International Journal of Computer & Organization Trends(IJCOT)
Keyword search is the most common application in data mining, for the fast search of keywords over the documents the search index method was introduced. The search index contains the keywords and the document list which is large in size. Several compression techniques introduced to reduce the size of the search index. In the compressed index it always needs to de-compressed during the document retrieval. The optimized inverted index uses the document Id's as interval lists which reduces the size of search index.