TrustQ: a category reputation based question and answer system

Yuhua Lin; Haiying Shen

doi:10.1117/12.2050610

20 June 2014 TrustQ: a category reputation based question and answer system

Yuhua Lin, Haiying Shen

Proceedings Volume 9091, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIII; 90911N (2014) https://doi.org/10.1117/12.2050610
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

Question and Answering (Q/A) systems aggregate the collected intelligence of all users to provide satisfying answers for questions. A well-developed Q/A system should provide high question response rate, low response delay and good answer quality. Previous works use reputation systems to achieve the goals. However, these reputation systems evaluate a user with an overall rating for all questions the user has answered regardless of the question categories, thus the reputation score cannot accurately reflect the user's ability to answer a question in a specific category. In this paper, we propose TtustQ, a category reputation based Q/A System. TtustQ evaluates users' willingness and capability to answer questions in different categories. Considering a user has different willingness to answer questions from different users, TtustQ lets each node evaluate the reputation of other nodes answering its own questions. User a calculates user b's final reputation by considering both user a's direct rating and the indirect ratings on user b from other nodes. The reputation values facilitate forwarding a question to potential answerers, which improves the question response rate, response delay and answer quality. Our trace-driven simulation on PeerSim demonstrates the effectiveness of TtustQ in providing good user experience in terms of response rate and latency, and the answer quality.

Citation Download Citation

Yuhua Lin and Haiying Shen "TrustQ: a category reputation based question and answer system", Proc. SPIE 9091, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIII, 90911N (20 June 2014); https://doi.org/10.1117/12.2050610

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