Dr Leif Azzopardi

- Lecturer (School of Computing Science)
telephone: 01413301631
email: Leif.Azzopardi@glasgow.ac.uk
Personal site: http://www.dcs.gla.ac.uk/~leif
Biography:
Dr. Leif Azzopardi is currently an RCUK Research Fellow / Lecturer and member of the Information Retrieval Group within the School of Computing Science at the University of Glasgow. Previously, Dr Azzopardi was a Post Doctoral Researcher within iLab at the University of Strathclyde in 2006, and ILPS at the University of Amsterdam in 2005. He received his Ph.D. in Computing Science from the University of Paisley in 2005, where he was supervised by Prof. Mark Girolami, Prof. Malcolm Crowe and Prof. Keith van Rijsbergen. Prior to this he received First Class Honours Degree in Information Science from the University of Newcastle, Australia, 2001. He is currently a committee member of the BCS Information Retrieval Specialist Group and previously the past Chair from 2006-2008. He is a lifetime member of the ACM and member of the BCS and IEEE.
Research Interests:
- Economic Models of Search and Interaction
- Accessibility and Findability of Information
- Formal Models specifically Probabilistic Language Models for Information Retrieval
- Evaluation of Information Retrieval Systems
- Information Retrieval for Children.
2010
Elliott, D., Glassey, R. , Polajnar, T. , and Azzopardi, L. (2010) Finding and filtering information for children. In: 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2010, Geneva, Switzerland.
Zuccon, G., Azzopardi, L. , Hauff, C., and Van Rijsbergen, C. (2010) Estimating interference in the QPRP for subtopic retrieval. In: 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2010, Geneva, Switzerland.
Song, D et al. (2010) How Quantum Theory is Developing the Field of Information Retrieval. In: Quantum Informatics Symposium, AAAI Fall Symposia Series, 11-13 November, Arlington, Virginia, USA. (In Press)
Azzopardi, L., and Bache, R. (2010) On the relationship between effectiveness and accessibility. In: 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2010, Geneva, Switzerland.
Azzopardi, L., Fernández, R., and Losada, D. (2010) Improving sentence retrieval with an importance prior. In: 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2010, Geneva, Switzerland.
Azzopardi, L., Vanderbauwhede, W. , and Joho, H. (2010) Search system requirements of patent analysts. In: Proceedings of the 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 13-19 July 2010, Geneva, Switzerland. Association for Computing Machinery, New York, USA, pp. 775-776. ISBN 9781450301534
Hauff, C., Azzopardi, L. , Hiemstra, D., and de Jong, F. (2010) Query performance prediction: evaluation contrasted with effectiveness. Lecture Notes in Computer Science, 5993 . pp. 204-216. ISSN 0302-9743 (doi:10.1007/978-3-642-12275-0_20)
Hauff, C., Hiemstra, D., Azzopardi, L. , and de Jong, F. (2010) A case for automatic system evaluation. Lecture Notes in Computer Science, 5993 . pp. 153-165. ISSN 0302-9743 (doi:10.1007/978-3-642-12275-0_16)
Hauff, C., Jong, F., Kelly, D., and Azzopardi, L. (2010) Query quality: user ratings and system predictions. In: 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2010, Geneva, Switzerland.
Joho, H., Azzopardi, L.A. , and Vanderbauwhede, W. (2010) A survey of patent users. In: Proceeding of the Third Symposium on Information Interaction in Context: IIiX '10, New Brunswick, New Jersey, USA. Association for Computing Machinery, New York, USA, pp. 13-24. ISBN 9781450302470
Zuccon, G., and Azzopardi, L. (2010) Using the quantum probability ranking principle to rank interdependent documents. Lecture Notes in Computer Science, 5993 . pp. 357-369. ISSN 0302-9743 (doi:10.1007/978-3-642-12275-0_32)
Zuccon, G., Azzopardi, L. , and Van Rijsbergen, C. (2010) The quantum probability ranking principle for information retrieval. Lecture Notes in Computer Science, 5766 . pp. 232-240. ISSN 0302-9743 (doi:10.1007/978-3-642-04417-5_21)
2009
Shokouhi, M., Azzopardi, L. , and Thomas, P. (2009) Effective query expansion for federated search. In: 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2009, Boston, USA.
Zuccon, G., Azzopardi, L. , and Van Rijsbergen, C. (2009) Revisiting logical imaging for information retrieval. In: 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2009, Boston, USA.
