ABSTRACT

The effectiveness and efficiency of an Information Retrieval (IRJ system depends on the quality of its indexing system. Indexing con be used in inverted file sysrerns or in cluster-based retrieval. In this article, new concept called tunable indexing is introduced. With tunable indexing rhe number of clusters of a documenr clusrering sysrern can. be varied l o any desired value. Also covered are the compuration of Term L)iscriminarion Value (TDV) with the cover coefficienr (CC) concepz and its use in tunable indexing. A set of erperimenxs has slrown the consistency between the CC based TDYs arrd rhe TDYs determined with the known methods. The main use of nrnable indexing has been observed in determining the paramerers of a clusrering sysrem. 1