Learning Feature Mappings Using Evolutionary Computation

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Presentation transcript:

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 0.1 0.7 0.1