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Similarity Search in Arbitrary Subspaces

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Similarity Search in Arbitrary Subspaces. In image databases, each image is ... feature space, our work aims to answer similarity queries in arbitrary subspaces ... – PowerPoint PPT presentation

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Title: Similarity Search in Arbitrary Subspaces


1
Similarity Search in Arbitrary Subspaces
Xiang Lian, PhD Candidate, and Lei Chen,
Assistant Professor
xlian, leichen_at_cse.ust.hk
Sponsored by MSRA Internet Services Theme
Invitation Award
  • In image databases, each image is represented by
    a d-dimensional feature vector
  • A similarity query retrieves images whose feature
    vectors are within?? distance from a
    user-specified query vector
  • Instead of searching in the full feature space,
    our work aims to answer similarity queries in
    arbitrary subspaces

feature vectors
images
query vector



subspace
1 Xiang Lian and Lei Chen. Similarity Search in
Arbitrary Subspaces under Lp-Norm. In ICDE,
2008. 2 Xiang Lian and Lei Chen. A General Cost
Model for Dimensionality Reduction in High
Dimensional Spaces. In ICDE, 2007.
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