|
ACL Anthology Network (All About NLP) (beta) The Association Of Computational Linguistics Anthology Network |
| ACL ID | P99-1022 |
|---|---|
| Title | Dynamic Nonlocal Language Modeling Via Hierarchical Topic-Based Adaptation |
| Venue | Annual Meeting of the Association of Computational Linguistics |
| Session | Main Conference |
| Year | 1999 |
| Authors |
|
This paper presents a novel method of generating and applying hierarchical, dynamic topic-based lan- guage models. It proposes and evaluates new clus- ter generation, hierarchical smoothing and adaptive topic-probability estimation techniques. These com- bined models help capture long-distance lexical de- pendencies. °Experiments on the Broadcast News corpus show significant improvement in perplexity (10.5% overall and 33.5% on target vocabulary).