Ophir Frieder

Personal Homepage
http://ir.cs.georgetown.edu/~ophir/
Employer
()
Email
ophir@cs.georgetown.edu

Publication Statistics

Publication period start
1990
Publication period end
2010
Number of co-authors
64

Co-authors
Number of publications with favourite co-authors

Productive Colleagues
Most productive colleagues in number of publications

Publications

Merhav, Yuval, Mesquita, Filipe, Barbosa, Denilson, Yee, Wai Gen, Frieder, Ophir (2010): Incorporating global information into named entity recognition systems using relational co. In: Proceedings of the 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2010, . pp. 883-884. http://doi.acm.org/10.1145/1835449.1835664

Soo, Jason J., Frieder, Ophir (2010): On Foreign Name Search. In: Gurrin, Cathal, He, Yulan, Kazai, Gabriella, Kruschwitz, Udo, Little, Suzanne, Roelleke, Thomas, Rüger, Stefan M., Rijsbergen, Keith van (eds.) Advances in Information Retrieval - 32nd European Conference on IR Research - ECIR 2010 March 28-31, 2010, Milton Keynes, UK. pp. 483-494. http://dx.doi.org/10.1007/978-3-642-12275-0_42

Goharian, Nazli, Frieder, Ophir, Yee, Wai Gen, Mundrawala, Jay (2010): Enriching Peer-to-Peer File Descriptors Using Association Rules on Query Logs. In: Gurrin, Cathal, He, Yulan, Kazai, Gabriella, Kruschwitz, Udo, Little, Suzanne, Roelleke, Thomas, Rüger, Stefan M., Rijsbergen, Keith van (eds.) Advances in Information Retrieval - 32nd European Conference on IR Research - ECIR 2010 March 28-31, 2010, Milton Keynes, UK. pp. 636-639. http://dx.doi.org/10.1007/978-3-642-12275-0_65

Yee, Wai Gen, Yates, Andrew, Frieder, Ophir, Moehrle, Armin (2010): eduKEN: a tool for fine-grained video comment collection and analysis. In: Proceedings of the 2010 International Conference on the World Wide Web , 2010, . pp. 1325-1328. http://doi.acm.org/10.1145/1772690.1772913

Urbain, Jay, Frieder, Ophir, Goharian, Nazli (2008): Passage relevance models for genomics search. In: Shanahan, James G., Amer-Yahia, Sihem, Manolescu, Ioana, Zhang, Yi, Evans, David A., Kolcz, Aleksander, Choi, Key-Sun, Chowdhury, Abdur (eds.) Proceedings of the 17th ACM Conference on Information and Knowledge Management - CIKM 2008 October 26-30, 2008, Napa Valley, California, USA. pp. 1357-1358. http://doi.acm.org/10.1145/1458082.1458277

Soo, Jason J., Cathey, Rebecca, Frieder, Ophir, Amir, Michlean J., Frieder, Gideon (2008): Yizkor books: a voice for the silent past. In: Shanahan, James G., Amer-Yahia, Sihem, Manolescu, Ioana, Zhang, Yi, Evans, David A., Kolcz, Aleksander, Choi, Key-Sun, Chowdhury, Abdur (eds.) Proceedings of the 17th ACM Conference on Information and Knowledge Management - CIKM 2008 October 26-30, 2008, Napa Valley, California, USA. pp. 1337-1338. http://doi.acm.org/10.1145/1458082.1458266

Jensen, Eric C., Beitzel, Steven M., Chowdhury, Abdur, Frieder, Ophir (2008): Repeatable evaluation of search services in dynamic environments. In ACM Transactions on Information Systems, 26 (1) pp. 1. http://doi.acm.org/10.1145/1292591.1292592

Jia, Dongmei, Yee, Wai Gen, Frieder, Ophir (2008): Spam characterization and detection in peer-to-peer file-sharing systems. In: Shanahan, James G., Amer-Yahia, Sihem, Manolescu, Ioana, Zhang, Yi, Evans, David A., Kolcz, Aleksander, Choi, Key-Sun, Chowdhury, Abdur (eds.) Proceedings of the 17th ACM Conference on Information and Knowledge Management - CIKM 2008 October 26-30, 2008, Napa Valley, California, USA. pp. 329-338. http://doi.acm.org/10.1145/1458082.1458128

