Professor Yi Chang Dean of School of Artificial Intelligence, Jilin University ACM Distinguished Member British Computer Society(BCS) Fellow The Institution of Engineering and Technology (IET) Fellow Address:2699 Qianjian Street, Changchun 130012, China Email: yichang@jlu.edu.cn Website: http://yichang-cs.com/

Prof. Chang Yi, dean of the School of Artificial Intelligence of Jilin University, ACM Distinguished Member, IET Fellow and BCS Fellow.
He received hisB.S from Jilin University, two MS from the Institute of Computing Technology of the Chinese Academy of Sciences and Carnegie Mellon University respectively, and PhD from the University of Southern California. He was a research director at Yahoo Labs/Research from 2006 to 2016, and in charge of search relevance of Yahoo’s web. From 2016 to 2018, he was a technical vice president at Huawei Research America.Now he is the founding dean of School of Artificial Intelligence, Jilin University.
His research interests include information retrieval, data mining, machine learning, natural language processing, and artificial intelligence. So far, he has published more than 100 papers in world-class conferences and journals, and two books. He won the WSDM 2016 Best Paper Award and KDD 2016 Best Paper Award. Now he is the associate editor of TKDE, General Chairof WSDM Conference 2018 SIGIR Conference 2020

Education
Ph.D.,University of Southern California
M.S., Carnegie Mellon University
M.S., Institute of Computing Technology, Chinese Academy
B.S., College of Computer Science and Technology, Jilin University

Awards/Honors
2016        Best Paper Award KDD 2016
2016        Best Paper Award WSDM 2016 

Positions
2018-present        Dean of School of Artificial Intelligence, Jilin University
2018-present        National Distinguished Professor
2016-2018        Technical Vice President,Huawei Research America
2006-2016    Research Director，YahooLabs/Research

Professional Membership and Service
BCS Fellow
IET Fellow
ACM Distinguished member
General Chair: SIGIR 2020, WSDM 2018;        
Conference PC Chair: SIGIR 2018 (Industry Track), CIKM 2016 (Industry Track), AIRS 2016;
Area Chair (Senior PC): WWW 2017,2019~2020, WSDM 2017,2019~2020, SIGIR 2014~2019, CIKM 2011~2013
Sponsorship-chair: CIKM 2012, ICMLA 2011;    
PC member: SIGIR, WWW, WSDM, CIKM, ACL, KDD, EMNLP, AISTATS, IJCAI, etc.;
Grant Reviewer: NSF Career Proposal reviewer, NSF Proposal Panalist;
Associate Editor: IEEE TKDE (2015~); Neurocomputing, Elsevier (2011~); Pattern Recognition Letters, Elsevier (2011~2015);

Research Interest
Information Retrieval, Data Mining, Machine Learning, Natural Language Processing, Artificial Intelligence

Publications
Coauthored over 100 papers in international journalsand conferences, including more than50 papers in CCF A and more than 50 papers in CCF B.,2 books,2 book chapters,and over 30 patents.

Books:
1.Bo Long, Yi Chang, (Ed.) "Relevance Ranking for Vertical Search Engines", Morgan Kaufmann, 2014.
2.Hongbo Deng, Yi Chang, (Ed.) "Query Understanding for Search Engines", Springer, (upcoming).

Book Chapters:
1. Hongbo Deng, Yizhou Sun, Yi Chang, Jiawei Han, "Probabilistic Models for Classification", Data Classification: Algorithms and Applications (Charu C. Aggarwal Ed.), CRC Press, 2014.
2. Datong Chen, Yi Chang, Rong Yan, Jie Yang, "Protecting Personal Identification in Video", Protecting Privacy in Video Surveillance (Senior, Andrew Ed.), Springer 2009.

Selected Journal Publications:

1. Yue Wang, Dawei Yin, Luo Jie, Pengyuan Wang, Makoto Yamada, Yi Chang, Qiaozhu Mei, "Optimizing Whole-Page Presentation", Accepted by ACM TWEB.

2. Makoto Yamada, Jiliang Tang, Jose Lugo-Martinez, Ermin Hodzic, Raunak Shrestha, Avishek Saha, Hua Ouyang, Dawei Yin, Hiroshi Mamitsuka, Cenk Sahinalp, Predrag Radivojac, Filippo Menczer, Yi Chang, "Ultra High-Dimensional Nonlinear Feature Selection for Big Biological Data", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 30(7), 2018.

3. Yingfei Wang, Hua Ouyang, Hongbo Deng, Yi Chang, "Learning Online Trends for Interactive Query Auto-Completion", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 29(11), 2017.

4. Hongning Wang, Rui Li, Milad Shokouhi, Hang Li, Yi Chang, "Search, Mining and their Applications on Mobile Devices: Introduction to the Special Issue", ACM Transactions on Information Systems (TOIS), Vol. 35(4), 2017.

5. Yuening Hu, Changsung Kang, Jiliang Tang, Dawei Yin, Yi Chang, "Large-scale Location Prediction for Web Pages", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 29(9), 2017.

