Publication detail

Study of Large Data Resources for Multilingual Training and System Porting

GRÉZL, F. EGOROVA, E. KARAFIÁT, M.

Original Title

Study of Large Data Resources for Multilingual Training and System Porting

Type

conference paper

Language

English

Original Abstract

This study investigates the behavior of a feature extraction neural network model trained on a large amount of single language data ("source language") on a set of under-resourced target languages. The coverage of the source language acoustic space was changed in two ways: (1) by changing the amount of training data and (2) by altering the level of detail of acoustic units (by changing the triphone clustering). We observe the effect of these changes on the performance on target language in two scenarios: (1) the source-language NNs were used directly, (2) NNs were first ported to target language. The results show that increasing coverage as well as level of detail on the source language improves the target language system performance in both scenarios. For the first one, both source language characteristic have about the same effect. For the second scenario, the amount of data in source language is more important than the level of detail. The possibility to include large data into multilingual training set was also investigated. Our experiments point out possible risk of over-weighting the NNs towards the source language with large data. This degrades the performance on part of the target languages, compared to the setting where the amounts of data per language are balanced.

Keywords

Stacked Bottle-Neck; feature extraction; multilingual training; large data; Fisher database

Authors

GRÉZL, F.; EGOROVA, E.; KARAFIÁT, M.

Released

9. 5. 2016

Publisher

Elsevier Science

Location

Yogyakarta

ISBN

1877-0509

Periodical

Procedia Computer Science

Year of study

2016

Number

81

State

Kingdom of the Netherlands

Pages from

15

Pages to

22

Pages count

8

URL

http://www.sciencedirect.com/science/article/pii/S1877050916300382

BibTex

@inproceedings{BUT130953,
  author="František {Grézl} and Ekaterina {Egorova} and Martin {Karafiát}",
  title="Study of Large Data Resources for Multilingual Training and System Porting",
  booktitle="Procedia Computer Science",
  year="2016",
  journal="Procedia Computer Science",
  volume="2016",
  number="81",
  pages="15--22",
  publisher="Elsevier Science",
  address="Yogyakarta",
  doi="10.1016/j.procs.2016.04.024",
  issn="1877-0509",
  url="http://www.sciencedirect.com/science/article/pii/S1877050916300382"
}