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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Iso, K.-I. |
| Copyright Year | 2009 |
| Description | Author affiliation: Yahoo! JAPAN Research, Yahoo Japan Corporation, Midtown Tower, 9-7-1 Akasaka, Minato-ku, Tokyo 107-6211 Japan (Iso, K.-I.) |
| Abstract | We describe the implementation of a scalable architecture for audio indexing, in which topic-dependent language models (LMs) were trained on web pages categorized in a portal web directory and stored on distributed servers. Input speech was decoded in parallel on servers that each had an individual topic LM. From the decoders' outputs, an optimal hypothesis was chosen for each utterance by a topic-selection criterion minimizing an energy function with three terms: likelihood scores for the utterances; keyword co-occurrence statistics to measure the long-distance correlation; and web-based hypothesis verification scores, which penalize misrecognized trigrams through web search results. Experimental results showed that the proposed approach outperformed the baseline topic-independent system by 6.0% absolutely (20.0% relatively) in character accuracy. |
| Starting Page | 826 |
| Ending Page | 829 |
| File Size | 212615 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424442904 |
| ISSN | 19457871 |
| DOI | 10.1109/ICME.2009.5202622 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Indexing System testing Decoding Web search Speech recognition Linear discriminant analysis Scalability Poles and towers Service oriented architecture Web pages utterance verification audio indexing topic language models web search |
| Content Type | Text |
| Resource Type | Article |
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