6. Yi Chang, Makoto Yamada, Antonio Ortega, Yan Liu, "Life Cycle Modeling for Buzz Temporal Pattern Discovery", ACM Transactions on Knowledge Discovery from Data, Vol. 11(2), 2016.

7. Jiliang Tang, Yi Chang, Charu Aggarwal, Huan Liu, "A Survey of Signed Network Mining in Social Media", ACM Computing Surveys, Vol. 49(3), 2016.

8. Makoto Yamada, Leonid Sigal, Michalis Raptis, Machiko Toyoda, Yi Chang, Masashi Sugiyama, "Cross-Domain Matching with Squared-Loss Mutual Information", IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), Vol. 37(9), 2015.

9. Bo Long, Jiang Bian, Olivier Chapelle, Ya Zhang, Yoshiyuki Inagaki, Yi Chang, "Active Learning for Ranking through Expected Loss Optimization", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 27(5), 2015.

10. Changsung Kang, Dawei Yin, Ruiqiang Zhang, Jianzhang He, Yi Chang, "Learning to ranking Related Entities in Web Search", Neurocomputing, Vol 166, 2015.

11. Changsung Kang, Roi Blanco, Jay Lee, Yi Chang, "Predicting Primary Categories of Business Listings for Local Search Ranking", Neurocomputing, Vol 168, 2015.

12. Yi Chang, Lei Tang, Yoshiyuki Inagaki, Yan Liu, "What is Tumblr: A Statistical Overview and Comparison", SIGKDD Explorations, Vol. 16(1), 2014.

13. M. T. Bahadori, Y. Chang, B. Long, Y. Liu, "Scalable Heterogeneous Transfer Ranking ," Journal of Machine Learning Research (JMLR) - Proceedings Track 36: 214-228, 2014.

14. Jiang Bian, Bo Long, Lihong Li, Taesup Moon, Anlei Dong, Yi Chang, "Exploiting User Preference for Online Learning in Web Content Optimization Systems", ACM Transactions on Intelligent Systems and Technology (ACM TIST), Vol. 5(2), 2014.

15. Makoto Yamada, Leonid Sigal, Yi Chang, "Domain Adaptation for Structured Regression", International Journal of Computer Vision (IJCV), Vol. 109(1-2), 2014.

16. Ke Zhou, Hongyuan Zha, Yi Chang, Gui-Rong Xue, "Learning the Gain Values and Discount Factors of Discounted Cumulative Gains", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 26(2), 2014.

17. Jiliang Tang, Yi Chang, Huan Liu, "Mining Social Media with Social Theories: A Survey", SIGKDD Explorations, Vol. 15(2), 2013.

18. Jiang Bian, Anlei Dong, Xiaofeng He, Srihari Reddy, Yi Chang, "User Action Interpretation for Online Content Optimization", IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 25(9), 2013.

19. Yi Chang, Anlei Dong, Pranam Kolari, Ruiqiang Zhang, Yoshiyuki Inagaki, Fernando Diaz,  Hongyuan zha, Yan Liu, "Improving Recency Ranking Using Twitter Data", ACM Transactions on Intelligent Systems and Technology (ACM TIST), vol. 4, No. 1, 2013.

20. Jiang Bian, Yi Chang, "Learning to Blend Vitality Rankings from Heterogeneous Social Networks", Neurocomputing, Vol 97, 2012.

21. Taesup Moon, Lihong Li, Wei Chu, Yi Chang, Zhaohui Zheng, "An Online Learning Framework for Refining Recency Search Results with User Click Feedback", ACM Transactions on Information Systems (TOIS), Vol. 30, 2012.

22. Yi Chang, Jing Bai, Ke Zhou, Gui-Rong Xue, Hongyuan Zha, Zhaohui Zheng, "Multi-Task Learning to Rank for Web Search", Pattern Recognition Letters, Vol. 33, 2012.

23. Olivier Chapelle, Yi Chang, Tie-Yan Liu, "Future directions in learning to rank", Journal of Machine Learning Research (JMLR) - Proceedings Track 14, 2011.

24. Olivier Chapelle, Yi Chang, "Yahoo! Learning to Rank Challenge Overview", Journal of Machine Learning Research (JMLR) - Proceedings Track 14, 2011.

25. Yi Chang, Jana Diesner, Kathleen M. Carley, "Towards Automated Definition Acquisition from Military Operations Law", IEEE Transactions on Systems, Man, and Cybernetics (IEEE SMC) --Part C: Applications and Reviews, Vol 41, Issue: 4, 2011.

26. Yi Chang, Datong Chen, Ying Zhang, Jie Yang, "An Image-based Automatic Arabic Translation System", Pattern Recognition 42(9), 2009.

27. Datong Chen, Yi Chang, Rong Yan, Jie Yang, "Tools for Protecting The Privacy of Specific Individuals in Video", in EURASIP Journal on Applied Signal Processing, Special Issue on "Signal Processing Technologies for Ambient Intelligence in Home-Care Applications", 2007.

