Education

• 2004 Ph.D. Purdue University, Electrical and Computer Engineering
• 2000 M.S. Tsinghua University, Electrical Engineering
• 1997 B.S. Tsinghua University, Electrical Engineering

Employment

• 2005/09-present Assistant Professor, University of Texas at Dallas, Computer Science
• 2004/12-2005/08 PostDoc Research Fellow, International Computer Science Institute (ICSI), Berkeley
• 2002/07-2004/12 Research Associate, ICSI Berkeley
• 2000/08-2004/12 Research Assistant, Purdue University

Publications

My Ph.D. thesis "Structural Event Detection for Rich Transcription of Speech " [pdf]

Journal Papers

• Mari Ostendorf, Benoit Favre, Ralph Grishman, Dilek Hakkani-Tur, Mary Harper, Dustin Hillard, Julia Hirschberg, Heng Ji, Jeremy Kahn, Yang Liu, Sameer Maskey, Evgeny Matusov, Hermann Ney, Andrew Rosenberg, Elizabeth Shriberg, Weng Wang, and Chuck Wooters, "Speech Segmentation and Spoken Document Processing", IEEE Signal Processing Magazine, V25(3), Pages 59-69, 2008.
  
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, Dustin Hillard, Mari Ostendorf, Mary Harper, "Enriching Speech Recognition with Automatic Detection of Sentence Boundaries and Disfluencies", IEEE Transactions on Audio, Speech, and Language Processing, V14(5), pp 1526-1540, September, 2006. [pdf]
• Yang Liu, Nitesh Chawla, Mary Harper, Elizabeth Shriberg, and Andreas Stolcke, "A Study in Machine Learning from Imbalanced Data for Sentence Boundary Detection in Speech ", Computer Speech and Language, V20(4), pp 468-494, 2006. [pdf]
• Yang Liu, Mary Harper, Michael Johnson, and Leah Jamieson, "The Effect of Pruning and Compression on Graphical Representations of the Output of a Speech Recognizer", Computer Speech and Language, Vol. 7, No. 4, pp. 329-356, October 2003. [pdf]

Peer-reviewed Conferences and Workshops

• Feifan Liu and Yang Liu, "Correlation between ROUGE and Human Evaluation of Extractive Meeting Summaries", ACL-HLT, 2008. [pdf]
  
• Fei Liu and Yang Liu, "What Are Meeting Summaries? An Analysis of Human Extractive Summaries", SigDial 2008. [pdf]
  
• Yang Liu and Shasha Xie, "Impact of Automatic Sentence Segmentation on Meeting Summarization", ICASSP, 2008. [pdf]
  
• Shasha Xie and Yang Liu, "Using Corpus and Knowledge-based Similarity Measure in Maximum Marginal Relevance for Meeting Summarization", ICASSP, 2008. [pdf]
  
• Yang Liu and Feifan Liu, "Unsupervised Language Model Adaptation via Topic Modeling Based on Named Entity Hypotheses", ICASSP, 2008. [pdf]
  
• Feifan Liu and Yang Liu, " Soundbite Identification Using Reference and Automatic Transcripts of Broadcast News Speech", ASRU, 2007.
  
• Jachym Kolar, Yang Liu, and Elizabeth Shriberg, "Speaker Adaptation of Language Models for Automatic Dialog Act Segmentation of Meetings" Interspeech, 2007.
  
• Matthew Benton, Liz Dockendorf, Wenhua Jin, Yang Liu, and Jerry Edmondson, "The Continuum of Speech Rhythem: Computational Testing of Speech Rhythm of Large Corpora from Natural Chinese and English Speech", ICPhS, 2007.  [pdf]
  
• Feifan Liu and Yang Liu, "Unsupervised Language Model Adaptation Incorporating Named Entity Information", ACL, 2007.  [pdf]
  
• Feifan Liu and Yang Liu, "Look Who is Talking: Soundbite Speaker Name Recognition in Broadcast News Speech", NAACL-HLT, 2007.  [pdf]
  
• Yang Liu and Elizabeth Shriberg, "Comparing Evaluation Metrics for Sentence Boundary Detection",  ICASSP, 2007. [pdf]
  
