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Method for indexing feature vector data space

  • US 6,917,927 B2
  • Filed: 02/15/2001
  • Issued: 07/12/2005
  • Est. Priority Date: 08/21/2000
  • Status: Expired due to Fees
First Claim
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1. A computer-implemented method for indexing feature vector data space comprising the step of:

  • (a) adaptively approximating feature vectors on the basis of statistical distribution of feature vector data in the feature vector data space, wherein the step (a) further comprises the steps of;

    (a-1) measuring the statistical distribution of the feature vector data in the feature vector data space;

    (a-2) estimating marginal distribution of the feature vector data using the statistical distribution;

    (a-3) dividing the estimated marginal distribution into a plurality of grids in which a probability of disposing the feature vector data in each grid is uniform; and

    (a-4) indexing the feature vector data space using the divided grids.

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