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Dr Iadh Ounis

Profile
Publications

Reader (Computing Science)

telephone: 01413305652
email: Iadh.Ounis@glasgow.ac.uk

Personal site: http://www.dcs.gla.ac.uk/~ounis

Biography:
Dr Iadh Ounis is currently a Reader in the School of Computing Science at the University of Glasgow. Previously, he was a Research Fellow at the National University of Singapore, and a Post Doctoral Researcher within CLIPS-IMAG at the University of Grenoble. He holds a PhD degree in Computer Science from the University Joseph Fourier, Grenoble, France and an MSc in Computer Science from ENSIMAG, National Polytechnic Institute of Grenoble. He is an active researcher in information retrieval (the science of search engines), and serves as a programme committee member of all major IR-related conferences. Over the years, he has supervised numerous PhD students and postdoctoral research assistants, and has authored over 150 refereed publications.

Dr Ounis is the principal investigator of the renowned high-performance and scalable Terrier search engine, the open source version of which has been widely used across the world by both academia and industry. Since 2006, Dr Ounis has been co-ordinating the international Blog & Microblog track initiatives within TREC (NIST, USA), which explore information seeking behaviour within the blogosphere and microblogging environments. Dr Ounis is a member of the editorial board of the Information Processing & Management journal, a member of the advisory board of the Forum for Information Retrieval Evaluation, and has chaired a number of major information retrieval-related events and initiatives such as ESSIR 2007 and ECIR 2008. He is currently the General Chair of the premier 20th ACM Conference on Information and Knowledge Management (CIKM), which will be held in Glasgow in 2011.

Research Interests:
- Web and enterprise search engines
- Large-scale information retrieval systems
- Opinion finding and results diversification
- Searching and mining within electronic health records
- Social media retrieval (blog, twitter, news, etc).

Jump to: 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | Forthcoming Publications

Number of items: 73.

2012

Macdonald, C., Ounis, I. , and Tonellotto, N. (2012) Learning to predict response times for online query scheduling. In: 35th International ACM SIGIR Conference on Research and Development in Information Retrieval SIGIR 2012, 12-16 Aug 2012, Portland OR, USA. (In Press)

Soldatos, J., Draief, M., Macdonald, C. , and Ounis, I. (2012) Multimedia search over integrated social and sensor networks. In: 21st International Conference Companion on World Wide Web, Lyon, France.

2011

Gil-Costa, V., Santos, R.L.T., Macdonald, C. , and Ounis, I. (2011) Sparse spatial selection for novelty-based search result diversification. Lecture Notes in Computer Science, 7024 . pp. 344-355. ISSN 0302-9743 (doi:10.1007/978-3-642-24583-1_34)

Macdonald, C, Ounis, I. , and Tonellotto, N. (2011) Upper-bound approximations for dynamic pruning. ACM Transactions on Information Systems, 29 (4). pp. 1-28. ISSN 1046-8188 (doi:10.1145/2037661.2037662)

Macdonald, C., and Ounis, I. (2011) Learning models for ranking aggregates. In: European Conference in Information Retrieval (ECIR 2011), 18-21 April 2011, Dublin, Ireland.

Macdonald, C., Tonellotto, N., and Ounis, I. (2011) On upper bounds for dynamic pruning. In: 3rd International Conference on the Theory of Information Retrieval (ICTIR 2011), Bertinoro, Italy.

McCreadie, R., Macdonald, C., and Ounis, I. (2011) MapReduce indexing strategies: studying scalability and efficiency. Information Processing and Management . ISSN 0306-4573 (doi:10.1016/j.ipm.2010.12.003) (In Press)

McCreadie, R., Macdonald, C. , and Ounis, I. (2011) A learned approach for ranking news in real-time using the blogosphere. In: 18th International Conference on String Processing and Information Retrieval (SPIRE 2011), Pisa, Italy.

Santos, R.L.T., Macdonald, C. , and Ounis, I. (2011) Aggregated search result diversification. In: 3rd International Conference on the Theory of Information Retrieval (ICTIR 2011), Bertinoro, Italy.

