I am interested in investigating machine learning techniques in enabling rich access to information. My current research interests are sentiment analysis and optinion mining; text mining; information extraction; natural language processing; business intelligence and data mining; machine learning; bioinformatics; spoken language understanding and information retrieval.

Keys: Sentiment analysis, opinion mining, information extraction, machine learning, natural language processing.

Huynh, T., He, Y., Willis, A. and Rüger, S. (2016) Adverse Drug Reaction Classification With Deep Neural Networks, Coling 2016, Osaka

Uren, V., Wright, D., Scott, J., He, Y. and Saif, H. (2016) Social media and sentiment in bioenergy consultation, International journal of energy sector management

Saif, H., He, Y., Fernandez, M. and Alani, H. (2016) Contextual semantics for sentiment analysis of Twitter, Information Processing and Management, 52, 1, pp. 5-19

, g., Mulholland, P., He, Y. and Alani, H. (2015) Predicting Answering Behaviour in Online Question Answering Communities, 26th Conference on Hypertext and Social Media, Cyprus

, g., He, Y., Mulholland, P. and Alani, H. (2015) Modelling Question Selection Behaviour in Online Communities, Poster at Companion Proceedings of the 2015 International Conference on the World Wide Web, Florence, Italy

Huynh, T., He, Y. and Rüger, S. (2015) Learning higher-level features with convolutional restricted Boltzmann machines for sentiment analysis, 37th European Conference on IR Research (ECIR 2015), Vienna

Saif, H., He, Y., Fernandez, M. and Alani, H. (2014) Semantic patterns for sentiment analysis of Twitter, 13th International Semantic Web Conference (ISWC 2014), Riva del Garda, Trentino, Italy, 8797, pp. 324-340, Springer International Publishing

Cano, E., He, Y. and Alani, H. (2014) Stretching the Life of Twitter Classifiers with Time-Stamped Semantic Graphs, 13th International Semantic Web Conference (ISWC14), Riva del Garda, Trentino Italy

Cano, E., He, Y. and Alani, H. (2014) The Topics they are a-Changing - Characterising Topics with Time-Stamped Semantic Graphs, Poster at 13th International Semantic Web Conference (ISWC14), Riva del Garda, Trentino Italy

Osborne, M., Moran, S., McCreadie, R., Lunen, A., Sykora, M., Cano, A., Ireson, N., MacDonald, C., Ounis, I., He, Y., Jackson, T., Ciravegna, F. and O'Brien., A. (2014) Real-Time Detection, Tracking and Monitoring of Automatically Discovered Events in Social Media, Demo at The 51st Annual Meeting of the Association for Computational Linguistics (ACL)

Saif, H., He, Y., Fernandez, M. and Alani, H. (2014) Adapting sentiment lexicons using contextual semantics for sentiment analysis of Twitter, Workshop: Workshop 5: SemanticSentimentAnalysis2014: Semantic Web and Sentiment Analysis, Crete, Greece, 8798, pp. 54-63, Springer International Publishing

, g. and He, Y. (2014) Quantising Contribution Effort in Online Communities, Poster at Companion Proceedings of the 2014 International Conference on the World Wide Web, Seoul, Korea

Saif, H., Fernandez, M., He, Y. and Alani, H. (2014) SentiCircles for contextual and conceptual semantic sentiment analysis of Twitter, 11th ESWC 2014, Crete, Greece, pp. 83-98, Springer Internatioal Publishing

Saif, H., Fernandez, M., He, Y. and Alani, H. (2014) On stopwords, filtering and data sparsity for sentiment analysis of Twitter, LREC 2014, Ninth International Conference on Language Resources and Evaluation, Reykjavik, Iceland, pp. 810-817

Burel, G. and He, Y. (2013) A Question of Complexity - Measuring the Maturity of Online Enquiry Communities, 24th ACM Conference on Hypertext and Social Media, Paris, France

Gurrin, C., He, Y., Kazai, G., Kruschwitz, U., Little, S., Roelleke, T., Rüger, S. and Rijsbergen, K. (2013) Advances in Information Retrieval (Proceedings of the 35th European Conference on IR Research, ECIR 2013) Advances in Information Retrieval, eds. Pavel Serdyukov,Pavel Braslavski,Sergei Kuznetsov,Jaap Kamps,Stefan Rüger,Eugene Agichtein,Ilya Segalovich,Emine Yilmaz, 7814, Springer

Saif, H., Fernandez, M., He, Y. and Alani, H. (2013) Evaluation datasets for Twitter sentiment analysis: a survey and a new dataset, the STS-Gold, Workshop: 1st Interantional Workshop on Emotion and Sentiment in Social and Expressive Media: Approaches and Perspectives from AI (ESSEM 2013), Turin, Italy

He, Y., Lin, C., Gao, W. and Wong, K. (2012) Dynamic Joint Sentiment-Topic Model, ACM Transactions on Intelligent Systems and Technology, In Press

