Answering Why-not Questions on Reverse Top-k Queries

• Main Authors: GAO, Yunjun, LIU, Qing, CHEN, Gang, ZHENG, Baihua, ZHOU, Linlin
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2015
• Subjects: Ranked queries; algorithms; products; Computer Sciences; Databases and Information Systems
• Online Access: https://ink.library.smu.edu.sg/sis_research/2895; https://ink.library.smu.edu.sg/context/sis_research/article/3895/viewcontent/ZhengBH_2015_vldb_AnsweringWhyNot.pdf
• Institution: Singapore Management University

Why-not questions, which aim to seek clarifications on the missing tuples for query results, have recently received considerable attention from the database community. In this paper, we systematically explore why-not questions on reverse top-k queries, owing to its importance in multi-criteria decis...