Selected Conference Publications:

1. Shubhra Kanti Karmaker Santu, Liangda Li, Yi Chang, Chengxiang Zhai, "Joint Influence Modeling for Collective Search Behavior", Proceedings of the 27th ACM Conference on Information and Knowledge Management (CIKM), 2018.

2. Congying Xia, Chenwei Zhang, Xiaohui Yan, Yi Chang, Philip Yu, "Zero-shot User Intent Detection via Capsule Neural Networks", Proceedings of 2018 Conference on Empirical Methods on Natural Language Processing (EMNLP), 2018.

3. Shuai Wang, Sahisnu Mazumder, Bing Liu, Mianwei Zhou, Yi Chang, "Target-Sensitive Memory Networks for Aspect Sentiment Classification", Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (ACL), 2018.

4. Shashi Narayan, Ronald Cardenas, Nikos Papasarantopoulos, Shay B. Cohen, Mirella Lapata, Jiangsheng Yu, Yi Chang, " Document Modeling with External Attention for Sentence Extraction", Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (ACL), 2018.

5. Jundong Li, Jiliang Tang, Yilin Wang, Yali Wan, Yi Chang, Huan Liu, "Understanding and Predicting Delay in Reciprocal Relations", Proceedings of the 27th International World Wide Web Conference (WWW), 2018.

6. Denghao Ma, Yueguo Chen, Kevin Chang, Xiaoyong Du, Chuanfei Xu, Yi Chang, "Leveraging Fine-Grained Wikipedia Categories for Entity Search", Proceedings of the 27th International World Wide Web Conference (WWW), 2018.

7. Fuad Issa, Marco Damonte, Shay B. Cohen, Xiaohui Yan, Yi Chang, "Abstract Meaning Representation for Paraphrase Detection", Proceedings of North American Chapter of the Association for Computational Linguistics - Human Language Technologies conference (NAACL-HLT), 2018.

8. Kai Shu, Suhang Wang, Jiliang Tang, Yi Chang, Ping Luo, Huan Liu, "Exploiting User Actions for App Recommendations", Proceedings of IEEE/ACM International Conference on Social Networks Analysis and Mining (ASONAM), 2018. (short)

9. Makoto Yamada, Wenzhao Lian, Amit Goyal, Jianhui Chen, Kishan Wimalawarne, Suleiman Kahn, Samuel Kaski, Hiroshi Mamitsuka, Yi Chang, "Convex Factorization Machine for Toxicogenomics Prediction", Proceedings of the 23rd ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2017.

10. Yilin Wang, Jiliang Tang, Jundong Li, Baoxin Li, Yali Wan, Clayton Mellina, Neil O'Hare, Yi Chang, "Understanding and Discovering Deliberate Self-harm Content in Social Media", Proceedings of the 26th International World Wide Web Conference (WWW), 2017.

11. Liangda Li, Hongbo Deng, Anlei Dong, Yi Chang, Hongyuan Zha, Ricardo Baeza-Yates, "Exploring Query Auto-Completion and Click Logs for Contextual-Aware Web Search and Query Suggestion", Proceedings of the 26th International World Wide Web Conference (WWW), 2017.

12. Shiyu Chang, Yang Zhang, Jiliang Tang, Dawei Yin, Yi Chang, Mark Hasegawa-Johnson, Thomas Huang, " Streaming Recommender Systems", Proceedings of the 26th International World Wide Web Conference (WWW), 2017.

13. Shubhra Kanti Karmaker Santu, Liangda Li, Dae Hoon Park, Chengxiang Zhai, Yi Chang, "Modeling the Influence of Popular Trending Events on User Search Behavior", Proceedings of the 26th International World Wide Web Conference (WWW), 2017.

14. Yingfei Wang, Hua Ouyang, Chu Wang, Jianhui Chen, Tsvetan Asamov, Yi Chang, "Efficient Ordered Combinatorial Semi-Bandits for Whole-page Recommendation", Proceedings of the 31st  AAAI Conference on Artificial Intelligence (AAAI), 2017.

15. Liangda Li, Hongbo Deng, Jianhui Chen, Yi Chang, "Learning Parametric Models for Context-Aware Query Auto-Completion via Hawkes Processes", Proceedings of International conference on Web Search and Data Mining (WSDM), 2017.

16. Jiawei Zhang, Jianhui Chen, Junxing Zhu, Yi Chang, Philip S. Yu, "Link Prediction with Cardinality Constraint", Proceedings of International conference on Web Search and Data Mining (WSDM), 2017.

17. Tianyi Zhou, Hua Ouyang, Yi Chang, Jeff Blimes, Carlos Guestrin, " Scaling Submodular Maximization via Pruned Submodularity Graphs", Proceedings of 20th International Conference on Artificial Intelligence and Statistics (AISTATS), 2017.

18. Jiawei Zhang, Jianhui Chen, Shi Zhi, Yi Chang, Philip S. Yu, Jiawei Han, "Link Prediction across Aligned Networks with Sparse and Low Rank Matrix Estimation", Proceedings of IEEE International Conference on Data Engineering (ICDE), 2017.

