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Learning Feature Mappings Using Evolutionary Computation. Konsta Koppinen Tampere University of Technology Tampere, Finland ICSI Speech Lunch 1/27/04. Overview. l. v. s. Labeled speech. ey. ax-h. Feature pool: -mel-band energy -cepstral coeff -harmonicity -….
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Learning Feature Mappings Using Evolutionary Computation Konsta Koppinen Tampere University of Technology Tampere, Finland ICSI Speech Lunch 1/27/04
Overview l v s Labeled speech ey ax-h Feature pool: -mel-band energy -cepstral coeff -harmonicity -… Sparse neural network Phonetic target neurons b d e f ey a jh s z
Neural Network Training • Training using evolutionary algorithms • mutation • change weight • add/remove neuron • add/remove connection • crossover • Evaluation using frame-level phonetic targets • estimation of performance using sampling • penalty for complexity of network 0.2 0.7 0.1 0.1