Balog, K., Azzopardi, L. , and de Rijke, M. (2009) A language modeling framework for expert finding. Information Processing and Management, 45 (1). pp. 1-19. ISSN 0306-4573 (doi:10.1016/j.ipm.2008.06.003)
Azzopardi, L. (2009) Query side evaluation: an empirical analysis of effectiveness and effort. In: 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2009, Boston, USA.
Azzopardi, L. (2009) Usage based effectiveness measures: monitoring application performance in information retrieval. In: 18th ACM Conference on Information and Knowledge Management, 2-6 Nov 2009, Hong Kong.
Azzopardi, L., and Owens, C. (2009) Search engine predilection towards news media providers. In: 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval , 19-23 Jul 2009, Boston, USA.
Azzopardi, L., Vanderbauwhede, W. , and Moadeli, M. (2009) Developing energy efficient filtering systems. In: Allan, J. and Aslam, J. (eds.) Proceedings of the 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval: 19-23 July 2009, Boston, MA, USA. Association for Computing Machinery, New York, USA, pp. 664-665. ISBN 9781605584836
Balog, K., Azzopardi, L. , and Rijke, M. (2009) Resolving person names in web people search. In: King, I. and Baeza-Yates, R. (eds.) Weaving Services and People on the World Wide Web. Springer, pp. 301-323. ISBN 9783642005701
Graf, E., Azzopardi, L. , and Van Rijsbergen, C. (2009) Automatically generating queries for prior art search. In: CLEF 2009 Workshop, 2009, Corfu, Greece.
Hauff, C., and Azzopardi, L. (2009) When is query performance prediction effective? In: 32nd International ACM SIGIR Conference on Research and Development in Information Retrieval, 19-23 Jul 2009, Boston, USA.
Hauff, C., Azzopardi, L. , and Hiemstra, D. (2009) The combination and evaluation of query performance prediction methods. Lecture Notes in Computer Science, 5478 . pp. 301-312. ISSN 0302-9743 (doi:10.1007/978-3-642-00958-7_28)
Hauff, C., Hiemstra, D., Jong, F., and Azzopardi, L. (2009) Relying on topic subsets for system ranking estimation. In: 18th ACM Conference on Information and Knowledge Management, 2-6 Nov 2009, Hong Kong.
Huertas-Rosero, A., Azzopardi, L. , and Van Rijsbergen, C. (2009) Eraser lattices and semantic contents. In: Proceedings of the 3rd International Symposium on Quantum Interaction, 25-27 Mar 2009, Saarbrücken, Germany.
Vanderbauwhede, W., Azzopardi, L. , and Moadeli, M. (2009) FPGA-accelerated information retrieval: high-efficiency document filtering. In: Proceedings of 2009 International Conference on Field Programmable Logic and Applications, 2009, FPL, 2009. IEEE Computer Society, Piscataway, N.J., USA, pp. 417-422. ISBN 9781424438921
Zuccon, G., Azzopardi, L. , and Van Rijsbergen, C. (2009) Semantic spaces: measuring the distance between different subspaces. Lecture Notes in Computer Science, 5494 . pp. 225-236. ISSN 0302-9743 (doi:10.1007/978-3-642-00834-4_19)
2008
Azzopardi, L., and Vinay, V. (2008) Retrievability: an evaluation measure for higher order information access tasks. In: 17th ACM Conference on Information and Knowledge Management, 26-30 Oct 2008, Napa Valley, California, USA.
Losada, D., and Azzopardi, L. (2008) Assessing multivariate Bernoulli models for information retrieval. ACM Transactions on Information Systems, 26 (3). ISSN 1046-8188 (doi:10.1145/1361684.1361690)
Losada, D., and Azzopardi, L. (2008) An analysis on document length retrieval trends in language modeling smoothing. Information Retrieval, 11 (2). pp. 109-138. ISSN 1386-4564 (doi:10.1007/s10791-007-9040-x)
Baillie, M., Azzopardi, L. , and Ruthven, I. (2008) Evaluating epistemic uncertainty under incomplete assessments. Information Processing and Management, 44 (2). pp. 811-837. ISSN 0306-4573 (doi:10.1016/j.ipm.2007.04.002)
Azzopardi, L., and Vinay, V. (2008) Accessibility in information retrieval. Lecture Notes in Computer Science, 4956 . pp. 482-489. ISSN 0302-9743 (doi:10.1007/978-3-540-78646-7_46)
Azzopardi, L., and Vinay, V. (2008) Document accessibility: evaluating the access afforded to a document by the retrieval system. In: Workshop on Novel Methodologies for Evaluation in Information Retrieval at 30th European Conference for Information Retrieval (ECIR 2008), 30 Mar 2008, Glasgow, Scotland.