Santos, R.L.T., Macdonald, C. , and Ounis, I. (2011) Effectiveness beyond the first crawl tier. In: 20th ACM Conference on Information and Knowledge Management (CIKM 2011), 24-28 October 2011, Glasgow, UK.

Santos, R.L.T., Macdonald, C. , and Ounis, I. (2011) Intent-aware search result diversification. In: 34th international ACM SIGIR Conference on Research and Development in Information Retrieval, Beijing, China.

Tonellotto, N., Macdonald, C. , and Ounis, I. (2011) Query efficiency prediction for dynamic pruning. In: LSDS-IR: Large-Scale and Distributed Systems for Information Retrieval 2011, 28 October 2011, Glasgow .

2010

Santos, R.L.T., Macdonald, C. , and Ounis, I. (2010) Selectively diversifying Web search results. In: Proceedings of the 19th ACM international conference on Information and knowledge management (CIKM'10), 26-30 October 2010, Toronto, ON, Canada.

Gray, A., Gray, N., Hall, C.W., and Ounis, I. (2010) Finding the right term: Retrieving and exploring semantic concepts in astronomical vocabularies. Information Processing and Management, 46 (4). pp. 470-478. ISSN 0306-4573 (doi:10.1016/j.ipm.2009.09.004)

Macdonald, C., and Ounis, I. (2010) The influence of the document ranking in expert search. Information Processing and Management . ISSN 0306-4573 (doi:10.1016/j.ipm.2010.09.004) (In Press)

Santos, R.L.T., Macdonald, C. , and Ounis, I. (2010) Exploiting query reformulations for web search result diversification. In: 19th International Conference on World Wide Web, 26-30 April 2010, Raleigh NC.

Santos, R.L.T., Peng, J., Macdonald, C. , and Ounis, I. (2010) Explicit search result diversification through sub-queries. Lecture Notes in Computer Science, 5993 . pp. 87-99. ISSN 0302-9743 (doi:10.1007/978-3-642-12275-0_11)

2009

Azman, A., and Ounis, I. (2009) Browsing recommendation based on the intertemporal choice model. Lecture Notes in Computer Science, 5822 . pp. 215-226. ISSN 0302-9743 (doi:10.1007/978-3-642-04957-6_19)

He, B., and Ounis, I. (2009) Finding good feedback documents. In: Conference on Information and Knowledge Management, 2-6 Nov 2009, Hong Kong, China.

He, B., Peng, J. , and Ounis, I. (2009) Fitting score distribution for blog opinion retrieval. In: Proceedings of the 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval. ACM, pp. 688-689. ISBN 9781605584836

Macdonald, C., and Ounis, I. (2009) On perfect document rankings for expert search. Proceedings of the 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval . pp. 740-741.

Macdonald, C., and Ounis, I. (2009) The influence of the document ranking in expert search. In: 18th ACM Conference on Information and Knowledge Management, 2-6 Nov 2009, Hong Kong.

Macdonald, C., Ounis, I. , and Soboroff, I. (2009) Is spam an issue for opinionated blog post search? In: 32nd international ACM SIGIR conference on research and development in information retrieval , 19-23 Jul 2009, Boston, USA.

McCreadie, R., Macdonald, C. , and Ounis, I. (2009) On single-pass indexing with MapReduce. Proceedings of the Annual International ACMSIGIR Conference on Research and Development in Information Retrieval . 742-743 .

Mccreadie, R., Mcdonald, C., and Ounis, I. (2009) Comparing distributed indexing: to MapReduce or not? In: In 7th Workshop on Large-Scale Distributed Systems for Information Retrieval, 2009.

Peng, J., He, B. , and Ounis, I. (2009) Predicting the usefulness of collection enrichment for enterprise search. Lecture Notes in Computer Science, 5766 . pp. 366-370. ISSN 0302-9743 (doi:10.1007/978-3-642-04417-5_41)

Peng, J., Macdonald, C. , He, B. , and Ounis, I. (2009) A study of selective collection enrichment for enterprise search. In: Conference on Information and Knowledge Management, Oct 26-30 2008, Napa Valley, California.

