Charles Clarke

Publications

2010

• Gordon Cormack, Stefan Büttcher and Charles Clarke. Information Retrieval: Implementing and Evaluating Search Engines. MIT Press, 2010.
• John Akinlabi Akinyemi, Charles L. A. Clarke and Maheedha Kolla. Towards a Collection-Based Results Diversification. In 9th RIAO Conference, Paris, 2010.
• Benjamin Lafreniere, Andrea Bunt, John S. Whissell, Charles L. A. Clarke and Michael Terry. Characterizing large-scale use of a direct manipulation application in the wild. In Graphics Interface, 2010.
• Kelly Y. Itakura and Charles L. A. Clarke. A framework for BM25F-based XML retrieval. In 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval,
• Charles L. A. Clarke, Nick Craswell, and Ian Soboroff. Overview of the TREC 2010 Web Track. In 19th Text REtrieval Conference, November 2010.

2009

• Charles L. A. Clarke, Gordon V. Cormack, Thomas R. Lynam, Chris Buckley and Donna Harman. Swapping documents and terms. Information Retrieval, 12(6):680-694, December 2009.
• Charles L. A. Clarke. Web question answering. Encyclopedia of Database Systems, pages 3485-3490, 2009.
• Azin Ashkan and Charles L. A. Clarke. Characterizing commercial intent. In 18th ACM Conference on Information and Knowledge Management, pages 67-76, November 2009.
• John Whissell, Charles L. A. Clarke, and Azin Ashkan. Clustering web queries. In 18th ACM Conference on Information and Knowledge Management, pages 899-908, November 2009.
• Azin Ashkan, Charles Clarke, Eugene Agichtein, and Qi Guo. Estimating ad clickthrough rate through query intent analysis. In IEEE/WIC/ACM International Conference on Web Intelligence, pages 222-229, September 2009.
• Qi Guo, Eugene Agichtein, Charles Clarke, and Azin Ashkan. In the mood to click? Inferring searcher receptiveness to advertising via modeling contextualized interactions. In IEEE/WIC/ACM International Conference on Web Intelligence, pages 222-229, September 2009.
• Charles L. A. Clarke, Maheedhar Kolla, and Olga Vechtomova. An effectiveness measure for ambiguous and underspecified queries. In 2nd International Conference on the Theory of Information Retrieval, pages 188-199, September 2009.
• Azin Ashkan and Charles Clarke. Term-based commercial intent analysis. In 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 800-801, July 2009.
• Kelly Itakura and Charles Clarke Using dynamic Markov compression to detect vandalism in the Wikipedia. In 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 822-823, July 2009.
• Gordon Cormack, Stefan Büttcher and Charles Clarke. Reciprocal rank fusion outperforms condorcet and individual rank learning methods. In 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 758-759, July 2009.
• Azin Ashkan, Charles L. A. Clarke, Eugene Agichtein, and Qi Guo. Classifying and characterizing query intent. In 31st European Conference on IR Research, pages 578-586, April 2009.
• Kelly Y. Itakura and Charles L. A. Clarke. University of Waterloo at INEX 2009. In 8th Workshop of the Initiative for the Evaluation of XML Retrieval, pages 331-341, December 2009.
• Charles L. A. Clarke, Nick Craswell, and Ian Soboroff. Overview of the TREC 2009 Web Track. In 18th Text REtrieval Conference, November 2009.

2008

• Stefan Büttcher and Charles L. A. Clarke. Hybrid Index Maintenance for Contiguous Inverted Lists. Information Retrieval, 11(3):175-207, June 2008.
• Charles L. A. Clarke, Maheedhar Kolla, Gordon V. Cormack, Olga Vechtomova, Azin Ashkan, Stefan Büttcher and Ian MacKinnon. Novelty and Diversity in Information Retrieval Evaluation. In 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 659-666, Singapore, 2008.
• Kelly Y. Itakura and Charles L. A. Clarke. University of Waterloo at INEX 2008. In 7th International Workshop of the Initiative for the Evaluation of XML Retrieval, pages 132-139, 2008

