Akira Ushioda
Fujitsu
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Publication
Featured researches published by Akira Ushioda.
international conference on computational linguistics | 1996
Akira Ushioda
This paper describes a data-driven method for hierarchical clustering of words in which a large vocabulary of English words is clustered bottom-up, with respect to corpora ranging in size from 5 to 50 million words, using a greedy algorithm that tries to minimize average loss of mutual information of adjacent classes. The resulting hierarchical clusters of words are then naturally transformed to a bit-string representation of (i.e. word bilts for) all the words in the vocabulary. Introducing word bits into the ATR Decision-Tree POS Tagger is shown to significantly reduce the tagging error rate. Portability of word bits from one domain to another is also disscussed.
Archive | 1998
Akira Ushioda; Masaru Fuji
Archive | 2001
Akira Ushioda; Masaru Fuji; Tatsuo Yamashita
Archive | 2001
Akira Ushioda; Koji Tsukamoto
Archive | 1997
Akira Ushioda
Archive | 2001
Akira Ushioda; Masaru Fuji; Tatsuo Yamashita
Archive | 1985
Nagaaki Koshino; Miyozo Maeda; Yasuyuki Goto; Itaru Shibata; Kenichi Utsumi; Akira Ushioda; Ken-ichi Itoh; Kozo Sueishi
Archive | 1998
Masaru Fuji; Akira Ushioda
international conference on computational linguistics | 1996
Akira Ushioda
Archive | 2006
Masaru Fuji; Akira Ushioda; Tomoki Nagase; Akinari Masuyama