19. Suhang Wang, Jiliang Tang, Charu Aggarwal, Yi Chang, Huan Liu, "Signed Network Embedding in Social Media", Proceedings of SIAM International Conference on Data Mining (SDM), 2017.

20. Jundong Li, Harsh Dani, Xia Hu, Jiliang Tang, Yi Chang, Huan Liu, "Attributed Network Embedding for Learning in a Dynamic Environment", Proceedings of the 26th ACM Conference on Information and Knowledge Management (CIKM), 2017.

21. Jingyuan Zhang, Chun-Ta Lu, Bokai Cao, Yi Chang, Philip S. Yu, "Connecting emerging relationships from news via tensor factorization", Proceedings IEEE International Conference on Big Data (BigData), 2017.

22. Chuancong Gao, Jian Pei, Jiannan Wang, Yi Chang, " Schemaless Join for Result Set Preferences", Proceedings of IEEE International Conference on Information Reuse and Integration (IRI), 2017.

23. Chuancong Gao, Jiannan Wang, Jian Pei, Rui Li, Yi Chang, " Preference-driven Similarity Join", Proceedings of International Conference on Web Intelligence (WI), 2017. (Best Student Paper Award)

24. Dawei Yin, Yuening Hu, Jiliang Tang, Tim Daly, Mianwei Zhou, Hua Ouyang, Jianhui Chen, Changsung Kang, Hongbo Deng, Chikashi Nobata, Jean-Marc Langlois, Yi Chang, "Ranking Relevance in Yahoo Search", Proceedings of the 22nd ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2016. (Best Paper Award)

25. Shiyu Chang, Yang Zhang, Jiliang Tang, Dawei Yin, Yi Chang, Mark Hasegawa-Johnson, Thomas S. Huang, "Positive Unlabeled Learning in Streaming Networks", Proceedings of the 22nd ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2016.

26. Yue Wang, Dawei Yin, Luo Jie, Pengyuan Wang, Makoto Yamada, Yi Chang, Qiaozhu Mei, "Beyond Ranking: Optimizing Whole-Page Presentation", Proceedings of International conference on Web Search and Data Mining (WSDM), 2016. (Best Paper Award)

27. Jingyuan Zhang, Chun-Ta Lu, Mianwei Zhou, Sihong Xie, Yi Chang, Philip S. Yu, "HEER: Heterogeneous Graph Embedding for Emerging Relation Detection from News", Proceedings IEEE International Conference on Big Data (BigData), 2016.

28. Xiaolong Wang, Jingjing Wang, Luo Jie, Yi Chang, Chengxiang Zhai, "Binding Pairwise Preferences of the Crowd into Rankings: A Thurstonian Approach", Proceedings of IEEE International Conference on Data Mining (ICDM), 2016.

29. Yunlong He, Jiliang Tang, Hua Ouyang, Changsung Kang, Dawei Yin, Yi Chang, "Learning to rewrite queries", Proceedings of the 25th ACM Conference on Information and Knowledge Management (CIKM), 2016.

30. Jianhui Chen, Tianbao Yang, Lijun Zhang, Qihang Lin, Yi Chang, "Optimal Stochastic Strongly Convex Optimization with a Logarithmic Number of Projections", Proceedings of the 32nd Conference on Uncertainty in Artificial Intelligence (UAI), 2016.

31. Jingjing Wang, Changsung Kang, Yi Chang, Jiawei Han, "Learning Hostname Preference to Enhance Search Relevance", Proceedings of the 25th International Joint Conference on Artificial Intelligence (IJCAI), 2016.

32. Yi Chang, Jiliang Tang, Dawei Yin, Makoto Yamada, Yan Liu, "Timeline Summarization with Life Cycle Models from Social Media", Proceedings of the 25th International Joint Conference on Artificial Intelligence (IJCAI), 2016.

33. Neil O'Hare, Paloma De Juan, Rossano Schifanella, Yunlong He, Dawei Yin, Yi Chang, "Leveraging User Interaction Signals for Web Image Search", Proceedings of the 39th Annual ACM SIGIR Conference (SIGIR), 2016.

34. Shan Jiang, Yuening Hu, Changsung Kang, Tim Daly, Dawei Yin, Yi Chang, "Learning Query and Document Relevance from Web-scale Click Graph", Proceedings of the 39th Annual ACM SIGIR Conference (SIGIR), 2016.

35. Aston Zhang, Amit Goyal, Ricardo Baeza-Yates, Yi Chang, Jiawei Han, Carl A. Gunter, Hongbo Deng, "Towards Mobile Query Auto-Completion: A Mobile Application-Aware Approach", Proceedings of the 25th International World Wide Web Conference (WWW), 2016.

36. Liangda Li, Hongbo Deng, Yunlong He, Anlei Dong, Yi Chang, Hongyuan Zha, "Behavior Driven Topic Transition for Search Task Identification", Proceedings of the 25th International World Wide Web Conference (WWW), 2016.

37. Chikashi Nobata, Joel Tetreault, Achint Thomas, Yashar Mehdad, Yi Chang, "Abusive Language Detection in User Content", Proceedings of the 25th International World Wide Web Conference (WWW), 2016.

