Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06F
ELECTRIC DIGITAL DATA PROCESSING
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G06F18/21
Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
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G06F18/213
Feature extraction, e.g. by transforming the feature space; Summarisation; Mappings, e.g. subspace methods
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G06F18/2135
based on approximation criteria, e.g. principal component analysis
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