Selective lexicon optimization

Pattern-Responsive Lexicon Optimization

In this paper, we show that current interpretations of Lexicon Optimization (Prince and Smolensky 1993), in particular that of Archiphonemic Underspecification (Inkelas 1995), incorrectly predict the distribution of underspecification in lexical entries. We present cases from three vowel harmony languages in which speakers treat harmonic and disharmonic roots differently under reduplication. Th...

Towards discriminative lexicon optimization

A lot of work has been done in deriving the pronunciation dictionary automatically from training data. These attempts focussed mainly on maximum likelihood or similar techniques. Due to the complexity and variability of the pronunciation process it is di cult to nd an adequate pronunciation model. The model will deviate from the truth. Hence, the application of maximum likelihood techniques is ...

Lexicon Optimization in Languages without alternations

Lexicon Optimization for Chinese Language Modeling

In this paper, we present an approach to lexicon optimization for Chinese language modeling. The method is an iterative procedure consisting of two phases, namely lexicon generation and lexicon pruning. In the first phase, we extract appropriate new words from a very large training corpus using statistical approaches. In the second phase, we prune the lexicon to a preset memory limitation using...

Lexicon optimization for dutch speech recognition in spoken document retrieval

In this paper, ongoing work concerning the language modelling and lexicon optimization of a Dutch speech recognition system for Spoken Document Retrieval is described: the collection and normalization of a training data set and the optimization of our recognition lexicon. Effects on lexical coverage of the amount of training data, of decompounding compound words and of different selection metho...