38. Jiliang Tang, SuhangWang, Xia Hu, Dawei Yin, Yingzhou Bi, Yi Chang, Huan Liu, "Recommendation with Social Dimensions", Proceedings of the 30th AAAI Conference on Artificial Intelligence (AAAI), 2016.

39. Jingyuan Zhang, Luo Jie, Altaf Rahman, Sihong Xie, Yi Chang, Philip S. Yu, "Learning Entity Types from Query Logs via Graph-Based Modeling", Proceedings of the 24th ACM Conference on Information and Knowledge Management (CIKM), 2015.

40. Aston Zhang, Amit Goyal, Weize Kong, Hongbo Deng, Anlei Dong, Yi Chang, Carl A. Gunter, Jiawei Han, "aQAC: Adapting Query Auto-Completion to Implicit Negative Feedback", Proceedings of the 38th Annual ACM SIGIR Conference (SIGIR), 2015.

41. Weize Kong, Rui Li, Jie Luo, Aston Zhang, Yi Chang, James Allan, "Predicting Search Intent Based on Pre-search Context", Proceedings of the 38th Annual ACM SIGIR Conference (SIGIR), 2015.

42. Liangda Li, Hongbo Deng, Anlei Dong, Yi Chang, Hongyuan Zha, Ricardo Baeza-Yates, "Analyzing User’s Sequential Behavior in Query Auto-Completion via Markov Processes", Proceedings of the 38th Annual ACM SIGIR Conference (SIGIR), 2015.

43. Suriya Gunasekar, Makoto Yamada, Dawei Yin, Yi Chang, "Consistent Collective Matrix Completion under Joint Low Rank Structure", Proceedings of 18th International Conference on Artificial Intelligence and Statistics (AISTATS), 2015.

44. Jiliang Tang, Chikashi Nobata, Anlei Dong, Yi Chang, Huan Liu, "Propagation-based Sentiment Analysis for Microblogging Data", Proceedings of SIAM International Conference on Data Mining (SDM), 2015.

45. Wei Sun, Pengyuan Wang, Dawei Yin, Jian Yang, Yi Chang, "Causal Inference via Sparse Additive Models with Application to Online Advertising", Proceedings of the 29th AAAI Conference on Artificial Intelligence (AAAI), 2015.

46. Pengyuan Wang, Wei Sun, Dawei Yin, Jian Yang, Yi Chang, "Robust Tree-based Causal Inference for Complex Ad Effectiveness Analysis", Proceedings of International conference on Web Search and Data Mining (WSDM), 2015.

47. Pengyuan Wang, Dawei Yin, Jian Yang, Yi Chang, "Rethink Targeting: Detect `Smart Cheating' in Online Advertising through Causal Inference", Proceedings of the 24th International World Wide Web Conference (WWW), 2015. (short)

48. Yi Chang, Makoto Yamada, Antonio Ortega, Yan Liu, "Ups and Downs in Buzzes: Life Cycle Modeling forTemporal Pattern Discovery", Proceedings of IEEE International Conference on Data Mining (ICDM), 2014. (short)

49. Jiliang Tang, Xia Hu, Yi Chang, Huan Liu, "Predictability of Distrust with Interaction Data", Proceedings of the 23th ACM Conference on Information and Knowledge Management (CIKM), 2014.

50. Jingyuan Zhang, Xiangnan Kong, Roger Jie Luo, Yi Chang, Philip S. Yu, "NCR: A Scalable Network-Based Approach to Co-Ranking in Question-and-Answer Sites", Proceedings of the 23th ACM Conference on Information and Knowledge Management (CIKM), 2014.

51. Liangda Li, Hongbo Deng, Anlei Dong, Yi Chang, Hongyuan Zha, "Identifying and Labeling Search Tasks via Query-based Hawkes Processes", Proceedings of the 20th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2014.

52. Yanen Li, Anlei Dong, Hongning Wang, Hongbo Deng, Yi Chang, ChengXiang Zhai, "A Two-Dimensional Click Model for Query Auto-Completion", Proceedings of the 37th Annual ACM SIGIR Conference (SIGIR), 2014.

53. Jingjing Wang, Changsung Kang, Yi Chang, Jiawei Han, "A Hierarchical Dirichlet Model for Taxonomy Expansion for Search Engines", Proceedings of the 23rd International World Wide Web Conference (WWW), 2014.

54. Hongning Wang, Chengxiang Zhai, Feng Liang, Anlei Dong, Yi Chang, "User Modeling in Search Logs via A Nonparametric Bayesian Approach", Proceedings of International conference on Web Search and Data Mining (WSDM), 2014.

55. Luo Jie, Sudarshan Lamkhede, Rochit Sapra, Evans Hsu, Helen Song, Yi Chang, "A Unified Search Federation System Based on Online User Feedback", Proceedings of the 19th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2013.