Santos, R.L.T., He, B. , Macdonald, C. , and Ounis, I. (2009) Integrating proximity to subjective sentences for blog opinion retrieval. In: Proceedings of the 31st European Conference on Information Retrieval (ECIR 2009), 6-9 April, 2009, Toulouse, France.

2008

Hannah, D., Macdonald, C. , and Ounis, I. (2008) Analysis of link graph compression techniques. Lecture Notes in Computer Science, 4956 . pp. 596-601. ISSN 0302-9743 (doi:10.1007/978-3-540-78646-7_62)

He, B., Macdonald, C. , He, J., and Ounis, I. (2008) An effective statistical approach to blog post opinion retrieval. In: 17th ACM Conference on Information and Knowledge Management, 26-30 Oct 2008, Napa Valley, California, USA.

He, B., Macdonald, C. , and Ounis, I. (2008) Ranking opinionated blog posts using OpinionFinder. In: 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 20-24 July 2008, Singapore.

He, B., Macdonald, C. , and Ounis, I. (2008) Retrieval sensitivity under training using different measures. In: 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 20-24 July 2008, Singapore.

Macdonald, C., Hannah, D. , and Ounis, I. (2008) High quality expertise evidence for expert search. Lecture Notes in Computer Science, 4956 . p. 283. ISSN 0302-9743 (doi:10.1007/978-3-540-78646-7_27)

Macdonald, C., He, B. , Ounis, I. , and Soboroff, I. (2008) Limits of opinion-finding baseline systems. In: SIGIR '08, 20-24 Jul 2008, Singapore.

Macdonald, C., and Ounis, I. (2008) Expert search evaluation by supporting documents. Lecture Notes in Computer Science, 4956 . pp. 555-563. ISSN 0302-9743 (doi:10.1007/978-3-540-78646-7_55)

Macdonald, C., and Ounis, I. (2008) Key blog distillation. In: 17th ACM Conference on Information and Knowledge Management, 26-30 Oct 2008, Napa Valley, California, USA.

Macdonald, C., and Ounis, I. (2008) Voting techniques for expert search. Knowledge and Information Systems, 16 (3). pp. 259-280. ISSN 0219-1377 (doi:10.1007/s10115-007-0105-3)

Peng, J., Macdonald, C., and Ounis, I. (2008) Automatic document prior feature selection for web retrieval. In: SIGIR '08, 20-24 Jul 2008, Singapore.

2007

Cacheda, F, Carneiro, V, Plachouras, V, and Ounis, I (2007) Performance analysis of distributed information retrieval architectures using an improved network simulation model. Information Processing and Management, 43 . pp. 204-224. (doi:10.1016/j.ipm.2006.06.002)

Cacheda, F., Carneiro, V., Plachouras, V., and Ounis, I. (2007) Performance comparison of clustered and replicated information retrieval systems. Lecture Notes in Computer Science, 4425 . pp. 124-135. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_14)

He, B, and Ounis, I (2007) Combining fields for query expansion and adaptive query expansion. Information Processing and Management, 43 . pp. 1294-1307. (doi:10.1016/j.ipm.2006.11.002)

He, B, and Ounis, I (2007) On setting the hyper-parameters of term frequency normalization for information retrieval. ACM Transactions on Information Systems, 25 . (doi:10.1145/1247715.1247719)

He, B., and Ounis, I. (2007) Setting per-field normalisation hyper-parameters for the named-page finding search task. Lecture Notes in Computer Science, 4425 . pp. 468-480. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_42)

Lioma, C., and Ounis, I. (2007) Extending weighting models with a term quality measure. Lecture Notes in Computer Science, 4726 . pp. 205-216. ISSN 1611-3349 (doi:10.1007/978-3-540-75530-2_19)

Lioma, C., and Ounis, I. (2007) Light syntactically-based index pruning for information retrieval. Lecture Notes in Computer Science, 4425 . pp. 88-100. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_11)

Macdonald, C., and Ounis, I. (2007) Using relevance feedback in expert search. Lecture Notes in Computer Science, 4425 . pp. 431-443. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_39)

Ounis, I, Lioma, C., Macdonald, C. , and Plachouras, V. (2007) Research directions in Terrier: a search engine for advanced retrieval on the Web. CEPIS Upgrade Journal, 8 (1).