Balog, K., Azzopardi, L. , and de Rijke, M. (2008) Personal name resolution of web people search. In: Workshop NLP Challenges in the Information Explosion Era (NLPIX 2008), 22 April 2008, Beijing, China.
Graf, E., and Azzopardi, L. (2008) A methodology for building a patent test collection for prior art search. In: The Second International Workshop on Evaluating Information Access (EVIA), 16 Dec 2008, Tokyo, Japan.
Huertas-Rosero, A., Azzopardi, L. , and Van Rijsbergen, C. (2008) Characterising through erasing: a theoretical framework for representing documents inspired by quantum theory. In: Quantum Interaction Symposium 2008, 26-28 Mar 2008, Oxford, UK.
Lioma, C., Moens, M., and Azzopardi, L. (2008) Collaborative annotation for pseudo relevance feedback. In: ECIR’08 Workshop on: Exploiting Semantic Annotations for Information Retrieval, 30 Mar 2008, Glasgow, Scotland.
Losada, D.E., Azzopardi, L. , and Baillie, M. (2008) Revisiting the relationship between document length and relevance. In: 17th ACM Conference on Information and Knowledge Management, 26-30 Oct 2008, Napa Valley, California, USA.
Ruthven, I., Baillie, M., Azzopardi, L. , Bierig, M., Nicol, E., Sweeney, S., and Yaciki, M. (2008) Contextual factors affecting the utility of surrogates within exploratory search. Information Processing and Management, 44 (2). pp. 437-462. ISSN 0306-4573 (doi:10.1016/j.ipm.2007.08.002)
2007
Azzopardi, L. (2007) Position paper: towards evaluating the user experience of interactive information access systems. In: Web Information-Seeking and Interaction SIGIR 2007 WISI Workshop, 27 Jul 2007, Amsterdam, The Netherlands.
Azzopardi, L., and Losada, D. (2007) Fairly retrieving documents of all lengths. In: 1st International Conference on the Theory of Information Retrieval, 18-20 Oct 2007, Budapest, Hungary.
Azzopardi, L., and Roelleke, T. (2007) Explicitly considering relevance within the language modeling framework. In: 1st International Conference on the Theory of Information Retrieval, 18-20 Oct 2007, Budapest, Hungary.
Azzopardi, L., de Rijke, M., and Balog, K. (2007) Building simulated queries for known-item topics: an analysis using six european languages. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 23-27 July 2007, Amsterdam, The Netherlands.
Baillie, M., Azzopardi, L. , and Ruthven, I. (2007) A retrieval evaluation methodology for incomplete relevance assessments. Lecture Notes in Computer Science, 4425 . pp. 271-282. ISSN 0302-9743 (doi:10.1007/978-3-540-71496-5_26)
Balog, K., Azzopardi, L. , Kamps, J., and de Rijke, M. (2007) Overview of WebCLEF 2006. Lecture Notes in Computer Science, 4730 . pp. 803-819. ISSN 0302-9743 (doi:10.1007/978-3-540-74999-8_101)
Balog, K., Azzopardi, L. , and de Rijke, M. (2007) Language modeling techniques for web people search. In: 4th International Workshop on Semantic Evaluations, 23-24 Jun 2007, Prague, Czech Republic .
Balog, K., Bogers, T., Azzopardi, L. , de Rijke, M., and van den Bosch, A. (2007) Broad expertise retrieval in sparse data environments. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 23-27 July 2007, Amsterdam, The Netherlands.
Ruthven, I., Azzopardi, L. , Baillie, M., Bierig, R., Nicol, E., Sweeney, S., and Yakici, M. (2007) Intra-assessor consistency in question answering. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 23-27 July 2007, Amsterdam, The Netherlands.
Shokouhi, M., Baillie, M., and Azzopardi, L. (2007) Updating collection representations for federated search. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 23-27 July 2007, Amsterdam, The Netherlands.
