M.O.S.A.I.C Research Group

 

 

 

 
Sanat Kumar Bista  

        Department of Computing

        Room No: A3.11, Horton Building

        University of Bradford

        Bradford BD7 1DP

        United Kingdom

        TEL.: +44 (0)1274 233948

        E-MAIL: s.k.bista AT bradford.ac.uk

 

Qualifications: 

Master of Technology (M. Tech) in Information Technology, magna cum laude, Kathmandu University, Nepal
 Bachelor Engineering in Computer Engineering, Kathmandu University, Nepal

Current status:  PhD Research Student in the Department of Computing, School of Informatics at the University of Bradford

Research Group:  MOSAIC

Supervisors:  Dr Keshav P Dahal, Professor Peter I Cowling  

Research project:  Artificial Intelligence for Trust Modelling

Research interests:  Artificial Intelligence, Computational Models of Trust and Reputation, Evolution of Cooperation,

Business Information Systems, Operational Research

Research Summary

With growing popularity of online market places like eBay and the presence of strategic players to defect others and maximize their own profit, it has become necessary to identify efficient ways to address the trust related problems in such environment. Trust is a crucial component of social existence and as a foundation of the human civilisation, trust continues to be important in all aspects of a human life. Whether we rely or not on some object is guided by how much trust worthy that object is to us. In social context, trust worthiness is assessed in several ways, for example by referring to the past history of interaction, word-of-mouth, reliable third party certification, social reputation etc (Dellarocas, 2003, Aberer et al., 2003) (Adomavicus and Tuzhilin, 2005). Computational model of trust in online societies and Peer-to-Peer communities however is not straightforward in a sense that it lacks the human common sense which is used extensively by humans in making decision. One of the common ways of assessing trustworthiness in online societies is reputation mechanism and it has emerged as important component of electronic markets in eliciting cooperation within loosely coupled and geographically dispersed economics agents (Dellarocas, 2005). Online auction and business sites like eBay, Yahoo Auction, Amazon.com etc use simple yet effective reputation management frameworks to provide their user with reputation information of users or objects that they are assessing. The success of these trading environments proves that reputation mechanism is an effective way of inferring trust worthiness in the transacting parties. However, many of the current systems have been presenting data to the users on the past history of the traders without actually processing it to make the user’s decision making easier. Further, there hasn’t been much research on how and to what extent a particular trustworthiness assessment model could effectively filter dishonest behaviours while promoting cooperation in the trading society. In our research, we intend to suggest some probabilistic and hybrid models which could be an effective trust measurement utility. We then test the effectiveness of these models in a game theory based business game environment to analyse to what extent our models can contribute in promoting the evolution of cooperative players in the society, which is in fact the desired situation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Publications:

S.K.Bista, K.P. Dahal, P.I. Cowling and B.M. Tuladhar  (2009): "Evolution of Cooperativeness in a Business Game Relying on Acquaintance Based Trustworthiness Assessment", proc. IEEE Conference on Commerce and Enterprise Computing (CEC09). Won "best paper" award., Vienna, Austria. (Published by IEEE Computer Society press 1winner out of 98 papers submitted, 21 full papers accepted)

S.K.Bista, K.P.Dahal, P.I.Cowling, B.M. Tuladhar (2008), Evolution of Cooperation in an Incentive Based Business Game Environment, In the proceedings of ICADAM 2008- Springer, Sanya, China

S.K.Bista, K.P.Dahal, P.I.Cowling, B.M. Tuladhar (2008) Unraveling the Evolution of Defectors in Online Business Games, In the proceedings of SKIMA 2008, Kathmandu, Nepal

S.K. Bista, K.P. Dahal, P.I Cowling, B.M. Tuladhar. Metrics for computing trust in multi-agent environment, 8th Informatics Workshop, Bradford, UK, 2007.

S.K.Bista, K.P. Dahal, P.I.Cowling, B.M. Tuladhar. TruMet: An approach towards Computing Trust in Multi-Agent Environment, Proceedings of International conference on Software Knowledge Information Management and Applications, Chiangmai, Thailand 2006

S.K. Bista, K.P. Dahal, B.M. Tuladhar. Agent Oriented Peer-Peer Supply Chain for Collaborative Planning Forecasting and Replenishment, 7th Informatics Workshop, Bradford, UK, 2006.

Shrestha N., Hall Patrick A.V., Bista S. K. “Resources for Nepali Word Sense Disambiguation”, IEEE International conference on Natural Language Processing and Knowledge Engineering (IEEE NLP-KE’08), Beijing, China, 2008

 

Shrestha N., Hall Patrick A.V., Bista S. K. “Dictionary containing Example based Nepali WSD”, ICON 2008, Pune, India, 2008.

 

Shrestha N., Hall Patrick A.V., Bista S. K. “Word Sense Disambiguation; a Brief Survey with Application to Nepali”, 29th Annual Conference of Linguistic Society of Nepal, Kathmandu, Nepal, 2008.

Y.P. Yadava, G R Bhattarai, S. K. Bista,  B. Keshari and  J. Bhatta, Envisioning Machine Translation for the New Millennium: Outlines of Preliminary Steps in Nepal. Contemporary Issues in Nepalese Linguistics, ed. by Yogendra P. Yadava et al., pages 429-439, Kathmandu: Linguistics Society of Nepal, 2005. 

B. Keshari, J. Bhatta and S.K. Bista. Nepali Part-of-Speech Guesser and Its Application in Lexicon Building. Proceedings of International Conference On Natural Language Processing, ICON-2005, IIT Kanpur, India, 2005.

 B. Keshari, J. Bhatta and S.K. Bista. Handling Honorification in Dobahse: Online English-to-Nepali Machine Translation System. Proceedings of Third Asian Applied Computing Conference (AACC - 2005), Kathmandu, Nepal, 2005.

 B. Keshari and S.K. Bista, UNL Nepali Deconverter. International-CALIBER 2005, Kochi, India, 2005.

 Bhim Prasad Upadhyaya, Birendra Keshari and Sanat Kumar Bista, Morphological Analyser for Nepali Language. Reserch KU-CSE-1-20005, Dept. of CSE, Kathmandu University, Kathmandu, January 2005. (Internal Technical Report)

 S.K. Bista, and B.Keshari. Standardization issues in  Loclization, Proceedings of the 5th CAN ICT International Conference, January 2005, Nepal.

 S.K. Bista, and B. Keshari, Research Techniques for a new  keyboard layout design, Workshop on Keyboard layout Design, Nepal.2004.

 

Useful Links:

Kathmandu University

Dobhase: Machine Translation System

PAN Localization Project

Home Page: Andreas Wombacher (my M. Tech thesis Supervisor)

Google Scholar

Elsevier Science Direct

The ACM Digital Library

IEEE Xplore

CiteSeer.IST : Scientific Literature Digital Library