• Yang Liu, "Using SVM and Error-correcting Codes for Multiclass Dialog Act Classification in Meeting Corpus", Interspeech, 2006. [pdf]
  
• Matthias Zimmermann, Dilek H. Tur, James Fung, Nikki Mirghafori, Luke Gottlieb, Elizabeth Shriberg, and Yang Liu, "The ICSI+ Multi-Lingual Sentence Segmentation  System", Interspeech 2006. [pdf]
  
• Jachym Kolar, Elizabeth Shriberg, Yang Liu, "On Speaker-Specific Prosodic Models for Automatic Dialog Act Segmentation of Multi-Party Meetings", Interspeech 2006. [pdf]
  
• Jachym Kolar, Elizabeth Shriberg, Yang Liu, "Using Prosody for Automatic Sentence Segmentation of Multi-Party Meetings", International Conference on Text, Speech, and Dialogue (TSD), Czech, 2006. [pdf]
  
• John Hale, Izhak Shafran, Lisa Yung, Bonnie Dorr, Mary Harper, Anna Krasnyanskaya, Matthew Lease, Yang Liu, Brian Roark, Matthew Snover, and Robin Stewart, "PCFGs with Syntactic and Prosodic Indicators of Speech Repairs", ACL 2006. [pdf]
  
• Yang Liu, "Initial Study on Automatic Identification of Speaker Role in Broadcast News Speech", HLT/NAACL (short paper), 2006. [pdf]
  
• Robin Stewart, Andrea Danyluk, Yang Liu, "Off Topic Detection in Conversational Speech", Workshops on Analyzing conversations in Text and Speech, at HLT/NAACL, 2006. [pdf]
  
• Brian Roark, Yang Liu, Mary Harper, Robin Stewart, Matthew Lease, Matthew Snover, Izhak Shafran, Bonnie Dorr, John Hale, Anna Krasnyanskaya, and Lisa Yung, "Reranking for Sentence Boundary Detection in Conversational Speech", ICASSP 2006. [pdf]
  
• Brian Roark, Mary Harper, Eugene Charniak, Bonnie Dorr, Mark Johnson, Jeremy Kahn, Yang Liu, Mari Ostendorf, John Hale, Anna Krasnyanskaya, Matt Lease, Izhak Shafran, Matt Snover, Robin Stewart, and Lisa Yung, "Sparseval: Evaluation Metrics for Parsing Speech", LREC 2006. [pdf]
  
• Ann Bies, Stephanie Strassel, Haejoong Lee, Kazuaki Maeda, Seth Kulick, Yang Liu, Mary Harper, and Matthew Lease, "Linguistic Resources for Speech Parsing", LREC 2006. [pdf]
  
