发明名称 |
SYSTEM AND METHOD FOR USING META-DATA DEPENDENT LANGUAGE MODELING FOR AUTOMATIC SPEECH RECOGNITION |
摘要 |
Disclosed are systems and methods for providing a spoken dialog system using meta-data to build language models to improve speech processing. Meta-data is generally defined as data outside received speech; for example, meta-data may be a customer profile having a name, address and purchase history of a caller to a spoken dialog system. The method comprises building tree clusters from meta-data and estimating a language model using the built tree clusters. The language model may be used by various modules in the spoken dialog system, such as the automatic speech recognition module and/or the dialog management module. Building the tree clusters from the meta-data may involve generating projections from the meta-data and further may comprise computing counts as a result of unigram tree clustering and then building both unigram trees and higher-order trees from the meta-data as well as computing node distances within the built trees that are used for estimating the language model.
|
申请公布号 |
CA2486128(C) |
申请公布日期 |
2011.08.23 |
申请号 |
CA20042486128 |
申请日期 |
2004.10.27 |
申请人 |
AT&T CORP. |
发明人 |
BACCHIANI, MICHIEL A. U.;ROARK, BRIAN E. |
分类号 |
G06F17/20;G10L15/06;G10L15/18;G10L15/22 |
主分类号 |
G06F17/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|