Efficient Refining Of Why-Not Questions on Top-K Queries
Journal Title: IOSR Journals (IOSR Journal of Computer Engineering) - Year 2015, Vol 17, Issue 3
Abstract
Abstract: After decades of effort working on database performance, the quality and the usability of databasesystems have received more attention in recent years. In particular, answering the why-not questions after asearch is made has become more important. In this project, the problem of answering why-not questions on topkqueries and refining the user query is solved. Generally many users love to pose those kinds of queries whenthey are making multi-criteria decisions. However, they would also want to know why their expected answersdo not show up in the query results. The different algorithms are developed to answer such why-not questionsefficiently. Top-K dominating questions are those which have more than one or two results. When this caseoccurs, the result is ordered according to highest ranking among the records. A search is made and result isdisplayed, if the expected tuple does not appear then user raises a why-not query. This query is refined usingalgorithm and then the result is calculated. A penalty function is added such that the result can be returnedefficiently and without any fault.
Authors and Affiliations
P. Haripriya , J. Jegan Amarnath
Keywords
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