Opinion-based entity ranking
Information RetrievalPublished 17 August 2011Open access
Kavita Ganesan, ChengXiang Zhai
Citations104
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TL;DR
This paper proposes a different way of leveraging opinionated content, by directly ranking entities based on a user’s preferences, which is to represent each entity with the text of all the reviews of that entity.
Abstract
The deployment of Web 2.0 technologies has led to rapid growth of various opinions and reviews on the web, such as reviews on products and opinions about people. Such content can be very useful to help people find interesting entities like products, businesses and people based on their individual preferences or tradeoffs. \nMost existing work on leveraging opinionated content has focused on integrating and summarizing opinions on entities to help users better digest all the opinions. In this paper, we propose a different way of leveraging opinionated content, which is to directly rank entities based on a user's preferences. Our basic idea is to represent each entity with the text of all the reviews of the entity. Given a user's keyword query that expresses the desired features of an entity, we can then rank all the candidate entities based on how well their reviews match the user's preferences. We study several methods for solving this problem, including both standard text retrieval models and extensions of them to capture multiple aspects of preferences and perform opinion expansion. Experiment results on ranking entities based on opinions in two different domains (i.e., hotels and cars) show that the proposed extensions are effective and lead to improvement of ranking accuracy over the standard text retrieval models for this task.
Keywords
Computer Science
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