1. Learning Feature Mappings Using Evolutionary Computation
Konsta Koppinen
Tampere University of Technology
Tampere, Finland
ICSI Speech Lunch 1/27/04

2. 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

3. 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