2007

• Charles L. A. Clarke, Eugene Agichtein, Susan Dumais and Ryen W. White. The influence of caption features on clickthrough patterns in Web search. In Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 135-142, Amsterdam, 2007.
• Stefan Büttcher, Charles L. A. Clarke, Peter C. K. Yeung and Ian Soboroff. Reliable information retrieval evaluation with incomplete and biased judgements. In Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 63-70, Amsterdam, 2007.
• Stefan Büttcher and Charles L. A. Clarke. Index compression is good, especially for random access. In Proceedings of the Sixteenth ACM Conference on Conference on Information and Knowledge management, pages 761-770, Lisbon, 2007.
• Jamie Callan, James Allan, Charles L. A. Clarke, Susan Dumais, David A. Evans, Mark Sanderson and ChengXiang Zhai. Meeting of the MINDS: An information retrieval research agenda. ACM SIGIR Forum, 41(2): 25-34, December 2007.
• Ryen W. White, Charles L. A. Clarke and Silviu Cucerzan. Comparing query logs and pseudo-relevance feedback for Web-search query refinement, In Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 831-832, Amsterdam, 2007.
• Peter C. K. Yeung, Charles L. A. Clarke and Stefan Büttcher. Improving retrieval accuracy by weighting document types with clickthrough data. In Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 759-760, Amsterdam, 2007.
• Peter C.K. Yeung and Luanne Freund and Charles L.A. Clarke. X-Site: A workplace search tool for software engineers. In Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, page 900, Amsterdam, 2007.
• Peter C. K. Yeung, Stefan Büttcher, Charles L. A. Clarke and Maheedhar Kolla. A Bayesian approach for learning document type relevance. In 29th European Conference on IR Research, pages 753-756, Rome, April 2007.
• S. Büttcher, C. L. A. Clarke, G. V. Cormack and T. R. Lynam. MultiText Legal Experiments at TREC 2007. Presented at Sixteenth Text REtrieval Conference November 2007.
• Kelly Y. Itakura and Charles L. A. Clarke. University of Waterloo at INEX 2007. In 6th International Workshop of the Initiative for the Evaluation of XML Retrieval , pages 417-425, 2007.

2006

• Stefan Büttcher and Charles L. A. Clarke. A Document-Centric Approach to Static Index Pruning In Text Retrieval Systems. In 15th ACM Conference on Information and Knowledge Management (CIKM), Arlington, Virginia, November 2006.
• Stefan Büttcher, Charles L. A. Clarke, and Peter C. K. Yeung. Index Pruning and Result Reranking: Effects on Adhoc Retrieval and Named Page Finding. Presented at the 15th Text REtrieval Conference (TREC 2006). Gaithersburg, Maryland, November 2006.
• Stefan Büttcher, Charles L. A. Clarke, and Ian Soboroff. The TREC 2006 Terabyte Track. Presented at the 15th Text REtrieval Conference (TREC 2006). Gaithersburg, Maryland, November 2006.
• Luanne Freund, Charles Clarke and Elaine Toms. Towards Genre Classification for IR in the Workplace. In First Symposium on Information Interaction in Context (IIiX), Copenhagen, October 2006.
• Stefan Büttcher, Charles L. A. Clarke, and Brad Lushman. Hybrid Index Maintenance for Growing Text Collections. In 29th ACM Conference on Research and Development in Information Retrieval (SIGIR 2006), Seattle, August 2006.
• Stefan Büttcher, Charles L. A. Clarke, and Brad Lushman. Term Proximity Scoring for Ad-Hoc Retrieval on Very Large Text Collections. Short paper in 29th ACM Conference on Research and Development in Information Retrieval (SIGIR 2006), Seattle, August 2006.
• Charles L. A. Clarke, Gordon V. Cormack, Thomas R. Lynam and Egidio L. Terra. Question Answering by Passage Selection. In Advances in Open Domain Question Answering , Tomek Strzalkowski (editor), Springer, 2006.
• Celine Latulipe, Ian Bell, Charles L.A. Clarke and Craig S. Kaplan. symTone: Two-Handed Manipulation of Tone Reproduction Curves. In Graphics Interface 2006 (GI2006), Québec City, June 2006. Best student paper award.
• Stefan Büttcher and Charles L. A. Clarke. Adding Full-Text Filesystem Search to Linux. ;login: The USENIX Magazine, 31(3), June 2006.
• Rob Good and Charles Clarke. Schema-Independent Retrieval from Heterogeneous Structured Text. In Mind Technologies: Humanities Computing and the Canadian Academic Community, Raymond Siemens (editor), University of Calgary Press, 2006.
• Stefan Büttcher and Charles L. A. Clarke. A Hybrid Approach to Index Maintenance in Dynamic Text Retrieval Systems. In 28th European Conference on Information Retrieval (ECIR 2006), London, UK, April 2006. Best student paper award.
• Celine Latulipe, Stephen Mann, Charles L.A. Clarke and Craig S.Kaplan. symSpline: Bimanual Symmetric Spline Manipulation. In 2006 Conference on Human Factors in Computing Systems (CHI 2006), Montréal, Québec, Canada, April 2006.

