The Rationale and Issues Associated With Relevance Feedback

1007 Words Feb 26th, 2018 4 Pages
The idea behind Relevance feedback is to take the results that are initially returned from a given query and to have the user give feedback on those results. The system then uses that information, whether or not those results are relevant, to perform a new query and display more relevant results. Relevance feedback introduces important design choices, including, which operations should be performed automatically by the system and which should be user initiated and controlled, how documents in a collection are ranked and by whom/what, and how much interaction a user should have with the system.
Rationale
Relevance feedback refers to a system in which the user is involved in the retrieval process. From the initial query results a user selects a small set of documents that appear to be relevant to the query; the system then uses aspects derived from these selected relevant documents to recalibrate the original query. This revised query is then executed and a new set of results is returned. Documents from the original set can appear in the new results list, although they are likely to appear in a different rank order. Relevance feedback in its original form has been shown to be an effective mechanism for improving retrieval results in a variety of studies and settings. (Hearst, 1999)
The relevance information provided by the…