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This paper presents an improved spoken term detection strategy, which integrated with a novel phoneme confusion matrix and an improved word\u2010level minimum classification error (MCE) training method. The first technique is presented to improve spoken term detection rate while the second one is adopted to reject false accepts. On mandarin conversational telephone speech (CTS), the proposed methods reduce the equal error rate (EER) by 8.4% in relative.<\/jats:p>","DOI":"10.1155\/2012\/548341","type":"journal-article","created":{"date-parts":[[2012,3,26]],"date-time":"2012-03-26T21:15:17Z","timestamp":1332796517000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optimization of Spoken Term Detection System"],"prefix":"10.1155","volume":"2012","author":[{"given":"Chuanxu","family":"Wang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pengyuan","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,3,26]]},"reference":[{"key":"e_1_2_7_1_2","doi-asserted-by":"crossref","unstructured":"MoreauN. KimH.-G. andSikoraT. Phonetic confusion based document expansion for spoken document retrieval Proceedings of the 8th International Conference on Spoken Language Processing (ICSLP \u203204) October 2004 Jeju Island Korea.","DOI":"10.21437\/Interspeech.2004-44"},{"key":"e_1_2_7_2_2","doi-asserted-by":"crossref","unstructured":"LiuM. XuB. HuangT. DengY. andLiC. Mandarin accent adaptation based on context-independent\/context-dependent pronunciation modeling Proceedings of the the IEEE Interntional Conference on Acoustics Speech and Signal Processing (ICASSP \u203200) June 2000 1025\u20131028 2-s2.0-0033719637.","DOI":"10.1109\/ICASSP.2000.859137"},{"key":"e_1_2_7_3_2","doi-asserted-by":"crossref","unstructured":"GaoJ. ZhaoQ. YanY. andShaoJ. Efficient system combination for syllable-confusion-network-based Chinese spoken term detection Proceedings of the 6th International Symposium on Chinese Spoken Language Processing (ISCSLP \u203208) December 2008 366\u2013369 2-s2.0-60849128830 https:\/\/doi.org\/10.1109\/CHINSL.2008.ECP.103.","DOI":"10.1109\/CHINSL.2008.ECP.103"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/78.175747"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.specom.2003.11.002"},{"key":"e_1_2_7_6_2","unstructured":"LiangJ. MengM. WangX. DingP. andXuB. An improved mandarin keyword spotting system using MCE training and context-enhanced verification Proceedings of the IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP \u203206) May 2006 I1145\u2013I1148 2-s2.0-33947629218."},{"key":"e_1_2_7_7_2","doi-asserted-by":"crossref","unstructured":"HoriT. HetheringtonI. L. HazenT. J. andGlassJ. R. 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