I have worked on the AKT, Dot.Kom, and ELeGI projects. Currently I am interested in expert search in organizational intranets. A novel two-stage language model is proposed for effective expert search, and achieved excellent results in TREC Enterprise Track Expert Search task.

I have led the development of the CORDER (Community Relation Discovery by Named Entities) system which measures associations between named entities in a text corpus by integrating their occurrences, distances in...

Keys: Information Retrieval, Expert Search, Enterprise Search, Natural Language Processing, Named Entity Recognition, Text Mining, Semantic Web, Web Link Structure Mining

Zhu, J., Huang, X., Song, D. and Rueger, S. (2010) Integrating multiple document features in language models for expert finding, Knowledge and Information Systems, 23, 1, pp. 29-54, Springer

Zhu, J., Song, D., Eisenstadt, M., Barladeanu, C. and Rueger, S. (2009) DYNIQX: A novel meta-search engine for the web, International Journal of Information Studies, 1, 1, pp. 2-27, 2009 International Journal of Information Studies (IJIS)

Zhu, J., Song, D. and Rueger, S. (2009) Integrating multiple windows and document features for expert finding, Journal of the American Society for Information Science and Technology, 60, 4, pp. 694-715, John Wiley & Sons, Inc.

Zhu, J., Song, D., Rueger, S. and Huang, X. (2008) Modeling document features for expert finding, The 17th ACM Conference on Information and Knowledge Management (CIKM'08), Napa Valley, CA, USA

Llorente, A., Overell, S., Liu, H., Hu, R., Rae, A., Zhu, J., Song, D. and Rueger, S. (2008) Exploiting Term Co-occurrence for Enhancing Automated Image Annotation, Proceedings of the 9th Workshop of the Cross-Language Evaluation Forum (CLEF 2008), LNCS 5706, pp. 632--639, Springer

Overell, S., Llorente, A., Liu, H., Hu, R., Rae, A., Zhu, J., Song, D. and Rueger, S. (2008) MMIS at ImageCLEF 2008: Experiments combining Different Evidence Sources, Working notes for the CLEF 2008 Workshop, Aarhus, Denmark

Overell, S., Llorente, A., Liu, H., Hu, R., Rae, A., Zhu, J., Song, D. and Rüger, S. (2008) MMIS at ImageCLEF 2008: experiments combining different evidence sources, CLEF workshop, Aarhus, Denmark

Zhu, J., Song, D., Eisenstadt, M., Barladeanu, C. and Rueger, S. (2008) Dyniqx: a novel meta-search engine for metadata based cross search, 1st International Conference on the Applications of Digital Information and Web Technologies (ICADIWT 2008), Ostrava, Czech Republic

Zhu, J., Song, D. and Rueger, S. (2007) Integrating document features for entity ranking, Workshop: 6th International Workshop of the Initiative for the Evaluation of XML Retrieval (INEX 2007), Dagstuhl, Germany

Zhu, J., , d. and Rueger, S. (2007) The Open University at TREC 2007 Enterprise Track, The Sixteenth Text REtrieval Conference (TREC2007), Gaithersburg, Maryland USA

Zhu, J., (2007) Social Search With Missing Data: Which Ranking Algorithm?, Journal of Digital Information Management special issue on Web Information Retrieval, eds. Pit.Pichappan, Keith van Rijsbergen, and Iadh Ounis, Digital Information Research Foundation

Zhu, J., Goncalves, A., Uren, V., Motta, E., Pacheco, R., Song, D. and Rueger, S. (2007) Entity Association Discovery in Organizational Information Space, IEEE International Conference on Machine Learning and Cybernetics 2007, Hong Kong, China

Zhu, J., Goncalves, A., Uren, V., Motta, E., Pacheco, R., Song, D. and Rueger, S. (2007) Community Relation Discovery by Named Entities, International Conference on Machine Learning and Cybernetics 2007, Hong Kong, China, IEEE

Zhu, J., (2007) Relation Discovery from Web Data for Competency Management, Web Intelligence and Agent Systems: An International Journal, 5, 4, IOS Press

Zhu, J., Song, D., Rueger, S., Eisenstadt, M. and Motta, E. (2006) The Open University at TREC 2006 Enterprise Track Expert Search Task, The Fifteenth Text REtrieval Conference (TREC 2006), Gaithersburg, Maryland USA, National Institute of Standards and Technology, USA

Zhu, J., Song, D., Rüger, S., Eisenstadt, M. and Motta, E. (2006) The Open University at TREC 2006 Enterprise Track ExpertSearch Task, Fifteenth Text REtrieval Conference (TREC2006), Gaithersburg, Maryland USA

Goncalves, A., Zhu, J., Song, D., Uren, V. and Pacheco, R. (2006) LRD: Latent Relation Discovery for Vector Space Expansion and Information Retrieval, Advances in Web-Age Information Management: 7th International Conference, WAIM 2006, June 17-19, 2006. LNCS 4016/2006, Hong Kong, China, pp. 122 - 133, Springer Verlag

Zhu, J., Eisenstadt, M., Song, D. and Denham, C. (2006) Exploiting semantic association to answer 'vague queries', Fourth International Conference on Active Media Technology, Brisbane, Australia

