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Document ranking and the vector-space model

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3 Author(s)
D. L. Lee ; Dept. of Comput. Sci., Hong Kong Univ. of Sci. & Technol., Hong Kong ; Huei Chuang ; K. Seamons

Efficient and effective text retrieval techniques are critical in managing the increasing amount of textual information available in electronic form. Yet text retrieval is a daunting task because it is difficult to extract the semantics of natural language texts. Many problems must be resolved before natural language processing techniques can be effectively applied to a large collection of texts. Most existing text retrieval techniques rely on indexing keywords. Unfortunately, keywords or index terms alone cannot adequately capture the document contents, resulting in poor retrieval performance. Yet keyword indexing is widely used in commercial systems because it is still the most viable way by far to process large amounts of text. Using several simplifications of the vector-space model for text retrieval queries, the authors seek the optimal balance between processing efficiency and retrieval effectiveness as expressed in relevant document rankings

Published in:

IEEE Software  (Volume:14 ,  Issue: 2 )