Learning Feature Mappings Using Evolutionary Computation

Konsta KoppinenTampere University of Technology

Tampere, FinlandICSI Speech Lunch 1/27/04

Overview

Labeledspeech

Feature pool:-mel-band energy-cepstral coeff-harmonicity-…

ax-h

sey

l v

Sparse neural network

b d e f ey a jh s zPhonetic target neurons

• 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

Neural Network Training

0.10.2

0.10.7