Using Semantic and Phonetic Term Similarity for Spoken Document Retrieval and Spoken Query Processing
Fábio Crestani · Studies in fuzziness and soft computing · 2002
In classical Information Retrieval systems a relevant document will not be retrieved in response to a query if the document and query representations do not share at least one term. This problem is known as “term mismatch” . A similar problem can be found in spoken document retrieval and spoken query processing, where terms misrecognized by the speech recognition process can hinder the retrieval of potentially relevant documents. I will call this problem “term misrecognition”, by analogy to the term mismatch problem. This paper presents two classes of retrieval models that attempt to tackle both the term mismatch and the term misrecognition problems at retrieval time using term similarity information. The models make effective use of complete or partial knowledge of semantic and phonetic term similarity evaluated using statistical methods for the corpus. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.