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, and Mary Harper, "Comparing HMM, Maximum Entropy, and Conditional Random Fields for Disfluency Detection ", Interspeech, 2005. [pdf]
• Anand Venkataraman, Yang Liu, Elizabeth Shriberg, and Andreas Stolcke, "Does Active Learning Help Automatic Dialog Act Tagging in Meeting Data? ", Interspeech, 2005. [pdf]
• Matthias Zimmermann, Yang Liu, Elizabeth Shriberg, and Andreas Stolcke, "A* Based Segmentation and Classification of Dialog Acts in Multiparty Meetings ", ASRU 2005. [pdf]
• Matthias Zimmermann, Yang Liu, Elizabeth Shriberg, and Andreas Stolcke, "Toward Joint Segmentation and Classification of Dialog Acts in Multiparty Meetings ", MLMI workshop, 2005. [pdf]
• Yang Liu, Andreas Stolcke, Elizabeth Shriberg, and Mary Harper, "Using Conditional Random Fields For Sentence Boundary Detection in Speech", ACL 2005. [pdf]
• Jeremy Ang, Yang Liu, and Elizabeth Shriberg, "Automatic Dialog Act Segmentation and Classification in Multiparty Meetings", ICASSP 2005. [pdf]
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, Barbara Peskin, Jeremy Ang, Dustin Hillard, Mari Ostendorf, Marcus Tomalin, Phil Woodland, and Mary Harper, "Structural Metadata Research in the EARS Program ", Invited paper. ICASSP 2005. [pdf]
• Yang Liu, Andreas Stolcke, Mary Harper, and Elizabeth Shriberg, "Comparing and Combining Generative and Posterior Probability Models: Some Advances in Sentence Boundary Detection in Speech", EMNLP 2004. [pdf]
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, Dustin Hillard, Mari Ostendorf, Barbara Peskin, and Mary Harper, "The ICSI-SRI-UW Metadata Extraction System", ICSLP 2004. [pdf]
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, and Mary Harper, "Using Machine Learning to Cope with Imbalanced Classes in Natural Speech: Evidence from Sentence Boundary and Disfluency Detection", ICSLP 2004. [pdf]
• Lei Chen, Yang Liu, Mary Harper, and Elizabeth Shriberg, "Multimodal Model Integration for Sentence Unit Detection", ICMI 2004. [pdf]
• Lei Chen, Yang Liu, Eduardo Maia, and Mary Harper, "Evaluating Factors Impacting the Accuracy of Forced Alignments in a Multimodal Corpus", LREC 2004. [pdf]
• Dustin Hillard, Mari Ostendorf, Andreas Stolcke, Yang Liu, and Elizabeth Shriberg, "Improving Automatic Sentence Boundary Detection with Confusion Networks", HLT/NAACL 2004. [pdf]
• Yang Liu, Elizabeth Shriberg, and Andreas Stolcke, "Automatic Disfluency Identification in Conversational Speech Using Multiple Knowledge Sources", EuroSpeech 2003. [pdf]
• Yang Liu, "Word Fragment Identification Using Acoustic-Prosodic Features in Conversational Speech", HLT/NAACL 2003 Student Workshop, 2003. [pdf]
• Wen Wang, Yang Liu, and Mary Harper, "Rescoring Effectiveness of Language Models Using Different Levels of Knowledge and Their Integration", ICASSP 2002. [pdf]
• Yang Liu, Jiasong Sun, and Zuoying Wang, "Comparisons of Smoothing Methods in Chinese Language Model", ISCSLP 2000.
  
• Jiasong Sun, Xiaodong Cui, Zuoying Wang, and Yang Liu, "A Language Model Adaptation Approach Based on Text Classification", ICSLP 2000.
  

Other Workshops and Reports

• Yang Liu, Feifan Liu, Bin Liu, and Shasha Xie, "Do Disfluencies Affect Meeting Summarization: A Pilot Study on the Impact of Disfluencies", MLMI, 2007. Poster presentation.
• Feifan Liu, Yang Liu, and Bin Li, "Study on Correlation between ROUGE and Human Evaluation in Meeting Summarization", MLMI, 2007. Poster presentation.
  
• Yang Liu and Elizabeth Shriberg, "More Than Words Can Say: Using Prosody to Find Sentence Boundaries in Speech", Lay paper in the 4th ASA/ASJ Joint Meeting, Hawaii, 2006.
• Mary Harper, Bonnie Dorr, Brian Roark, John Hale, Zak Shafran, Yang Liu, Matt Lease, Matt Snover, Lisa Young, Robin Stewart, and Anna Krasnyanskaya, "Parsing Speech and Structural Event Detection", 2005 JHU Summer Workshop Final Report. http://www.cslp.jhu.edu/ws2005/groups/eventdetect/documents/finalreport.pdf.
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, Barbara Peskin, and Mary Harper, "The ICSI/SRI/UW RT04 Structural Metadata Extraction System ", EARS RT-04 Workshop, New York, November 2004. [pdf]
• Yang Liu, Elizabeth Shriberg, Andreas Stolcke, Barbara Peskin, Jeremy Ang, and Mary Harper, "ICSI-SRI-UW Structural MDE: Modeling, Analysis, and Issues ", EARS RT-04 Workshop presentation, New York, November 2004. [ppt]
• Yang Liu, Elizabeth Shriberg, Dustin Hillard et al., "ICSI/SRI/UW RT03F MDE System and Research", EARS RT-03F Workshop presentation, Washington D.C., November 2003. [ppt]
• Elizabeth Shriberg, Yang Liu, Mari Ostendorf et al., "Metadata Extraction Research at SRI/ICSI/UW", EARS RT-03S Workshop presentation, Boston, May 2003. [ppt]