Nguyen, Linh Thai, Yee, Wai Gen, Frieder, Ophir (2008): Adaptive distributed indexing for structured peer-to-peer networks. In: Shanahan, James G., Amer-Yahia, Sihem, Manolescu, Ioana, Zhang, Yi, Evans, David A., Kolcz, Aleksander, Choi, Key-Sun, Chowdhury, Abdur (eds.) Proceedings of the 17th ACM Conference on Information and Knowledge Management - CIKM 2008 October 26-30, 2008, Napa Valley, California, USA. pp. 1241-1250. http://doi.acm.org/10.1145/1458082.1458246

Urbain, Jay, Goharian, Nazli, Frieder, Ophir (2008): Probabilistic passage models for semantic search of genomics literature. In JASIST - Journal of the American Society for Information Science and Technology, 59 (12) pp. 2008-2023. http://dx.doi.org/10.1002/asi.20896

Merhav, Yuval, Frieder, Ophir (2008): On multiword entity ranking in peer-to-peer search. In: Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2008, . pp. 859-860. http://doi.acm.org/10.1145/1390334.1390542

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Frieder, Ophir, Grossman, David A. (2007): Temporal analysis of a very large topically categorized Web query log. In JASIST - Journal of the American Society for Information Science and Technology, 58 (2) pp. 166-178. http://dx.doi.org/10.1002/asi.20464

Cathey, Rebecca, Jensen, Eric C., Beitzel, Steven M., Frieder, Ophir, Grossman, David A. (2007): Exploiting parallelism to support scalable hierarchical clustering. In JASIST - Journal of the American Society for Information Science and Technology, 58 (8) pp. 1207-1221. http://dx.doi.org/10.1002/asi.20596

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Frieder, Ophir (2007): Varying approaches to topical web query classification. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2007, . pp. 783-784. http://doi.acm.org/10.1145/1277741.1277907

Nguyen, Linh Thai, Jia, Dongmei, Yee, Wai Gen, Frieder, Ophir (2007): An analysis of peer-to-peer file-sharing system queries. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2007, . pp. 855-856. http://doi.acm.org/10.1145/1277741.1277943

Beitzel, Steven M., Jensen, Eric C., Lewis, David D., Chowdhury, Abdur, Frieder, Ophir (2007): Automatic classification of Web queries using very large unlabeled query logs. In ACM Transactions on Information Systems, 25 (2) pp. 9. http://doi.acm.org/10.1145/1229179.1229183

Aqeel, Syed Uzair, Beitzel, Steven M., Jensen, Eric C., Grossman, David A., Frieder, Ophir (2006): On the development of name search techniques for Arabic. In JASIST - Journal of the American Society for Information Science and Technology, 57 (6) pp. 728-739. http://dx.doi.org/10.1002/asi.20323

Argamon, S., Agam, G., Frieder, Ophir, Grossman, D., Lewis, D., Sohn, G., Voorhees, K. (2006): A complex document information processing prototype. In: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2006, . pp. 599-600. http://doi.acm.org/10.1145/1148170.1148274

Lewis, D., Agam, G., Argamon, S., Frieder, Ophir, Grossman, D., Heard, J. (2006): Building a test collection for complex document information processing. In: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2006, . pp. 665-666. http://doi.acm.org/10.1145/1148170.1148307

Stein, Sterling Stuart, Argamon, Shlomo, Frieder, Ophir (2006): The effect of OCR errors on stylistic text classification. In: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2006, . pp. 701-702. http://doi.acm.org/10.1145/1148170.1148325

Jensen, Eric C., Beitzel, Steven M., Frieder, Ophir, Chowdhury, Abdur (2005): A framework for determining necessary query set sizes to evaluate web search effectiveness. In: Proceedings of the 2005 International Conference on the World Wide Web , 2005, . pp. 1176-1177. http://doi.acm.org/10.1145/1062745.1062926

Liu, Fang, Liu, Shuang, Yu, Clement T., Meng, Weiyi, Frieder, Ophir, Grossman, David A. (2005): Database selection in intranet mediators for natural language queries. In: Herzog, Otthein, Schek, Hans-Jorg, Fuhr, Norbert (eds.) Proceedings of the 2005 ACM CIKM International Conference on Information and Knowledge Management October 31 - November 5, 2005, Bremen, Germany. pp. 229-230. http://doi.acm.org/10.1145/1099554.1099601

Beitzel, Steven M., Jensen, Eric C., Frieder, Ophir, Grossman, David A., Lewis, David D., Chowdhury, Abdur, Kolcz, Aleksandr (2005): Automatic web query classification using labeled and unlabeled training data. In: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2005, . pp. 581-582. http://doi.acm.org/10.1145/1076034.1076138

