电子工程系

Department of Electronic Engineering 

Ji WU, Ph.D. Associate Professor

Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

Tel: +86-10-62781706

Fax: +86-10-62770317

E-mail: wuji_ee@tsinghua.edu.cn

Wu Ji was born in WuXi, JiangSu Province, China. He received his B.S degree and his Ph.D degree from the Department of Electronic Engineering, Tsinghua University, in 1996 and 2001 respectively. He is currently an associated professor and Vice Chairman of the Department of Electronic Engineering, Tsinghua University. From 2006, Prof. Wu is the director of Tsinghua-iFlyTek Joint Lab for Speech Technologies. And he now is the leader of TWG(Technical Work Group) of Speech Industry Alliance of China. His research interests include speech recognition, natural language processing, pattern recognition, machine learning and data mining. Prof. Wu has published 60 peer-reviewed papers. He has been serving as a standing committee member of National human-computer voice communication conference since 2009.  And he is also paper reviewer for several international and domestic journals and academic conferences.

Education background

1991-1996, Department of Electronic Engineering of Tsinghua, majoring in Radio Technology and Information System, Bachelor degree

1996-2001, Signal and information processing from Department of Electronic Engineering of Tsinghua, Ph.D. degree

 

Experience

Wu took the teaching position in Tsinghua(2001)

Concurrent Academic

Member of Steer Committee of NCMMSC(National Conference on Man-Machine Speech Communication), Aug. 2009 – current

Member of Technical Program Committee of ISCSLP2012,ISCSLP2010 and ISCSLP2008.

Member of Technical Program Committee of NCMMSC2013,NCMMSC2011,NCMMSC2009 and NCMMSC2007.

 

Social service

Leader of TWG(Technical Work Group) of Speech Industry Alliance of China, Aug. 2012 – current

Member of SWG(Standard Work Group) of Chinese Voice Interactive Technologies, MIIT, China, Apr. 2004 - current

 

Areas of Research Interests/ Research Projects

Speech Recognition and Man-Machine Interaction

Contend based Analysis and Indexing for Speech;

Natural Language Processing;

Data mining, Machine Learning and Pattern Recognition

 

Research Status

(1)NSFC  61170197   1/1/2012 – 12/30/2015  PI(PI: Wu Ji)

Auto Summarization for Spoken Documents

(2)Sub-Project of 863 Hi-Tech Key Project  2012AA011004   9/1/2012 – 12/30/2014

coPI of Sub-Project (PI: Wang Shengjin, coPI: Huang yongfeng, Wu Ji)

Subject: Integrated Management and Analysis Technologies on Massive Uncertain Heterogeneous Data.

Project: Platform and Application of Extraction, Integration, Analysis and Management for Massive Web Data in The Open Environment.

(3)Sub-Project of 863 Hi-Tech Key Project  2006AA010104   6/1/2006 – 10/30/2010

PI of Sub-Project (PI: Wu Ji)

Subject: The research on personalize speech synthesis on statistic modeling.

Project: Key technology research and application development for multilingual speech synthesis.

(4)863 Hi-Tech Project  2006AA01Z149   11/1/2006 – 12/30/2008

PI(PI: Wu Ji, co-PI: Zhijian OU)

Research on high performance content-based Speech Indexing Technology

(5)863 Hi-Tech Project  2001AA114071   10/1/2001 – 12/30/2003

PI(PI: Wu Ji, co-PI: Jiasong Sun)

Intelligence Platform for Chinese Speech Information Processing

(6)Director of LST          2/21/2006 – 6/30/2015

Director (Director: Wu Ji, Vice Director: Wang Zhiguo)

Tsinghua University(Department of Electronic Engineering)-AnHui USTC iFlytek Co., Ltd. Joint Laboratory for Speech Technologies.

Three contracts, each with 3 years and ¥5,000,000.