Lei, Y., Sabou, M., Lopez, V., Zhu, J., Uren, V. and Motta, E. (2006) An Infrastructure for Acquiring High Quality Semantic Metadata, the 3rd European Semantic Web Conference (ESWC 2006), Budva, Montenegro

Zhu, J., Eisenstadt, M., Song, D. and Denham, C. (2006) Exploiting Semantic Association To Answer Vague Queries, Fourth International Conference on Active Media Technology, Brisbane, Australia

Zhu, J., (2005) BuddyFinder-CORDER: Leveraging Social Networks for Matchmaking by Opportunistic Discovery, Workshop: Workshop on Semantic Network Analysis at International Semantic Web Conference (ISWC2005), Galway, Ireland

Zhu, J., (2005) CORDER: COmmunity Relation Discovery by named Entity Recognition, Poster at International Conference on Knowledge Capture, Banff, Canada Proceedings of Third International Conference on Knowledge Capture (K Cap'2005), pp. 219-220, ACM

Zhu, J., Goncalves, A., Uren, V., Motta, E. and Pacheco, R. (2005) Mining Web Data for Competency Management, IEEE/WIC/ACM International Conference on Web Intelligence 2005, Compiegne University of Technology, France Proceedings of 2005 IEEE/WIC/ACM International Conference on Web Intelligence 2005 (WI'2005), eds. Andrzej Skowron, Rakesh Agrawal, Michael Luck, Takahira Yamaguchi, Pierre Morizet-Mahoudeaux, Jiming Liu, Ning Zhong, pp. 94-100, IEEE Computer Society

Zhu, J., Uren, V. and Motta, E. (2005) ESpotter: Adaptive Named Entity Recognition for Web Browsing, Professional Knowledge Management Conference (WM2005), Kaiserslautern, Germany Proceedings of Professional Knowledge Management Conference (WM 2005), eds. Klaus Dieter Althoff Andreas Dengel Ralph Bergmann Markus Nick Thomas Roth Berghofer, pp. 518-529, Springer Verlag LNAI

Uren, V., Zhu, J. and Goncalves, A. (2005) Applying Mined Social Networks to Knowledge Management Scenarios, AIS SIGSEMIS Bulletin

Zhu, J., Uren, V. and Motta, E. (2004) ESpotter: A Prototype System for Adaptive Named Entity Recognition Supporting Web Browsing, Whittlebury Hall, Northamptonshire, UK Proceedings of the 14th International Conference on Knowledge Engineering and Knowledge Management (EKAW'2004), Springer-Verlag

Zhu, J., Uren, V. and Motta, E. (2004) ESpotter: A Prototype System for Adaptive Named Entity Recognition Supporting Web Browsing, Fifteenth ACM Conference on Hypertext and Hypermedia (Hypertext'04), Santa Cruz, USA Proceedings of the Fifteenth ACM Conference on Hypertext and Hypermedia (Hypertext'04)

Zhu, J., Hong, J. and Hughes, J. (2004) PageCluster: Mining Conceptual Link Hierarchies from Web Log Files for Adaptive Web Site Navigation, acm transactions on internet technology, eds. Gary William Flake, Paolo Frasconi, C. Lee Giles, Marco Maggini, 4, 2, pp. 185-208, ACM

Zhu, J. (2003) Mining Web Site Link Structures for Adaptive Web Site Navigation and Search, University of Ulster at Jordanstown

Zhu, J., Hong, J. and Hughes, J. (2002) Using Markov Chains for Link Prediction in Adaptive Web Sites, Soft Ware 2002: First International Conference on Computing in an Imperfect World, Belfast, UK Proceedings of Soft Ware 2002: First International Conference on Computing in an Imperfect World, eds. David W. Bustard, Weiru Liu, and Roy Sterritt, pp. 60-73, springer verlag publishing house

Zhu, J., Hong, J. and Hughes, J. (2002) Using Markov Models for Web Site Link Prediction, Thirteenth ACM conference on Hypertext and Hypermedia (Hypertext?02), College Park, MD, USA Proceedings of the Thirteenth ACM conference on Hypertext and Hypermedia (Hypertext?02), pp. 169 170, acm publishing house

Fong, J. and Zhu, J. (2002) Online Web Mining Transactions Association Rules using Frame Metadata Model, journal of applied systems studies, 3, 2, pp. 313-328, Cambridge International Science Publishing

Zhu, J., Hong, J. and Hughes, J. (2001) PageRate: Counting Web users' votes, Twelfth ACM conference on Hypertext and Hypermedia (Hypertext'01), AArhus, Denmark Proceedings of the Twelfth ACM conference on Hypertext and Hypermedia (Hypertext'01), pp. 131-132, acm publishing house

Zhu, J. (2001) Using Markov Chains for Structural Link Prediction in Adaptive Web Sites, 8th International Conference on User Modeling, Sonthofen, Germany Proceedings of 8th International Conference on User Modeling (UM'2001), eds. M Bauer P J Gmytrasiewicz J Vassileva, 2109, pp. 298 300, springer verlag publishing house