2005

• Stefan Büttcher and Charles L. A. Clarke. A Security Model for Full-Text Search in Multi-User Environments. In 4th USENIX Conference on File and Storage Technologies (USENIX FAST), San Francisco, December 2005.
• Stefan Büttcher and Charles L. A. Clarke. Efficiency vs. Effectiveness in Terabyte-Scale Information Retrieval. Presented at the 14th Text REtrieval Conference (TREC 2005). Gaithersburg, Maryland, November 2005.
• Charles L. A. Clarke, Falk Scholer and Ian Soboroff. The TREC 2005 Terabyte Track. Presented at the 14th Text REtrieval Conference (TREC 2005). Gaithersburg, Maryland, November 2005.
• Stefan Büttcher and Charles L. A. Clarke. Indexing Time vs. Query Time Trade-offs in Dynamic Information Retrieval Systems. Short paper in 14th ACM Conference on Information and Knowledge Management (CIKM), Bremen, Germany, October-November 2005.
• Celine Latulipe, Craig S. Kaplan and Charles L.A. Clarke. Bimanual and Unimanual Image Alignment: An Evaluation of Mouse-Based Techniques. In 18th Annual ACM Symposium on User Interface Software and Technology (UIST), Seattle, October 2005.
• Celine Latulipe, Craig S. Kaplan and Charles L.A. Clarke. Simultaneous Rotation and Translation. In 19th British HCI Group Annual Conference , The British Computer Society, Edinburgh, September 2005.
• Charles L. A. Clarke. Controlling Overlap in Content-Oriented XML Retrieval. In 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 441-448, Salvador, Brazil, August 2005.
• Luanne S. Freund, Elaine G. Toms and Charles L.A. Clarke. Modeling Task-Genre Relationships for IR in the Workplace. In 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 314-321, Salvador, Brazil, August 2005.
• Egidio Terra and Charles L. A. Clarke. Comparing Query Formulation and Lexical Affinity Replacements in Passage Retrieval. In ELECTRA: Methodologies and Evaluation of Lexical Cohesion Techniques in Real-World Applications, SIGIR Workshop, Salvador, Brazil, August 2005.
• Charles L. A. Clarke, Nick Craswell and Ian Soboroff. The TREC terabyte retrieval track , SIGIR Forum , 39(1):25,2005.
• G. V. Cormack, C. L. A. Clarke and C. R. Palmer. MultiText Experiments for TREC. In TREC: Experiments and Evaluation in Information Retrieval, Ellen M. Voorhees and Donna K. Harman (editors), MIT Press, 2005.
• Charles L. A. Clarke and Philip L. Tilker. MultiText Experiments for INEX 2004. In Advances in XML Information Retrieval, Third Workshop of the INitiative for the Evaluation of XML Retrieval, INEX 2004, Schloss Dagstuhl, Germany, December 2004. Published as Lecture Notes in Computer Science, Volume 3493, Springer, 2005.

2004

• Charles L. A. Clarke and Egidio L. Terra. Approximating the Top-m Passages in a Parallel Question Answering System. In Proceedings of the 13th ACM Conference on Information and Knowledge Management (CIKM), Washington DC, November 2004.
• Thomas R. Lynam, Chris Buckley, Charles L. A. Clarke and Gordon V. Cormack. A Multi-System Analysis of Document and Term Selection for Blind Feedback. In Proceedings of the 13th ACM Conference on Information and Knowledge Management (CIKM), Washington DC, November 2004.
• Egidio Terra and Charles L. A. Clarke. Scoring Missing Terms in Information Retrieval Tasks. In Proceedings of the 13th ACM Conference on Information and Knowledge Management (CIKM), Washington DC, November 2004.
• Stefan Büttcher, Charles L. A. Clarke, and Gordon V. Cormack. Domain-Specific Synonym Expansion and Validation for Biomedical Information Retrieval. Presented at the 2004 Text REtrieval Conference (TREC 2004), Gaithersburg, Maryland, November 2004.
• Charles Clarke, Nick Craswell and Ian Soboroff. Overview of the TREC 2004 Terabyte Track 2004 Text REtrieval Conference (TREC 2004), Gaithersburg, Maryland, November 2004.
• Egidio Terra and Charles L. A. Clarke. Fast Computation of Lexical Affinity Models. 20th International Conference on Computational Linguistics, Geneva, Switzerland, August 2004.
• Egidio Terra, Kevyn Collins-Thompson, Jamie Callan and Charles L. A. Clarke. The Effect of Document Retrieval Quality on Factoid Question Answering Performance. Short paper in Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Sheffield, UK, July 2004.
• Christopher A. Mennie and Charles L. A. Clarke. Giving Meaning to Macros. In Proceedings of the 12th International Workshop on Program Comprehension (IWPC), Bari, Italy, June 2004.
• Anthony Cox and Charles Clarke. Multi-Layered Data Modelling. Electronic Notes in Theoretical Computer Science, 94:71-79, Elsevier Science, 2004. A preliminary version of this paper was presented at the First International Workshop on Meta-Models and Schemas for Reverse Engineering, Victoria, BC, November, 2003.

