Document (#39716)

Author
Liu, X.
Zheng, W.
Fang, H.
Title
¬An exploration of ranking models and feedback method for related entity finding
Source
Information processing and management. 49(2013) no.5, S.995-1007
Year
2013
Abstract
Most existing search engines focus on document retrieval. However, information needs are certainly not limited to finding relevant documents. Instead, a user may want to find relevant entities such as persons and organizations. In this paper, we study the problem of related entity finding. Our goal is to rank entities based on their relevance to a structured query, which specifies an input entity, the type of related entities and the relation between the input and related entities. We first discuss a general probabilistic framework, derive six possible retrieval models to rank the related entities, and then compare these models both analytically and empirically. To further improve performance, we study the problem of feedback in the context of related entity finding. Specifically, we propose a mixture model based feedback method that can utilize the pseudo feedback entities to estimate an enriched model for the relation between the input and related entities. Experimental results over two standard TREC collections show that the derived relation generation model combined with a relation feedback method performs better than other models.
Content
Vgl.: doi: 10.1016/j.ipm.2013.03.004.
Theme
Semantisches Umfeld in Indexierung u. Retrieval
Retrievalalgorithmen

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