(7)Tecent R&D Project         2/15/2012 – 2/14/2013

PI (PI: Wu Ji)

Joint Research and Development for Speech Recognition

(8)Project from Beijing Samsung Telecom R&D Center      8/1/2012 – 12/30/2012

PI (PI: Wu Ji)

Text Database Collection and Language Model Training

(9)Project from Beijing Toshiba R&D Center       4/1/2004-5/31/2005

PI (PI: Wu Ji)

Research on Robust Speech Recognition Technologies

 

Honors And Awards

National Science and Technology Progress Award Second Class (the eighth of the group), China, 2011

Project: The Development Platform for Intelligent Voice Interaction Key Technologies and Applications

 

Academic Achievement

Journal Papers:

[1] X.-L. Zhang and J. Wu, “Linearithmic time sparse and convex maximum margin clustering,” IEEE Transactions on Systems, Man, and Cybernetics—Part B: Cybernetics, vol. 42, no.6, pp. 1669-1692, 2012.

[2] Wu Ji, Zhang Xiao-Lei. SPARSE KERNEL MAXIMUM MARGIN CLUSTERING. Source: NEURAL NETWORK WORLD, v 21, n 6, p 551-573.2011. (IDS Number: 879TT,EI: 20120614740409)

[3] Wu Ji, Zhang Xiaolei. Efficient multiple kernel support vector machine based voice activity detection, In: Proc. IEEE Signal Process Letters, 2011,18(8), pp466-469. (IDS Number: 783QM,EI: 20112714110530)

[4] Wu Ji, Zhang Xiaolei. An efficient voice activity detection algorithm by combining statistical model and energy detection, EURASIP Journal on Advances in Signal Processing, 2011,2011(1), pp18-27.(IDS Number: 819TL)

[5] Wu Ji, Zhang Xiaolei. Maximum margin clustering based statistical VAD with multiple observation compound feature, IEEE Signal Process. Lett., 2011,18(5), pp283-286. (IDS Number: 734LC, EI: 20111113757684)

[6] Li Wei, Wu Ji, Lv Ping. Query Expansion Based High Performance Chinese Voice Retrieval, Pattern Recognition and Artificial Intelligence, 2011,8, 24,(4),pp561-566. Language: Chinese. (EI: 20114114415342)

[7] Zhang Xiaolei, Wu Ji, Lv Ping. Support vector machine based VAD using multiple observation compound feature, Journal of Tsinghua University(Science and Technology) 2011, 51(9),pp1209-1214. Language: Chinese. (EI: 20114514493905)

[8] Su Tengrong, Wu Ji, Wang Zuoying. Acoustic Model Training Based on Spatial Correlation Transformation, Journal of Electronics & Information Technology, Journal of Electronics & Information Technology. 2010, 32(4), 1003-1007. Language: Chinese. (EI: 20102112949946)

[9] Su Tengrong, Wu Ji, Wang Zuoying. Spatial correlation transformation for speech recognition, Journal of Tsinghua University, v 49, n 10, p 1655-1659, October 2009. Language: Chinese. (EI: 20094612457047)

[10] Li Wei, Wu Ji, Wang Zhiguo. Fast lattice generation algorithm, Journal of Tsinghua University(Science and Technology). 2009, 49(S1), pp1254-1257. Language: Chinese.

[11] Qian Sheng, Lv Ping, Wu Ji. Maximum probability increase estimation method for fast Gaussian likelihood computations. Journal of Tsinghua University(Science and Technology). 2009, 49(S1), 1258-1261. Language: Chinese.