Jensen, Eric C., Beitzel, Steven M., Grossman, David A., Frieder, Ophir, Chowdhury, Abdur (2005): Predicting query difficulty on the web by learning visual clues. In: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2005, . pp. 615-616. http://doi.acm.org/10.1145/1076034.1076155

Beitzel, Steven M., Jensen, Eric C., Frieder, Ophir, Chowdhury, Abdur, Pass, Greg (2005): Surrogate scoring for improved metasearch precision. In: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2005, . pp. 583-584. http://doi.acm.org/10.1145/1076034.1076139

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Grossman, David A., Frieder, Ophir (2004): Evaluation of filtering current news search results. In: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2004, . pp. 494-495. http://doi.acm.org/10.1145/1008992.1009087

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Grossman, David A., Frieder, Ophir, Goharian, Nazli (2004): Fusion of effective retrieval strategies in the same information retrieval system. In JASIST - Journal of the American Society for Information Science and Technology, 55 (10) pp. 859-868. http://dx.doi.org/10.1002/asi.20012

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Grossman, David A., Frieder, Ophir (2004): Hourly analysis of a very large topically categorized web query log. In: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2004, . pp. 321-328. http://doi.acm.org/10.1145/1008992.1009048

Beitzel, Steven M., Jensen, Eric C., Chowdhury, Abdur, Grossman, David A., Frieder, Ophir (2003): Using manually-built web directories for automatic evaluation of known-item retrieval. In: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2003, . pp. 373-374. http://doi.acm.org/10.1145/860435.860507

Agun, S. Kagan, Frieder, Ophir (2003): HAT: a hardware assisted TOP-DOC inverted index component. In: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2003, . pp. 447-448. http://doi.acm.org/10.1145/860435.860544

Chowdhury, Abdur, McCabe, M. Catherine, Grossman, David A., Frieder, Ophir (2002): Document normalization revisited. In: Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2002, . pp. 381-382. http://doi.acm.org/10.1145/564376.564454

Alzoubi, Khaled M., Wan, Peng-Jun, Frieder, Ophir (2002): New Distributed Algorithm for Connected Dominating Set in Wireless Ad Hoc Networks. In: HICSS 2002 , 2002, . pp. 297. http://csdl.computer.org/comp/proceedings/hicss/2002/1435/09/14350297abs.htm

Frieder, Ophir (2002): On scalable information retrieval systems. In: Proceedings of the 2002 ACM CIKM International Conference on Information and Knowledge Management November 4-9, 2002, McLean, VA, USA. pp. 1. http://doi.acm.org/10.1145/584792.584793

Li, Xiang-Yang, Wan, Peng-Jun, Wang, Yu, Frieder, Ophir (2002): Sparse Power Efficient Topology for Wireless Networks. In: HICSS 2002 , 2002, . pp. 296. http://csdl.computer.org/comp/proceedings/hicss/2002/1435/09/14350296babs.htm

Chowdhury, Abdur, Frieder, Ophir, Grossman, David A., McCabe, Mary Catherine (2002): Collection statistics for fast duplicate document detection. In ACM Transactions on Information Systems, 20 (2) pp. 171-191. http://doi.acm.org/10.1145/506309.506311

Jensen, Eric C., Beitzel, Steven M., Pilotto, Angelo J., Goharian, Nazli, Frieder, Ophir (2002): Parallelizing the buckshot algorithm for efficient document clustering. In: Proceedings of the 2002 ACM CIKM International Conference on Information and Knowledge Management November 4-9, 2002, McLean, VA, USA. pp. 684-686. http://doi.acm.org/10.1145/584792.584919

Aljlayl, Mohammed, Frieder, Ophir (2002): On arabic search: improving the retrieval effectiveness via a light stemming approach. In: Proceedings of the 2002 ACM CIKM International Conference on Information and Knowledge Management November 4-9, 2002, McLean, VA, USA. pp. 340-347. http://doi.acm.org/10.1145/584792.584848

Chowdhury, Abdur, Frieder, Ophir, Grossman, David A., McCabe, Catherine (2001): Analyses of multiple-evidence combinations for retrieval strategies. In: Proceedings of the 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2001, . pp. 394-395. http://doi.acm.org/10.1145/383952.384034

Aljlayl, Mohammed, Frieder, Ophir (2001): Effective Arabic-English Cross-Language Information Retrieval via Machine-Readable Diction. In: Proceedings of the 2001 ACM CIKM International Conference on Information and Knowledge Management November 5-10, 2001, Atlanta, Georgia, USA. pp. 295-302. http://

