Sixth European Conference on Speech Communication and Technology
(EUROSPEECH'99)

Budapest, Hungary
September 5-9, 1999

Efficient Language Model Adaptation through MDI Estimation

Marcello Federico

ITC-irst - Centro per la Ricerca Scientifica e Tecnologica, Povo, Trento, Italy

This paper presents a method for n-gram language model adaptation based on the principle of minimum discrimination information. A background language model is adapted to fit constraints on its marginal distributions that are derived from new observed data. This work gives a different derivation of the model by Kneser et al.(1997) and extends its application to interpolated language models. The proposed method has been evaluated on an Italian 60K-word broadcast news task.


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Bibliographic reference.  Federico, Marcello (1999): "Efficient language model adaptation through MDI estimation", In EUROSPEECH'99, 1583-1586.