NDLI: Finding superior skyline points for multidimensional recommendation applications

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Finding superior skyline points for multidimensional recommendation applications

Content Provider	Springer Nature Link
Author	Yang, Jing Fung, Gabriel Pui Cheong Lu, Wei Zhou, Xiaofang Chen, Hong Du, Xiaoyong
Copyright Year	2011
Abstract	In a typical Web recommendation system, objects are often described by many attributes. It also needs to serve many users with a diversified range of preferences. In other words, it must be capable to efficiently support high dimensional preference queries that allow the user to explore the data space effectively without imposing specific preference weightings for each dimension. The skyline query, which can produce a set of objects guaranteed to contain all top ranked objects for any linear attribute preference combination, has been proposed to support this type of recommendation applications. However, it suffers from the problem known as ‘dimensionality curse’ as the size of skyline query result set can grow exponentially with the number of dimensions. Therefore, when the dimensionality is high, a large percentage of objects can become skyline points. This problem makes such a recommendation system less usable for users. In this paper, we propose a stronger type of skyline query, called core skyline query, that adopts a new quality measure called vertical dominance to return only an interesting subset of the traditional skyline points. An efficient query processing method is proposed to find core skyline points using a novel indexing structure called Linked Multiple B’-trees (LMB). Our approach can find such superior skyline points progressively without the need of computing the entire set of skyline points first.
Starting Page	33
Ending Page	60
Page Count	28
File Format	PDF
ISSN	1386145X
Journal	World Wide Web
Volume Number	15
Issue Number	1
e-ISSN	15731413
Language	English
Publisher	Springer US
Publisher Date	2011-03-04
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	preference query recommendation systems high dimensional data vertical dominance core skyline points linked multiple B’-tree Operating Systems Database Management Information Systems Applications (incl. Internet)
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software Hardware and Architecture

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