Sixth International Conference on Spoken Language Processing
(ICSLP 2000)

Beijing, China
October 16-20, 2000

Data-Driven Importance Analysis of Linguistic and Phonetic Information

Achim F. Müller (1,3), Jianhua Tao (1,2), Rüdiger Hoffmann (3)

(1) Siemens Corporate Technology, Munich, Germany
(2) Tsinghua University, Beijing, China
(3) Dresden University of Technology, Germany

In this paper the weight decay concept known from neural network theory is applied to the two modules involved in prosody generation within our text-to-speech system Papageno. Both modules are based on neural networks (NN). Preprocessing layers are inserted connected to the inputs of specialized NN architectures via diagonal weight matrices. The weight decay concept is applied to the weights of these diagonal weight matrices. This allows an importance analysis of the used input parameters in the context of the used NN architectures.

In the symbolic prosody module the importance for phrase break prediction of part-of-speech (POS) tags could be evaluated Further, the necessary length of a POS context window could be analyzed and optimized.

For fO-generation for Mandarin language an importance analysis of the phonological information could be performed. The importance analysis led to an optimized input feature set reducing the squared error of the used NN architecture.

Full Paper

Bibliographic reference.  Müller, Achim F. / Tao, Jianhua / Hoffmann, Rüdiger (2000): "Data-driven importance analysis of linguistic and phonetic information", In ICSLP-2000, vol.2, 75-78.