[12] Wang Zhiguo, Wu Ji, Wang Renhua, Dai Lirong. An Algorithm of Model Compensation Based on The Estimation of Additive Noise and Channel Function for Speech Recognition. ACTA ACUSTICA,2008,33(3), pp 238-243. Language: Chinese. (EI: 20082311304376)

[13] Hu Yanfang, Wu Ji, Liu Huixing. Speech/music Discrimination Based on A Modified Low Energy Ratio. Journal of Tsinghua University(Science and Technology). 2008,48(1), pp720-724. Language: Chinese. (EI: 20082811370592)

[14] Wu Ji, Xiao Xi, Xu Lin, Wang Zuoying. Hidden Markov Model Search Algorithm for Non-convex Duration distributions. Journal of Tsinghua University(Science and Technology). 2005,45(7), pp.924-927. Language: Chinese. (EI: 2005369347292)

[15] Wu Fengliang, Wu Ji, Wang Zuoying. Exponential Threshold Based Speech Endpoint Detection Method. Journal of Data Acquisition & Processing. 2005, 20(4), pp.385-389. Language: Chinese. (EI: 2006049664384)

[16] Chen Junyan, Wu Ji, Wang Xia. Robust Language Understanding Algorithm in Spoken Dialogue Systems. Journal of Tsinghua University(Science and Technology). 2005,45(1), pp21-24. Language: Chinese. (EI: 2005139014221)

[17] Ji Wu, Zuoying Wang. An Efficient Computation Algorithm in Mandarin Continuous Speech Recognition. Chinese Journal of Electronics, vol11, n1, 2002, pp44-47, (IDS Number: 516QH, EI: 2002156912926)

[18] Lv Ping, Wu Ji, Wang Zuoying, Lu Dajin. Rapid speaker adaptation for continuous speech recognition. Journal of Tsinghua University(Science and Technology). 2002, 42(7),pp.977-980. Language: Chinese. (EI: 2002427145372)

[19] Ji Wu, Zuoying Wang. A Decision Tree-Structured Algorithm of Speaker Adaptation Based on Gaussian Similarity Analysis. Chinese Journal of Electronics, 2001, 10(2): 166-169. (IDS Number: 428WU, EI: 2001256553266)

[20] Zuoying Wang, Ji Wu. A New Similarity Measure of Random Variables and Its Application to VQ for Speech Recognition. Chinese Journal of Electronics, 2000, 9(4),pp.448-452[4]. (IDS Number: 384TJ. EI: 2001015411506.)

[21] Wu Ji, Liu Feng, Wang Zuoying. Research on optimal algorithm of likelihood computation in continuous speech recognition. Journal of Tsinghua University(Science and Technology). 1999,39(5),pp.77-80.(EI: 2000215118517). Language: Chinese.

Conference Papers:

[1] Zhiyang He, Ping Lv, Wei Li, Wu Ji, A Synchronized Pruning Composition Algorithm of Weighted Finite State Transducers for Large Vocabulary Speech Recognition. the 8th International Symposium on Chinese Spoken Language Processing (ISCSLP2012) , Hongkong, 2012.12. pp11-15.

[2] Qinghua Wu, Zhang Xiao-Lei, Ping Lv, Wu Ji, Perceptual Similarity between Audio Clips and Feature Selection for Its Measurement. the 8th International Symposium on Chinese Spoken Language Processing (ISCSLP2012) , Hongkong, 2012.12. pp387-391.

[3] X. L. Zhang, J. Wu, Z. P. Chen, and P. Lv, “Optimized weighted decoding for error correcting output codes,” in Proceedings of the  International Conference on Acoustic, Speech, and Signal Processing (ICASSP), 2012, pp. 2101–2104.

[4] Wu Ji, He Zhiyang, Lv Ping. An Active Learning Approach to Task Adaptation,in Proc. Interspeech 2011, Florence, Italy, 2011, pp2597-2600.

