Ananlada Chotimongkol


2010

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Online Temporal Language Model Adaptation for a Thai Broadcast News Transcription System
Kwanchiva Saykham | Ananlada Chotimongkol | Chai Wutiwiwatchai
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

This paper investigates the effectiveness of online temporal language model adaptation when applied to a Thai broadcast news transcription task. Our adaptation scheme works as follow: first an initial language model is trained with broadcast news transcription available during the development period. Then the language model is adapted over time with more recent broadcast news transcription and online news articles available during deployment especially the data from the same time period as the broadcast news speech being recognized. We found that the data that are closer in time are more similar in terms of perplexity and are more suitable for language model adaptation. The LMs that are adapted over time with more recent news data are better, both in terms of perplexity and WER, than the static LM trained from only the initial set of broadcast news data. Adaptation data from broadcast news transcription improved perplexity by 38.3% and WER by 7.1% relatively. Though, online news articles achieved less improvement, it is still a useful resource as it can be obtained automatically. Better data pre-processing techniques and data selection techniques based on text similarity could be applied to the news articles to obtain further improvement from this promising result.

2008

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Acquiring Domain-Specific Dialog Information from Task-Oriented Human-Human Interaction through an Unsupervised Learning
Ananlada Chotimongkol | Alexander Rudnicky
Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing

2005

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Using Semantic and Syntactic Graphs for Call Classification
Dilek Hakkani-Tür | Gokhan Tur | Ananlada Chotimongkol
Proceedings of the ACL Workshop on Feature Engineering for Machine Learning in Natural Language Processing

1998

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Combining Trigram and Winnow in Thai OCR Error Correction
Surapant Meknavin | Boonserm Kijsirikul | Ananlada Chotimongkol | Cholwich Nuttee
36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2

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Combining Trigram and Winnow in Thai OCR Error Correction
Surapant Meknavin | Boonserm Kijsirikul | Ananlada Chotimongkol | Cholwich Nuttee
COLING 1998 Volume 2: The 17th International Conference on Computational Linguistics