Context-Specific frequencies and discriminativeness for the retrieval of structured documents

Authors:
Jun Wang;Thomas Roelleke
Affiliations:
Computer Science Department, Queen Mary, University of London;Computer Science Department, Queen Mary, University of London
Venue:
ECIR'06 Proceedings of the 28th European conference on Advances in Information Retrieval
Year:
2006

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Abstract

Structured document retrieval requires the ranking of document elements. Previous approaches either aggregate term weights or retrieval status values, or propose alternatives to idf, for example, ief (inverse element frequency). We propose and investigate in this paper a new approach: Context-specific idf, which is, in contrast to aggregation-based ranking functions, parameter-free.