56. Yoshiyuki Inagaki, Yi Chang, Jiang Bian, "An Effective General Framework for Localized Content Optimization", Proceedings of the 22nd International World Wide Web Conference (WWW), 2013. (short)

57. Achint Thomas, Kunal Punera, Lyndon Kennedy, Belle Tseng, Yi Chang, "Framework for Evaluation of Text Captchas", Proceedings of the 22nd International World Wide Web Conference (WWW), 2013. (short)

58. Hongning Wang, Chengxiang Zhai, Anlei Dong, Yi Chang, "Content-Aware Click Modeling", Proceedings of the 22nd International World Wide Web Conference (WWW), 2013.

59. Yi Chang, Xuanhui Wang, Qiaozhu Mei, Yan Liu, "Towards Twitter Context Summarization with User Influence Models", Proceedings of International conference on Web Search and Data Mining (WSDM), 2013.

60. Bo Long, Jiang Bian, Anlei Dong, Yi Chang, "Enhancing Product Search by Best-Selling Prediction in E-Commerce", Proceedings of the 21st ACM Conference on Information and Knowledge Management (CIKM), 2012. (short)

61. Changsung Kang, Jeehaeng Lee, Yi Chang, "Predicting Primary Categories of Business Listings for Local Search", Proceedings of the 21st ACM Conference on Information and Knowledge Management (CIKM), 2012. (short)

62. Shuang-Hong Yang, Hongyuan Zha, Yi Chang, Bo Long, Alex Smola, "Friend or Frenemy? Predicting Signed Ties in Social Networks", Proceedings of the 35th Annual ACM SIGIR Conference (SIGIR), 2012.

63. Zhiheng Huang, Yi Chang, Bo Long, Jean-Francois Crespo, Anlei Dong, Sathiya Keerthi, Su-Lin Wu, "Iterative Viterbi A* Algorithm for K-Best Sequential Decoding", Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (ACL), 2012.

64. Hongning Wang, Anlei Dong, Lihong Li, Yi Chang, Evgeniy Gabrilovich, "Joint Relevance and Freshness Learning From Click-throughs for News Search", Proceedings of the 21st International World Wide Web Conference (WWW), 2012.

65. Xuanhui Wang, Jiang Bian, Yi Chang, Belle Tseng, "Model News Relatedness through User Comments", Proceedings of the 21st International World Wide Web Conference (WWW), 2012. (short)

66. Bo Long, Yi Chang, Anlei Dong, Jianzhang He, "Pairwise Cross-Domain Factor Model for Heterogeneous Transfer Ranking", Proceedings of International conference on Web Search and Data Mining (WSDM), 2012.

67. Changsung Kang, Xuanhui Wang, Yi Chang, Belle Tseng, "Learning to Rank with Multi-Aspect Relevance for Vertical Searches", Proceedings of International conference on Web Search and Data Mining (WSDM), 2012.

68. Anlei Dong, Yi Chang, Srihari Reddy, Jiang Bian, Xiaofeng He, "User Action Interpretation for Personalized Content Optimization in Recommender Systems", Proceedings of the 20th ACM Conference on Information and Knowledge Management (CIKM), 2011. (short)

69. Jiang Bian, Yi Chang, "A Taxonomy of Local Search: Semi-Supervised Query Classification Driven by Information Needs", Proceedings of the 20th ACM Conference on Information and Knowledge Management (CIKM), 2011. (short)

70. Yi Chang, Ruiqiang Zhang, Srihari Reddy, Yan Liu, "Detecting Multilingual and Multi-Regional Query Intent in Web Search", Proceedings of the Special Track on AI & the Web (AIW) at the 25th AAAI Conference on Artificial Intelligence (AAAI), 2011.

71. Yuanhua Lv, Taesup Moon, Pranam Kolari, Zhaohui Zheng, Xuanhui Wang, Yi Chang, "Learning to Model Relatedness for News Recommendation", Proceedings of the 20th International World Wide Web Conference (WWW), 2011.

72. Changsung Kang, Srinivas Vadrevu, Ruiqiang Zhang, Roelof van Zwol, Lluis Garcia Pueyo, Nicolas Torzec, Jianzhang He, Yi Chang, "Ranking Related Entities for Web Search Queries", Proceedings of the 20th International World Wide Web Conference (WWW), 2011. (short)

73. Yoshiyuki Inagaki, Jiang Bian, Yi Chang, "Enhancing Mobile Search Using Web Search Log Data", Proceedings of the 34th Annual ACM SIGIR Conference (SIGIR), 2011. (short)

74. Changsung Kang, Xuanhui Wang, Belle Tseng, Yi Chang, Zhaohui Zheng, "Learning to Re-rank Web Search Results with Multiple Pairwise Features", Proceedings of International conference on Web Search and Data Mining (WSDM), 2011.

75. Srinivas Vadrevu, Choon Hui Teo, Suju Rajan, Kunal Punera, Byron Dom, Alexander Smola, Yi Chang, Zhaohui Zheng, "Scalable Clustering of News Search Results", Proceedings of International conference on Web Search and Data Mining (WSDM), 2011.

