Machine learning for information retrieval: Neural networks, symbolic learning, and genetic algorithms

Hsinchun Chen

Journal of the American Society for Information Science, 1995, vol. 46, issue 3, 194-216

Abstract: Information retrieval using probabilistic techniques has attracted significant attention on the part of researchers in information and computer science over the past few decades. In the 1980s, knowledge‐based techniques also made an impressive contribution to “intelligent” information retrieval and indexing. More recently, information science researchers have turned to other newer artificial‐intelligence‐based inductive learning techniques including neural networks, symbolic learning, and genetic algorithms. These newer techniques, which are grounded on diverse paradigms, have provided great opportunities for researchers to enhance the information processing and retrieval capabilities of current information storage and retrieval systems. In this article, we first provide an overview of these newer techniques and their use in information science research. To familiarize readers with these techniques, we present three popular methods: the connectionist Hopfield network; the symbolic ID3/ID5R; and evolution‐based genetic algorithms. We discuss their knowledge representations and algorithms in the context of information retrieval. Sample implementation and testing results from our own research are also provided for each technique. We believe these techniques are promising in their ability to analyze user queries, identify users' information needs, and suggest alternatives for search. With proper user‐system interactions, these methods can greatly complement the prevailing full‐text, keyword‐based, probabilistic, and knowledge‐based techniques. © 1995 John Wiley & Sons, Inc.

Date: 1995
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