2003

• Jamie Callan, Charles Clarke, Gordon Cormack, David Hawking and Alan Smeaton (editors). Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, ACM Press, 2003.
• David L. Yeung, Charles L. A. Clarke, Gordon V. Cormack, Thomas R. Lynam and Egidio L. Terra. Task-Specific Query Expansion. Presented at the 2003 Text REtrieval Conference (TREC 2003), Gaithersburg, Maryland, November 2003.
• Charles L. A. Clarke, Philip L. Tilker, Allen Quoc-Luan Tran, Kevin Harris, and Antonio S. Cheng. A Reliable Storage Management Layer for Distributed Information Retrieval Systems. In 12th ACM Conference on Information and Knowledge Management, New Orleans, November 2003.
• Charles L. A. Clarke and Egidio L. Terra. Passage Retrieval vs. Document Retrieval for Factoid Question Answering. Short paper in Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Toronto, Canada, July 2003.
• E. L. Terra and Charles Clarke. Frequency Estimates for Statistical Word Similarity Measures. In Proceedings of the 2003 Human Language Technology Conference, Edmonton, Canada, May 2003.
• Anthony Cox and Charles Clarke. Syntatic Approximation Using Interative Lexical Analysis. In Proceedings of the 11th International Workshop on Program Comprehension, Portland, Oregon, May 2003.

2002

• C. L. A. Clarke and G. V. Cormack and G. Kemkes and M. Laszlo and T. R. Lynam and E. L. Terra and P. L. Tilker. Statistical Selection of Exact Answers. Presented at the 2002 Text REtrieval Conference (TREC 2002), Gaithersburg, Maryland, November 2002.
• Chiasen Chung and Charles L. A. Clarke. Topic-Oriented Collaborative Crawling. In 11th ACM Conference on Information and Knowledge Management, McLean, Virginia, November 2002.
• C. L. A. Clarke, G. V. Cormack, M. Laszlo, T. R. Lynam and E. L. Terra. The Impact of Corpus Size on Question Answering Performance. Short paper in Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Tampere, Finland, August 2002. Poster version .
• Anthony Cox and Charles Clarke. Relocating XML Elements from Preprocessed to Unprocessed Code. In Proceedings of the 10th International Workshop on Program Comprehension, Paris, June 2002.

2001

• C. L. A. Clarke, G. V. Cormack, T. R. Lynam, C. M. Li and G. L. McLearn. Web Reinforced Question Answering . Presented at the 2001 Text REtrieval Conference (TREC 2001), Gaithersburg, Maryland, November 2001.
• Anthony Cox and Charles Clarke. Representing and Accessing Extracted Information. In Proceedings of the IEEE International Conference on Software Maintenance, Florence, Italy, November, 2001.
• Charles L. A. Clarke, Gordon V. Cormack and Thomas R. Lynam. Exploiting Redundancy in Question Answering. In Proceedings of the 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, New Orleans, September, 2001.
• T. R. Lynam, C. L. A. Clarke and G. V. Cormack. Information Extraction with Term Frequencies. Short paper in Proceedings of the Human Language Technology Conference, San Diego, 2001.

2000

• Anthony Cox and Charles Clarke. A Comparative Evaluation of Techniques for Syntactic Level Source Code Analysis. In Proceedings of the Seventh Asia-Pacific Software Engineering Conference, Singapore, December, 2000.
• C. L. A. Clarke, G. V. Cormack, D. I. E. Kisman and T. R. Lynam. Question Answering by Passage Selection . Presented at the Ninth Text REtrieval Conference (TREC-9), Gaithersburg, Maryland, November 2000.
• Charles L. A. Clarke and Gordon V. Cormack. Shortest Substring Retrieval and Ranking. ACM Transactions on Information Systems , 18(1):44-78, January 2000.
• Charles L. A. Clarke, Gordon V. Cormack and Elizabeth A. Tudhope. Relevance Ranking for One to Three Term Queries. Information Processing and Management , 36(2):291-311, 2000.
• Gordon V. Cormack, Charles L. A. Clarke, Christopher R. Palmer and Samuel S. L. To. Passage-Based Query Refinement. Information Processing and Management , 36(1):133-153, 2000.