Saif, H., He, Y. and Alani, H. (2012) Semantic Sentiment Analysis of Twitter, International Semantic Web Conference, Boston, US

Lin, C., He, Y., Pedrinaci, C. and Domingue, J. (2012) Feature LDA: a Supervised Topic Model for Automatic Detection of Web API Documentations from the Web, The 11th International Semantic Web Conference (ISWC), Boston, USA

He, Y., Lin, C. and Cano, E. (2012) Online Sentiment and Topic Dynamics Tracking over the Streaming Data, IEEE International Conference on Social Computing (SocialCom), Amsterdam, The Nethelands

He, Y. (2012) A Bayesian Modeling Approach to Multi-Dimensional Sentiment Distributions Prediction, Workshop: Workshop on Issues of Sentiment Discovery and Opinion Mining at The 18th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD)

He, Y. (2012) Incorporating Sentiment Prior Knowledge for Weakly-Supervised Sentiment Analysis, ACM Transactions on Asian Language Information Processing, 11, 2

He, Y., Lin, C., Gao, W. and Wong, K. (2012) Tracking Sentiment and Topic Dynamics from Social Media, Poster at The 6th International AAAI Conference on Weblogs and Social Media (ICWSM), Dublin, Ireland

He, Y., Saif, H., Wei, Z. and Wong, K. (2012) Quantizing Opinions for Political Tweets Analysis, The 8th International Conference on Language Resources and Evaluation (LREC), Istanbul, Turkey

, g., He, Y. and Alani, H. (2012) Automatic identification of best answers in online enquiry communities, 9th Extended Semantic Web Conference (ESWC 2012), Crete, Greece

Saif, H., He, Y. and Alani, H. (2012) Alleviating Data Sparsity for Twitter Sentiment Analysis, Workshop: The 2nd Workshop on Making Sense of Microposts (#MSM2012): Big things come in small packages at World Wide Web (WWW) 2012, Lyon, France

Lin, C., He, Y. and Everson, R. (2011) Sentence Subjectivity Detection with Weakly-Supervised Learning, The 5th International Joint Conference on Natural Language Processing (IJCNLP), Chiang Mai, Thailand

Wagner, C., Strohmaier, M., Sanchez Nunez, P. and He, Y. (2011) Pragmatic metadata matters: How data about the usage of data effects semantic user models, Workshop: Social Data on the Web Workshop at 10th International Semantic Web Conference (ISWC), Bonn, Germany

Zhou, D. and He, Y. (2011) A Novel Framework of Training Hidden Markov Support Vector Machines from Lightly-Annotated Data, Poster at 20th ACM Conference on Information and Knowledge Management (CIKM), Glasgow, UK

Saif, H., He, Y. and Alani, H. (2011) Semantic Smoothing for Twitter Sentiment Analysis, Poster at The 10th International Semantic Web Conference (ISWC), Bonn, Germany

Zhou, D. and He, Y. (2011) Biomedical Events Extraction using the Hidden Vector State Model, Artificial Intelligence in Medicine

He, Y., Lin, C. and Alani, H. (2011) Automatically Extracting Polarity-Bearing Topics for Cross-Domain Sentiment Classification, The 49th Annual Meeting of the Association for Computational Linguistics (ACL), Portland, Oregon

He, Y. (2011) Latent Sentiment Model for Weakly-Supervised Cross-Lingual Sentiment Classification, The 33rd European Conference on Information Retrieval (ECIR)

Zhou, D. and He, Y. (2011) Learning Conditional Random Fields from Unaligned Data for Natural Language Understanding, The 33rd European Conference on Information Retrieval (ECIR)

Lin, C., He, Y., Everson, R. and Rueger, S. (2011) Weakly-Supervised Joint Sentiment-Topic Detection from Text, IEEE Transactions on Knowledge and Data Engineering (TDKE)

Zhou, D. and He, Y. (2011) Semantic Parsing for Biomedical Event Extraction, Poster at The 9th International Conference on Computational Semantics, Oxford, UK

He, Y. and Zhou, D. (2010) Self-Training from Labeled Features for Sentiment Analysis, Information Processing & Management

He, Y. (2010) Learning Sentiment Classification Model from Labeled Features, Poster at The 19th ACM Conference on Information and Knowledge Management (CIKM), Toronto, Canada

He, Y., Alani, H. and Zhou, D. (2010) Exploring English Lexicon Knowledge for Chinese Sentiment Analysis, CIPS-SIGHAN Joint Conference on Chinese Language Processing, Beijing, China

Lin, C., He, Y. and Everson, R. (2010) A Comparative Study of Bayesian Models for Unsupervised Sentiment Detection, The 14th Conference on Computational Natural Language Learning (CoNLL), Uppsala, Sweden

He, Y. (2010) Goal Detection from Natural Language Queries, The 15th International Conference on Applications of Natural Language to Information Systems (NLDB), Cardiff, UK