2006
Azzopardi, L. (2006) Incorporating context within the language modeling approach for ad hoc information retrieval. ACM SIGIR Forum, 40 (1). ISSN 0163-5840 (doi:10.1145/1147197.1147211)
Azzopardi, L., and Losada, D. (2006) An efficient computation of the multiple-Bernoulli language model. Lecture Notes in Computer Science, 3936 . pp. 480-483. ISSN 0302-9743 (doi:10.1007/11735106_46)
Azzopardi, L., and de Rijke, M. (2006) Query intention acquisition: a case study on automatically inferring structured queries. In: 6th Dutch-Belgian Information Retrieval Workshop, 13-14 Mar 2006, Delft, The Netherlands.
Azzopardi, L., and de Rijke, M. (2006) Automatic construction of known-item finding test beds. In: Annual ACM Conference on Research and Development in Information Retrieval, 6-11 August 2006, Seattle, Washington.
Baillie, M., Azzopardi, L. , and Crestani, F. (2006) Adaptive query-based sampling of distributed collections. Lecture Notes in Computer Science, 4209 . pp. 316-328. ISSN 0302-9743 (doi:10.1007/11880561_26)
Baillie, M., Azzopardi, L. , and Crestani, F. (2006) Towards better measures: evaluation of estimated resource description quality for distributed IR. In: 1st International Conference on Scalable Information Systems , 30 May - 1 Jun 2006, Hong Kong.
Baillie, M., Azzopardi, L. , and Crestani, F. (2006) Adaptive query-based sampling for distributed IR. In: Annual ACM Conference on Research and Development in Information Retrieval, 6-11 August 2006, Seattle, Washington.
Baillie, M., Azzopardi, L. , and Crestani, F. (2006) An evaluation of resource description quality measures. In: Symposium on Applied Computing, 23-27 April, Dijon, France.
Balog, K., Azzopardi, L. , and Rijke, M. (2006) Formal models for expert finding in enterprise corpora. In: Dumais, S., Efthimiadis, E.N., Hawking, D. and Järvelin, K. (eds.) SIGIR '06: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, University of Washington, Seattle, WA, USA. Association for Computing Machinery, New York, USA, pp. 43-50. ISBN 9781595933690
Simeoni, F., Azzopardi, L. , and Crestani, F. (2006) An application framework for distributed information retrieval. Lecture Notes in Computer Science, 4312 . pp. 192-201. ISSN 0302-9743 (doi:10.1007/11931584_22)
2005
Azzopardi, L., Balog, K., and de Rijke, M. (2005) Language modeling approaches for enterprise tasks. In: The Fourteenth Text Retrieval Conference, 15-18 Nov 2005, Gaithersburg, Maryland, USA.
Azzopardi, L., Girolami, M. , and Crowe, M. (2005) Probabilistic hyperspace analogue to language. In: SIGIR 2005: Proceedings of the Twenty-Eighth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, August 15-19, 2005, Salvador, Brazil. Association for Computing Machinery, New York, USA, pp. 575-576. ISBN 9781595930347
Bailey, A., Ruthven, I., and Azzopardi, L. (2005) Evaluating user studies in information access. In: 5th International Conference on Conceptions of Library and Information Sciences, COLIS 2005, Jun 2005, Glasgow, UK.
Hauff, C., and Azzopardi, L. (2005) Age dependent document priors in link structure analysis. Lecture Notes in Computer Science, 3408 . pp. 552-554. ISSN 0302-9743 (doi:10.1007/978-3-540-31865-1_48)
Meij, E., IJzereef, L., Azzopardi, L. , Kamps, J., and de Rijke, M. (2005) Combining thesauri-based methods for biomedical retrieval. In: Fourteenth Text Retrieval Conference, 15-18 Nov 2005, Gaithersburg, Maryland, USA.
2004
Azzopardi, L (2004) An investigation into the utility of the probabilistic interpretation of the Hyper space Analogue to Language (HAL). Computing and Information Systems Technical Report, 27, University of Paisley N/a .
Azzopardi, L., Girolami, M. , and Van Rijsbergen, C. (2004) User biased document language modelling. In: 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 25-29 Jul 2004, Sheffield, UK.
Azzopardi, L., Girolami, M. , and Van Rijsbergen, C. (2004) Topic based language models for ad hoc information retrieval. In: IEEE International Joint Conference on Neural Networks., 25-29 July 2004, Budapest.
2003
Azzopardi, L., Girolami, M. , and Van Rijsbergen, K. (2003) Investigating the relationship between language model perplexity and IR precision-recall measures. In: Annual ACM Conference on Research and Development in Information Retrieval, July 28 - August 1 2003, Toronto, Canada.
2002
Azzopardi, L (2002) Preprocessing data in the classification process. Computer Science Departmental Journal, Paisley University .