1999

• G.V. Cormack, C.L.A. Clarke, C.R. Palmer and D.I.E. Kisman. Fast Automatic Passage Ranking. Presented at the Eight Text REtrieval Conference (TREC-8), Gaithersburg, Maryland, November 1999.
• Anthony Cox, Charles Clarke and Susan Sim. A Model Independent Source Code Repository. In Proceedings of CASCON'99 , Toronto, November 1999.
• Susan E. Sim, Charles L. A. Clarke, Ric C. Holt, and Anthony M. Cox. Browsing and Searching Software Architectures. In Proceedings of the International Conference on Software Maintenance , Oxford, England, September 1999.
• Charles Clarke, Anthony Cox and Susan Sim. Searching Program Source with a Structured Text Retrieval System. Short paper in Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Berkeley, August, 1999.
• Gordon V. Cormack, Charles L. A. Clarke, Christopher R. Palmer and Robert C. Good. The MultiText Retrieval System. Short paper in Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Berkeley, August, 1999.

1998

• Gordon V. Cormack, Christopher R. Palmer, Michael Van Biesbrouck and Charles L. A. Clarke. Deriving Very Short Queries for High Precision and Recall. Presented at the Seventh Text REtrieval Conference (TREC-7), Gaithersburg, Maryland, November 1998.
• Gordon V. Cormack, Christopher R. Palmer and Charles L. A. Clarke. Efficient Construction of Large Test Collections. In Proceedings of the 21st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , Melbourne, August, 1998.
• Susan E. Sim, Charles L. A. Clarke and Ric C. Holt. Archetypal Source Code Searching. In Proceedings of the Sixth IEEE International Workshop on Program Comprehension , Ischia, Italy, June 1998.

1997

• Charles L. A. Clarke and Gordon V. Cormack. On the use of Regular Expressions for Searching Structured Text. ACM Transactions on Programming Languages and Systems , 19:413-426. May 1997.
• Gordon V. Cormack, Charles L. A. Clarke, Christopher R. Palmer and Samuel S. L. To. Passage-Based Refinement. Presented at the Sixth Text REtrieval Conference (TREC-6), Gaithersburg, Maryland, November 1997.
• Charles L. A. Clarke, Gordon V. Cormack and Elizabeth A. Tudhope. Relevance Ranking for One to Three Term Queries. In Proceedings of the Fifth RIAO Conference , Montreal, June 1997.

1996

• Charles L. A. Clarke and Gordon V. Cormack. Interactive Substring Retrieval. Presented at the Fifth Text REtrieval Conference (TREC-5), Gaithersburg, Maryland, November 1996.
• R. C. Good, G. V. Cormack, C. L. A. Clarke and D. J. Taylor. A Robust Storage Systems Architecture. In 8th International Conference on Computing and Information, June 1996.
• Charles L. A. Clarke and David V. Mason. Compacting Garbage Collection can be Fast and Simple. Software-Practice and Experience , 26(2):177-194, February 1996.

1995

• Charles L. A. Clarke, G. V. Cormack and F. J. Burkowski. An Algebra for Structured Text Search and a Framework for its Implementation. The Computer Journal , 38(1):43-56, 1995.
• Charles L. A. Clarke, Gordon V. Cormack and Forbes J. Burkowski. Shortest Substring Ranking. Presented at the Fourth Text REtrieval Conference (TREC-4), Gaithersburg, Maryland, November 1995.
• Charles L. A. Clarke, Gordon V. Cormack and Forbes J. Burkowski. Schema-Independent Retrieval from Heterogeneous Structured Text. In Proceedings of the Fourth Annual Symposium on Document Analysis and Information Retrieval, Las Vegas, April 1995.

1991

• F. J. Burkowski, C. L. A. Clarke, S. C. Cowan and G. J. Vreugdenhil. Performance Evaluation of the Sylvan Multiprocessor Architecture. In Proceedings of the Symposium on Experiences with Distributed and Multiprocessor Systems (SEDMS II), Atlanta, March 1991.