Automatic Speech Recognition with Very Large Conversational Finnish and Estonian Vocabularies

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Original languageEnglish
Pages (from-to)2085-2097
Number of pages13
JournalIEEE/ACM Transactions on Audio, Speech, and Language Processing
Volume25
Issue number11
Early online date23 Aug 2017
StatePublished - Nov 2017
MoE publication typeA1 Journal article-refereed

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Abstract

Today, the vocabulary size for language models in large vocabulary speech recognition is typically several hundreds of thousands of words. While this is already sufficient in some applications, the out-of-vocabulary words are still limiting the usability in others. In agglutinative languages the vocabulary for conversational speech should include millions of word forms to cover the spelling variations due to colloquial pronunciations, in addition to the word compounding and inflections. Very large vocabularies are also needed, for example, when the recognition of rare proper names is important.

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