76. Ruiqiang Zhang, Yuki Konda, Anlei Dong, Pranam Kolari, Yi Chang, Zhaohui Zheng, "Learning Recurrent Event Queries for Web Search", Proceedings of 2010 Conference on Empirical Methods on Natural Language Processing (EMNLP), 2010.

77. Alexander Kotov, Yi Chang, Pranam Kolari, Lei Duan, "Temporal Query Log Profiling to Improve Web Search Ranking", Proceedings of the 19th ACM Conference on Information and Knowledge Management (CIKM), 2010.

78. Bo Long, Zhaohui Zheng, Yi Chang, Shuang-Hong Yang, "Ranking with Auxiliary Data", Proceedings of the 19th ACM Conference on Information and Knowledge Management (CIKM), 2010. (short)

79. Zhenzhen Kou, Zhaohui Zheng, Yi Chang, Hongyuan Zha, "Learning to Blend Rankings: a monotonic transformation to blend rankings from multiple domains", Proceedings of the 19th ACM Conference on Information and Knowledge Management (CIKM), 2010. (short)

80. Taesup Moon, Zhaohui Zheng, Yi Chang, Ciya Liao, Lihong Li, Wei Chu, " Online learning for recency search ranking using real-time user feedback", Proceedings of the 19th ACM Conference on Information and Knowledge Management (CIKM), 2010. (short)

81. Jing Bai, Fernando Diaz, Yi Chang, Zhaohui Zheng, "Cross-Market Model Adaptation with Pairwise Preference Data for Web Search Ranking", Proceedings of the 23rd International Conference on Computational Linguistics (COLING), 2010.

82. Yoshiyuki Inagaki, Narayanan Sadagopan, Georges Dupret, Ciya Liao, Yi Chang, Anlei Dong, Zhaohui Zheng, "Session Based Click Features for Recency Ranking", Proceedings of the Special Track on AI & the Web (AIW) at the 24th AAAI Conference on Artificial Intelligence (AAAI), 2010.

83. Bo Long, Olivier Chapelle, Zhaohui Zheng, Ya Zhang, Belle Tseng, Yi Chang, "Active Learning for Ranking through Expected Loss Optimization", Proceedings of the 33rd Annual ACM SIGIR Conference (SIGIR), 2010.

84. Anlei Dong, Ruiqiang Zhang, Pranam Kolari, Jing Bai, Fernando Diaz, Yi Chang, Hongyuan Zha, Zhaohui Zheng, "Time is of the essence: improving recency ranking using Twitter data", Proceedings of the 19th International World Wide Web Conference (WWW), 2010.

85. Anlei Dong, Yi Chang, Zhaohui Zheng, Gilad Mishne, Jing Bai, Karolina Buchner, Ruiqiang Zhang, Ciya Liao, Fernando Diaz, "Towards Recency Ranking in Web Search", Proceedings of International conference on Web Search and Data Mining (WSDM), 2010.

86. Taesup Moon, Alex Smola, Yi Chang, Zhaohui Zheng, "IntervalRank - Isotonic Regression with Listwise and Pairwise Constraints", Proceedings of International conference on Web Search and Data Mining (WSDM), 2010.

87. Yi Chang, Anlei Dong, Ciya Liao, Zhaohui Zheng, "Enhancing Topical Ranking with Preferences from Click-Through Data", Proceedings of the 32th Annual ACM SIGIR Conference (SIGIR), 2009. (short)

88. Mingrui Wu, Yi Chang, Zhaohui Zheng, Hongyuan Zha. "Smoothing DCG for Learning to Rank: A Novel Approach Using Smoothed Hinge Functions", Proceedings of the 18th ACM Conference on Information and Knowledge Management (CIKM), 2009. (short)

89. Xin Li, Fan Li, Shihao Ji, Zhaohui Zheng, Yi Chang, Anlei Dong. "Incorporating Robustness into Web Ranking Function Selection", Proceedings of the 18th ACM Conference on Information and Knowledge Management (CIKM), 2009. (short)

90. Jing Bai, Ke Zhou, Hongyuan Zha, Belle Tseng, Zhaohui Zheng, Yi Chang. "Multi-Task Learning for Learning to Rank in Web Search", Proceedings of the 18th ACM Conference on Information and Knowledge Management (CIKM), 2009. (short)

91. Anlei Dong, Yi Chang, Shihao Ji, Ciya Liao, Xin Li, Zhaohui Zheng, "Empirical Exploitation of Click Data for Topical Ranking", Proceedings of 2009 Conference on Empirical Methods on Natural Language Processing (EMNLP), 2009.

92. Ruiqiang zhang, Yi Chang, Zhaohui Zheng, Donald Metzle, Jian-yun Nie, "Search Engine Adaptation by Feedback Control Adjustment for Time-sensitive Query", Proceedings of North American Chapter of the Association for Computational Linguistics - Human Language Technologies conference (NAACL-HLT), 2009. (short)

93. Jing Bai, Yi Chang, Zhaohui zheng, Gordon Sun, Hang Cui, Xin Li, "Investigation of Partial Query Proximity in Web Search". Proceedings of the 17th International World Wide Web Conference (WWW), 2008. (short)

94. Yi Chang, Ying Zhang, Jie Yang, "Enhancing Image-based Arabic Document Translation Using a Noisy Channel Correction Model". Proceedings of MT Summit XI (MT Summit), 2007.

