@InProceedings{Beilig2009_311,
<br/>   author = {Michael Beilig and Diane Hirschfeld and Oliver Jokisch and Uwe Koloska},
<br/>   booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2009},
<br/>   title = {Training of HMMs for Pronunciation Error Detection – Crosslingual Bootstrapping vs. Flatstart Training},
<br/>   year = {2009},
<br/>   editor = {Rüdiger Hoffmann},
<br/>   month = mar,
<br/>   pages = {372--379},
<br/>   publisher = {TUDpress, Dresden},
<br/>   abstract  = {This paper presents an evaluation study of hidden markov model (HMM)
training as part of the ongoing EURONOUNCE project that intends an Intelligent
Language Tutoring System (ILTS). The Core functionality of the system is a computer
assisted pronunciation trainer (CAPT), integrating audio–visual feedback
based on a pronunciation error detection on the phone–level. In a first step the
application will concentrate on Slavonic languages and German. Most of current
approaches solely use hidden markov models (HMMs) of the language to learn
(target language models). One characteristic of our approach is to additionally use
source language as well as intermediate acoustical models to detect and rate pronunciation
errors. The other specific is that our methods to achieve this goal are
directly based on knowledge of linguistic experts and experiences of pronunciation
training. So the extended acoustic model inventory is used by an expert to formulate
pronunciation error hypotheses for each of the training utterances strongly
related to the source–target language (L1–L2) pair just as to specific learning levels.
As an initial study a cross language bootstrapping approach for German as sourceand
Polish as target–language was implemented to train a native Polish monophone
model set. By this way, the authors approximate the break–even amount of data, at
which the cross language bootstrapping can outperform the flatstart training procedure.},
<br/>   isbn = {978-3-941298-31-6},
<br/>   issn = {0940-6832},
<br/>   keywords = {Sprache und Didaktik},
<br/>   url = {https://www.essv.de/pdf/2009_372_379.pdf},
<br/>}