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Explicit semantic analysis (ESA) is a novel method that represents the meaning of texts in a high-dimensional space of concepts derived from Wikipedia. Several different ESA-based retrieval models have been proposed. However, these approaches depended on the performance of pseudo relevance feedback. In this paper, we propose a concept-based retrieval model under the language modeling framework. By...
The traditional information retrieval (IR) model always only use the BOW (bag-of-words)-based retrieval model or Concepts-based retrieval model. However BOW-based model ignore the rich semantic relations between the words and text, and Concept-based model always bring in the noisy concepts and loss the precision. Pseudo-relevance feedback (PRF) is a widely used method for improving retrieval effectiveness,...
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