An Adaptable Connectionist Text-Retrieval System With Relevance Feedback

  • Authors:
  • M. R. Azimi-Sadjadi;J. Salazar;S. Srinivasan;S. Sheedvash

  • Affiliations:
  • Colorado State Univ., Fort Collins;-;-;-

  • Venue:
  • IEEE Transactions on Neural Networks
  • Year:
  • 2007

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Abstract

This paper introduces a new connectionist network for certain domain-specific text-retrieval and search applications with expert end users. A new model reference adaptive system is proposed that involves three learning phases. Initial model-reference learning is first performed based upon an ensemble set of input-output of an initial reference model. Model-reference following is needed in dynamic environments where documents are added, deleted, or updated. Relevance feedback learning from multiple expert users then optimally maps the original query using either a score-based or a click-through selection process. The learning can be implemented, in regression or classification modes, using a three-layer network. The first layer is an adaptable layer that performs mapping from query domain to document space. The second and third layers perform document-to-term mapping, search/retrieval, and scoring tasks. The learning algorithms are thoroughly tested on a domain-specific text database that encompasses a wide range of Hewlett Packard (HP) products and for a large number of most commonly used single- and multiterm queries.