Goda, K., Tamura, T., Kitsuregawa, M., Chowdhury, A., Frieder, Ophir (2001): Query optimization for vector space problems. In: Proceedings of the 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2001, . pp. 416-417. http://doi.acm.org/10.1145/383952.384064

McCabe, M. Catherine, Lee, Jinho, Chowdhury, Abdur, Grossman, David A., Frieder, Ophir (2000): On the Design and Evaluation of a Multi-Dimensional Approach to Information Retrieval. In: Proceedings of the 23rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 2000, . pp. 363-365. http://www.acm.org/pubs/articles/proceedings/ir/345508/p363-mccabe/p363-mccabe.pdf

Fox, Kevin L., Frieder, Ophir, Knepper, Margaret M., Snowberg, Eric J. (1999): SENTINEL: A Multiple Engine Information Retrieval and Visualization System. In JASIST - Journal of the American Society for Information Science and Technology, 50 (7) pp. 616-625.

Lundquist, Carol, Frieder, Ophir, Holmes, David O., Grossman, David A. (1999): A Parallel Relational Database Management System Approach to Relevance Feedback in Informa. In JASIST - Journal of the American Society for Information Science and Technology, 50 (5) pp. 413-426.

McCabe, M. Catherine, Chowdhury, Abdur, Grossman, David A., Frieder, Ophir (1999): A Unified Environment for Fusion of Information Retrieval Approaches. In: Proceedings of the 1999 ACM CIKM International Conference on Information and Knowledge Management November 2-6, 1999, Kansas City, Missouri, USA. pp. 330-334. http://doi.acm.org/10.1145/319950.320024

Grossman, David A., Frieder, Ophir, Holmes, David O., Roberts, David C. (1997): Integrating Structured Data and Text: A Relational Approach. In JASIST - Journal of the American Society for Information Science and Technology, 48 (2) pp. 122-132.

Ruocco, Anthony S., Frieder, Ophir (1997): Clustering and Classification of Large Document Bases in a Parallel Environment. In JASIST - Journal of the American Society for Information Science and Technology, 48 (10) pp. 932-943.

Lundquist, Carol, Grossman, David A., Frieder, Ophir (1997): Improving Relevance Feedback in the Vector Space Model. In: Golshani, Forouzan, Makki, Kia (eds.) Proceedings of the Sixth International Conference on Information and Knowledge Management CIKM97 November 10-14, 1997, Las Vegas, Nevada. pp. 16-23. http://doi.acm.org/10.1145/266714.266844

Barlos, Fotios, Frieder, Ophir (1994): A Join Ordering Approach for Multicomputer Relational Databases with Highly Skewed Date. In: HICSS 1994 , 1994, . pp. 253-262.

Woods, W. Addison, Moser, H. Douglas, Frieder, Ophir, Kantor, Paul B. (1994): A Case for Reconfigurable Parallel Architectures for Information Retrieval. In: Proceedings of the Third International Conference on Information and Knowledge Management CIKM94 November 29 - December 2, 1994, Gaithersburg, Maryland. pp. 57-63. http://doi.acm.org/10.1145/191246.191261

Barlos, Fotios, Frieder, Ophir (1993): On the Development of a site Selection Optimizer for Distributed and Parallel Database Sys. In: Bhargava, Bharat K., Finin, Timothy W., Yesha, Yelena (eds.) CIKM 93 - Proceedings of the Second International Conference on Information and Knowledge Management November 1-5, 1993, Washington, DC, USA. pp. 684-693. http://doi.acm.org/10.1145/170088.170454

Stytz, Martin R., Frieder, Ophir (1992): Volume-primitive based three-dimensional medical image rendering: Customized architectural. In Computers & Graphics, 16 (1) pp. 85-100. http://dx.doi.org/10.1016/0097-8493(92)90075-7

Frieder, Ophir, Siegelmann, Hava Tova (1991): On the Allocation of Documents in Multiprocessor Information Retrieval Systems. In: Proceedings of the Fourteenth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , 1991, . pp. 230-239. http://www.acm.org/pubs/articles/proceedings/ir/122860/p230-frieder/p230-frieder.pdf

Frieder, Ophir (1990): Multiprocessor Algorithms for Relational-Database Operators on Hypercube Systems. In IEEE Computer, 23 (11) pp. 13-28.

Grossman, David A., Frieder, Ophir (1998): Information Retrieval: Algorithms and Heuristics, Kluwer Academic Publishers,