95. Yi Chang, Rong Yan, Datong Chen, Jie Yang, "People Identification with Limited Labels in Privacy-Protected Video'', Proceedings of IEEE International Conference on Multimedia & Expo (ICME), 2006. (short)

96. Yi Chang, Hongbo Xu, Shuo Bai, ''A re-examination of IR techniques in QA system'', Proceedings of the 1st International Joint Conference of Natural Language Processing (IJCNLP), 2004.

97. Yi Chang, Hongbo Xu, Shuo Bai, ''TREC 2003 Question Answering Track at CAS-ICT'', Proceedings of the 12th Text Retrieval Conference Notebook (TREC), 2003.

Patents

1."Automatic Social Media Content Timeline Summarization Method and Apparatus", Patent Application No. 15/200,922, Yahoo! Inc. 2016.

2."Method and System for Rewriting a Query", Patent Application No. 15/130,217, Yahoo! Inc. 2016.

3."Computerized system and method for high-quality and high-ranking digital content discovery", Patent Application No. 15/074,028, Yahoo! Inc. 2016.

4."Predicting locations for web pages and related techniques", Patent Application No. 14/868,154, Yahoo! Inc. 2015.

5."Method and system for recommending content", Patent Application No. 14/983,663, Yahoo! Inc. 2015.

6."Audio verification", Patent Application No. 14/847,742, Yahoo! Inc. 2015.

7."Transition event detection", Patent Application No. 14/601,128, Yahoo! Inc. 2015.

8."Computerized system and method for search query auto-completion", Patent Application No. 14/869,435, Yahoo! Inc. 2015.

9."Method and system for ranking search content", Patent Application No. 14/959,122, Yahoo! Inc. 2015.

10."Large-scale Anomaly Detection with Relative Density-Ratio Estimation", Patent Application No. 14/634,515, Yahoo! Inc. 2015.

11."Location-sensitive ranking for search and related techniques", Patent Application No. 14/868,135, Yahoo! Inc. 2015.

12."Systems and methods for measuring complex online strategy effectiveness", Patent Application No. 14/587,328, Yahoo! Inc. 2014.

13."System and method for large-scale multi-label learning using incomplete label assignments", Patent Application No. 14/543,133, Yahoo! Inc. 2014.

14."Feature Selection", Patent Application No. 14/516,471, Yahoo! Inc. 2014.

15."Local query ranking for search assist method and apparatus", Patent Application No. 14/453,915, Yahoo! Inc. 2014.

16."Graphical interface presentation of search results", Patent Application No. 14/497,591, Yahoo! Inc. 2014.

17."Method and system for providing query suggestions including entities", Patent Number 9,836,554, Yahoo! Inc. 2014.

18."Method and system for providing query suggestions based on user feedback", Patent Application No. 14/546,635, Yahoo! Inc. 2014.

19."Ranking Products Using Purchase Day Based Time Windows", Patent Application No. 13/662,159, Patent Number 8,880,518, Yahoo! Inc. 2012.

20."Automated Categorization of Products in a Merchant Catalog", Patent Application No. 13/720,703, Yahoo! Inc. 2012.

21."Method or system for content recommendations", Patent Application No. 13/348,573, Yahoo! Inc. 2011.

22."Method and System for Customizing a Web Site", Patent Application No. 13/647,581, Patent Number 9,268,859, Yahoo! Inc. 2011.

23."Related News Articles", Patent Application No. 13/298,932, Patent Number 8,713,028, Yahoo! Inc. 2011.

24."Cross-Market Model Adaptation with Pairwise Preference Data", Patent Application No. 12/966,983, Patent Number 8,489,590, Yahoo! Inc., 2010.

25."Micro-Blog Message Filtering", Patent Application No. 12/857,000, Yahoo! Inc., 2010.

26."Clustering of search results", Patent Application No. 12/835,954, Patent Number 9,443,008, Yahoo! Inc., 2010.

27."Ranking of Search Result Based on Microblog data", Patent Application No. 12/749,972, Patent Number 8,751,511, Yahoo! Inc., 2010.

28."Session Based Click Features for Recency Ranking (I)", Patent Application No. 12/725,310, Patent Number 8,255,390, Yahoo! Inc., 2010.

29."Session Based Click Features for Recency Ranking (II)", Patent Application No. 12/725,357, Patent Number 8,326,815, Yahoo! Inc., 2010.

30."Global and topical ranking of search results using user clicks", Patent Application No. 12/533,564, Yahoo! Inc., 2009.

31."Incorporating Recency in Network Search Using Machine Learning", Patent Application No. 12/579,855, Patent Number 8,886,641, Yahoo! Inc., 2009.

32."Improved Search Ranking for Time Sensitive Query by Feedback Control", Patent Application No. 12/576,534, Yahoo! Inc., 2009.