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An LVCSR Based Reading Miscue Detection System with Knowledge of Reference and Error Patterns Dynamically Incorporated
Jiang Tonghai; Tang Ming; Liu Changliang; Ge Fengpei; Pan Fuping; Jiang, TH
2009
会议名称International Conference on Research Challenges in Computer Science
会议录名称ICRCCS 2009 - 2009 International Conference on Research Challenges in Computer Science
页码96-99
会议日期DEC 28-29, 2009
会议地点Shanghai, PEOPLES R CHINA
出版地10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
出版者2009 INTERNATIONAL CONFERENCE ON RESEARCH CHALLENGES IN COMPUTER SCIENCE, ICRCCS 2009
摘要

This paper constructs a reading miscue detection system based on conventional Large Vocabulary Continuous Speech Recognition (LVCSR) framework. In order to incorporate the knowledge of reference (what the reader ought to read) and some error patterns into the decoding process, two methods are proposed: Dynamic Interpolation of Language Model (DILM) and Dynamic Multiple Pronunciation Incorporation (DMPI). DILM dynamically interpolates the general language model based on analysis of reference and so restricts the active paths of decoding not too far away from the reference. It makes the recognition more accurate, which further improve the detection performance. DMPI dynamically adds some pronunciation variations into the search space to predict reading substitutions. It solves the confliction between the coverage of error predications and the perplexity the search space. The experimental results show that the proposed two methods can totally decrease EER by 14% relatively totally, from 46.4% to 39.8%.

关键词Call Reading Tutor Reading Miscues Lvcsr Multiple Pronunciation
主办者Int Comp Sci Soc, Intelligent Informat Technol Appl Res Assoc, Wuhan Univ Sci & Technol, S China Normal Univ
文献类型会议论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/2327
专题多语种信息技术研究室
通讯作者Jiang, TH
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi, Peoples R China;Xinjiang Publ Secur Dept, Urumqi, Peoples R China;Chinese Acad Sci, Inst Acoust, ThinkIT Speech Lab, Beijing, Peoples R China
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GB/T 7714
Jiang Tonghai,Tang Ming,Liu Changliang,et al. An LVCSR Based Reading Miscue Detection System with Knowledge of Reference and Error Patterns Dynamically Incorporated[C]. 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA:2009 INTERNATIONAL CONFERENCE ON RESEARCH CHALLENGES IN COMPUTER SCIENCE, ICRCCS 2009,2009:96-99.
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