[5] Wei Li, Ji Wu, Ping Lv. High Performance Chinese Spoken Term Detection Based on Term Expansion. ISCSLP 2010, Tainan, TaiWan, 2010, pp. 430-434. (EI: 20110713663225)

[6] Wenzhu SHEN, Ji WU and Wei LI. Web-Based Keyword Adapted Language Modeling for Keyword Spotting ISCSLP 2010, Tainan, TaiWan, 2010, pp. 251-255. (EI: 20110713663270)

[7] J. Wu, X. Zhang, and W. Li, “A New VAD Framework Using Statistical Model and Human Knowledge Based Empirical Rule,” in Proceedings of the 11th annual conference of the ISCA (INTERSPEECH 2010), Sept. 2010, pp. 3090–3093. (EI: 20112714117442)

[8] Wenzhu Shen, Roger Peng Yu, Frank Seide, Ji Wu. Automatic Punctuation Generation For Speech, In: Proc. IEEE Automatic Speech Recognition and Understanding Workshop(ASRU), Merano, Italy, 2009.12, p 586-589. (EI: 20101112773312)

[9] Tengrong Su, Ji Wu, Zuoying Wang, Jie Hao. Improvements on minimum covariance based spatial correlation transformation, In: ICASSP, Taipei, 2009.4, p4581-4584. (EI: 20093912339320)

[10] Tengrong Su,Ji Wu, Zuoying Wang. Spatial Correlation Transformation Based on Minimum Covariance, In: Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Las Vegas, USA, 2008,4. (EI: 20083811562338, ISTP : BHY47)

[11] Wei Li,Ji Wu,Zhiguo Wang. A Trellis Based Fast Lattice Generating Algorithm. In Proc. International Symposium on Chinese Spoken Language Processing(ISCSLP), Kunming, 2008,12, pp.189-192. (EI: 20091011939065,ISTP: BJA83)

[12] Zhiyang He,Zhiguo Wang,Wei Li,Ji Wu. A Combined Task Analysis Method for Data Selection in Mandarin Isolated Word Recognition System. In Proc. International Symposium on Chinese Spoken Language Processing(ISCSLP), Kunming, 2008,12, pp.213-216.(EI: 20091011940617, ISTP: BJA83)

[13] Zhiyang He,Wei Li,Ji Wu. Task analysis methods for data selection in task adaptation on Mandarin isolated word recognition. In: Proc. International Conference on Signal Processing (ICSP), Beijing, P.R.C, 2008,10. pp. 697-700. (EI: 20092612148926, ISTP: BLO26)

[14] Chi Zhang,Ji Wu,Xi Xiao, Zuoying Wang. Pronunciation Variation Modeling for Mandarin with Accent, In Proc. of Interspeech-ICSLP2006,Pittsburgh, Sep. 2006,pp.709-712. Language: Chinese. (EI: 20082511318873,ISTP: BLD40)

[15] Yizhou Wang, Ji Wu, Zuoying Wang. A two-dimensional robust algorithm based on Mel-bank Log-spectrum. In Proc of International Symposium on Communications and Information Technologies 2005, Beijing, pp.734-738.(EI: 20064310195136, ISTP: BDY20)

[16] Ye Tian, Ji Wu, Zuoying Wang, Dajin Lu. Fuzzy Clustering And Bayesian Information Criterion Based Threshold Estimation For Robust Voice Activity Detection. In: Proc of International Conference on Acoustics, Speech and Signal Processing(ICASSP). 2003. (EI: 2003397648772,ISTP:BX44W)

[17] Junyan Chen, Ji Wu, Zuoying Wang. A Chinese spoken dialogue system for train information. In: Proc of IEEE SMC’2003 [C]. Washington D.C., USA, 2003 (EI: 2003487750883,ISTP:BX83D)

[18] Ye Tian, Ji Wu, Zuoying Wang, Dajin Lu. Robust Noisy Speech Recognition with Adaptive Frequency Bank Selection. In: Proc of IEEE fourth International Conference on Multimodal Interfaces (ICMI'2002), Pittsburgh, 2002. (ISTP: BV52J)

[19] Ji Wu, Zuoying Wang. Gassian Similarity Analysis and Its Application in Speaker Adaptation. In: Proceeding of ICSLP2000, IV. pp.370-373.