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| Content Provider | ACM Digital Library |
|---|---|
| Author | Tseng, Belle Wang, Xuanhui Kang, Changsung Chang, Yi |
| Abstract | Many vertical search tasks such as local search focus on specific domains. The meaning of relevance in these verticals is domain-specific and usually consists of multiple well-defined aspects (e.g., text matching and distance in local search). Thus the overall relevance between a query and a document is a tradeoff between multiple relevance aspects. Such a tradeoff can vary for different types of queries or in different contexts. In this paper, we explore these vertical-specific aspects in the learning to rank setting. We propose a novel formulation in which the relevance between a query and a document is assessed with respect to each aspect, forming the multi-aspect relevance. In order to compute a ranking function, we study two types of learning-based approaches to estimate the tradeoff between these relevance aspects: a label aggregation method and a model aggregation method. Since there are only a few aspects, a minimal amount of training data is needed to learn the tradeoff. We conduct both offline and online test experiments on a local search engine and the experimental results show that our proposed multi-aspect relevance formulation is very promising. The two types of aggregation methods perform more effectively than a set of baseline methods including a conventional learning to rank method. |
| Starting Page | 453 |
| Ending Page | 462 |
| Page Count | 10 |
| File Format | PDF MP4 |
| ISBN | 9781450307475 |
| DOI | 10.1145/2124295.2124350 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2012-02-08 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Aggregation Multi-aspect relevance Web search |
| Content Type | Audio Text |
| Resource Type | Article |
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