Peng, J., and Ounis, I. (2007) Combination of document priors in web information retrieval. Lecture Notes in Computer Science, 4425 . pp. 732-736. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_80)

Plachouras, V., and Ounis, I. (2007) Multinomial randomness models for retrieval with document fields. Lecture Notes in Computer Science, 4425 . pp. 28-39. ISSN 1611-3349 (doi:10.1007/978-3-540-71496-5_6)

2006

Chang, YJ, Ounis, I , and Kim, M (2006) Query reformulation using automatically generated query concepts from a document space. Information Processing and Management, 42 . pp. 453-468. (doi:10.1016/j.ipm.2005.03.025)

He, B, and Ounis, I (2006) Query performance prediction. Information Systems, 31 . pp. 585-594. (doi:10.1016/j.is.2005.11.003)

MacDonald, C., and Ounis, I. (2006) Voting for candidates: adapting data fusion techniques for an expert search task. In: Proceedings of the 15th ACM International Conference on Information and Knowledge Management, 6-11 November 2006, Arlington, Virginia, USA.

Macdonald, C., and Ounis, I. (2006) Combining fields in known-item email search. In: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 6-11 August 2006, Seattle, Washington, USA.

Macdonald, C., and Ounis, I. (2006) The TREC Blogs06 Collection: Creating and Analysing a Blog Test Collection. Technical Report. Dept of Computing Science, University of Glasgow.

Macdonald, C., Plachouras, V., He, B. , Lioma, C., and Ounis, I. (2006) University of Glasgow at WebCLEF 2005: experiments in per-field normalisation and language specific stemming. Lecture Notes in Computer Science, 4022 . pp. 898-907. ISSN 1611-3349 (doi:10.1007/11878773_100)

Plachouras, V, Cacheda, F, and Ounis, I (2006) A decision mechanism for the selective combination of evidence in topic distillation. Information Retrieval, 9 . pp. 139-163. (doi:10.1007/s10791-006-7147-0)

2005

Plachouras, V., and Ounis, I. (2005) Dempster-Shafer theory for a query-biased combination of evidence on the web. Information Retrieval, 8 (2). pp. 197-218. ISSN 1386-4564 (doi:10.1007/s10791-005-5659-7)

Cacheda, F, Carneiro, V, Plachouras, V, and Ounis, I (2005) Network analysis for distributed information retrieval architectures. Advances in Information Retrieval, 3408 . pp. 527-529.

Cacheda, F, Plachouras, V, and Ounis, I (2005) A case study of distributed information retrieval architectures to index one terabyte of text. Information Processing and Management, 41 . pp. 1141-1161. (doi:10.1016/j.ipm.2004.05.002)

He, B., and Ounis, I. (2005) Term frequency normalisation tuning for BM25 and DFR models. Lecture Notes in Computer Science, 3408 . pp. 200-214. ISSN 1611-3349 (doi:10.1007/b107096)

He, B., and Ounis, I. (2005) A study of the Dirichlet Priors for term frequency normalisation. In: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 15-19 August 2005, Salvador, Brazil.

Lioma, C, He, B, Plachouras, V, and Ounis, I (2005) The University of Glasgow at CLEF 2004: French monolingual Information Retrieval with terrier. Multilingual Information Access For Text, Speech and Images, 3491 . pp. 253-259.

Ounis, I (2005) Automatically Building a Stopword List for an Information Retrieval System. Journal of Digital Information Management: Special Issue on the 5th Dutch-belgian Information Retrieval Workshop (dir'05) .

Ounis, I (2005) The Static Absorbing Model for Hyperlink Analysis on the Web. Journal of Web Engineering .

Ounis, I., Amati, G., Plachouras, V., He, B. , Macdonald, C. , and Johnson, D. (2005) Terrier information retrieval platform. Lecture Notes in Computer Science, 3405 . pp. 517-519. ISSN 1611-3349 (doi:10.1007/b107096)