleaning, aggregation, propagation) and update (also called trust management). Unfortunately, there is neither a universal notion of trust that is applicable to all domains nor a clear explication of its semantics in many situations. Because Web, social networking and sensor information often provide complementary and overlapping information about an activity or event that are critical for overall situational awareness, there is a unique need for understanding and development of techniques for managing trust that span all these information channels. Currently, we are pursuing research on trust and trustworthiness issues in interpersonal, social, and sensor networks, to potentially unify and integrate them for exploiting their complementary strengths.
A Local Qualitative Approach to Referral and Functional Trust
Trust is a key issue in diverse applications spanning ecommerce, social networks, semantic sensor web, semantic web information retrieval systems, etc. Both humans and machines use some form of trust to make informed and reliable decisions before acting. In this research, we reviewed drawbacks of existing approaches to trust and then proposed a new local framework to explore two different kinds of trust among agents, namely, referral trust and functional trust. These have been modeled using local partial orders, to enable qualitative trust personalization. The proposed approach formalizes reasoning with trust, distinguishing between direct and inferred trust. It is also capable of dealing with general trust networks with cycles.
Trust and Trustworthiness Issues for Social and Sensor Web
We explore research issues relevant to trust and trustworthiness in social and sensor networks, and interactions and exchanges they promote. We advocate a balanced, iterative approach to trust that marries both theory and practice. On the theoretical side, we investigate models of trust to analyze and specify the nature of trust and trust computation. On the practical side, we propose to uncover aspects that provide a basis for trust formation and techniques to extract trust information from concrete social/sensor networks and interactions. We expect the development of formal models of trust and techniques to glean trust information from social media and sensor web to be fundamental enablers for applying semantic web technologies to trust management.
While we all have an intuitive notion of trust, the literature is scattered with
a wide assortment of differing definitions and descriptions; often
these descriptions are highly dependent on a single domain or
application of interest. In addition, they often discuss orthogonal
aspects of trust while continuing to use the general term “trust”.
In order to make sense of the situation, we have developed an
ontology of trust that integrates and relates its various aspects
into a single model.
- Comparative Trust Management with Applications: Bayesian Approaches Emphasis
- Krishnaprasad Thirunarayan, Pramod Anantharam, Cory Henson, Amit Sheth
- In the Journal of Future Generation Computer Systems, May 2013 (Accepted).
- Topical Anomaly Detection for Twitter Stream
- Pramod Anantharam, Krishnaprasad Thirunarayan, Amit Sheth
- In the Proceedings of ACM Web Science 2012, In Conjunction with NetSci 2012 Evanston, Illinois, June 22-24, 2012.
- Trust Networks: Interpersonal, Sensor, and Social (invited paper)
- Krishnaprasad Thirunarayan and Pramod Anantharam
- in Proceedings of 2011 International Conference on Collaborative Technologies and Systems (CTS 2011), pp. 13-21, Philadelphia, Pennsylvania, USA, May 23-27, 2011.
- Trust Model for Semantic Sensor and Social Networks: A Preliminary Report
- Pramod Anantharam,Cory Henson,Krishnaprasad Thirunarayan and Amit Sheth
- in Proceedings of 2010 National Aerospace & Electronics Conference (NAECON), Dayton Ohio, July 14-16th, 2010
- Provenance Aware Linked Sensor Data
- Harshal Patni, Satya S. Sahoo, Cory Henson, and Amit Sheth
- In: Proceedings of 2010 2nd Workshop on Trust and Privacy on the Social and Semantic Web, Co-located with ESWC, Heraklion Greece, 30th May - 03 June 2010.
- Some Trust Issues in Social Networks and Sensor Networks
- Krishnaprasad Thirunarayan, Pramod Anantharam, Cory Henson, and Amit Sheth
- In: Proceedings of 2010 International Symposium on Collaborative Technologies and Systems (CTS 2010), Chicago, IL, May 17-21, 2010.
- A Local Qualitative Approach to Referral and Functional Trust
- Krishnaprasad Thirunarayan, Dharan Althuru, Cory Henson, and Amit Sheth
- In: Proceedings of the The 4th Indian International Conference on Artificial Intelligence (IICAI-09), pp. 574-588, December 2009.
- Situation Awareness via Abductive Reasoning for Semantic Sensor Data: A Preliminary Report
- Krishnaprasad Thirunarayan, Cory Henson, and Amit Sheth
- In: Proceedings of the 2009 International Symposium on Collaborative Technologies and Systems (CTS 2009), Baltimore, MD, May 18-22, 2009.
- A Framework for Trust and Distrust Networks
- K. Thirunarayan, and R. Verma, A Framework for Trust and Distrust Networks, In: Proceedings of Web 2.0 Trust Workshop (W2Trust), June 2008.
- Trust Networks T. K. Prasad delivers a tutorial at the The 2012 International Conference on Collaboration Technologies and Systems (CTS 2012), Denver, Colorado, USA, May 21-25, 2012.
- Trust Networks T. K. Prasad delivers an invited talk at the 5th Indian International Conference on Artificial Intelligence, Tumkur, India, December 14-16, 2011.
- Trust Networks: Interpersonal, Sensor, and Social TK Prasad delivers the trust tutorial at International Conference on Collaborative Technologies and Systems (CTS 2011), May 23-27, 2011.
- Trust Networks: Interpersonal, Social and Sensor: Dr. T. K. Prasad delivered this technical seminar at the InfoTech 2010 conference, Dayton, OH, October 18-21, 2010.
- Research in Semantic Web and Information Retrieval: Trust, Sensors, and Search: Dr. T. K. Prasad delivered this keynote at GMRIT, AP, India, December 10 - 11, 2009
- Semantic Web techniques empower perception and comprehension in Cyber Situational Awareness: Dr. Amit Sheth delivered this talk at the ARO Cyber Situational Awareness Workshop, Fairfax, VA, November 14-15, 2007.
Prototypes, Demos and Tools
- Trusted Perception Cycle: demo
This demo helps in visualizing the perception cycle (abductive inference) and reputation values computed for weather stations over a period of six days. Various features inferred from raw sensor data using the perception cycle are depicted with different colors of the bars and height of the bar represents the reputation value of each weather station. The demo shows all the inferred features and the way in which the reputation computation converges. Main contributions include: (1) Development and formalization of perception cycle (2) Implementation of a reputation system which used beta-pdf distribution to compute trust values.
- Semantic Sensor Observation Service (MesoWest): demo
Computing for Human Experience
- Semantics-Empowered Sensors, Services, and Social Computing on the Ubiquitous Web (Amit Sheth's article, keynote presentation/video)
- Citizen sensing and Social Signals (Amit Sheth's blog, article, keynote presentation)
Contact Information: Pramod Anantharam