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Computer Science > Information Retrieval

arXiv:1005.4752 (cs)
[Submitted on 26 May 2010]

Title:A database approach to information retrieval: The remarkable relationship between language models and region models

Authors:Djoerd Hiemstra, Vojkan Mihajlovic
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Abstract:In this report, we unify two quite distinct approaches to information retrieval: region models and language models. Region models were developed for structured document retrieval. They provide a well-defined behaviour as well as a simple query language that allows application developers to rapidly develop applications. Language models are particularly useful to reason about the ranking of search results, and for developing new ranking approaches. The unified model allows application developers to define complex language modeling approaches as logical queries on a textual database. We show a remarkable one-to-one relationship between region queries and the language models they represent for a wide variety of applications: simple ad-hoc search, cross-language retrieval, video retrieval, and web search.
Comments: Published as CTIT Technical Report 05-35
Subjects: Information Retrieval (cs.IR); Databases (cs.DB)
ACM classes: H.3.3
Report number: TR-CTIT-10-15
Cite as: arXiv:1005.4752 [cs.IR]
  (or arXiv:1005.4752v1 [cs.IR] for this version)
  https://doi.org/10.48550/arXiv.1005.4752

Submission history

From: Djoerd Hiemstra [view email]
[v1] Wed, 26 May 2010 08:04:33 UTC (18 KB)
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