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Published in: Knowledge and Information Systems 2/2015

01-05-2015 | Regular Paper

Learning to suggest questions in social media

Authors: Tom Chao Zhou, Michael Rung-Tsong Lyu, Irwin King, Jie Lou

Published in: Knowledge and Information Systems | Issue 2/2015

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Abstract

Social media systems with Q&A functionalities have accumulated large archives of questions and answers. Two representative types are online forums and community-based Q&A services. To enable users to explore the large number of questions and answers in social media systems effectively, it is essential to suggest interesting items to an active user. In this article, we address the problem of question suggestion, which targets at suggesting questions that are semantically related to a queried question. Existing bag-of-words approaches suffer from the shortcoming that they could not bridge the lexical chasm between semantically related questions. Therefore, we present a new framework, and propose the topic-enhanced translation-based language model (TopicTRLM), which fuses both the lexical and latent semantic knowledge. This fusing enables TopicTRLM to find semantically related questions to a given question even when there is little word overlap. Moreover, to incorporate the answer information into the model to make the model more complete, we also propose the topic-enhanced translation-based language model with answer ensemble. Extensive experiments have been conducted with real-world datasets. Experimental results indicate our approach is very effective and outperforms other popular methods in several metrics.

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Metadata
Title
Learning to suggest questions in social media
Authors
Tom Chao Zhou
Michael Rung-Tsong Lyu
Irwin King
Jie Lou
Publication date
01-05-2015
Publisher
Springer London
Published in
Knowledge and Information Systems / Issue 2/2015
Print ISSN: 0219-1377
Electronic ISSN: 0219-3116
DOI
https://doi.org/10.1007/s10115-014-0737-z

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