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A Dimensionality Reduction Method for Efficient Search of High-Dimensional Databases

Zaher AGHBARI, Kunihiko KANEKO, Akifumi MAKINOUCHI

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Summary :

In this paper, we present a novel approach for efficient search of high-dimensional databases, such as video shots. The idea is to map feature vectors from the high-dimensional feature space into a point in a low-dimensional distance space. Then, a spatial access method, such as an R-tree, is used to cluster these points based on their distances in the low-dimensional space. Our mapping method, called topological mapping, guarantees no false dismissals in the result of a query. However, the result of a query might contain some false alarms. Hence, two refinement steps are performed to remove these false alarms. Comparative experiments on a database of video shots show the superior efficiency of the topological mapping method over other known methods.

Publication
IEICE TRANSACTIONS on Information Vol.E86-D No.6 pp.1032-1041
Publication Date
2003/06/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Databases

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