2026 Ophir Frieder: Computer Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Computer Science	63	2705	2624	1343	1293	587	20476

Research.com Recognitions

2020 - Fellow of the Indian National Academy of Engineering (INAE)
2018 - Member of Academia Europaea
2013 - Fellow, National Academy of Inventors
2008 - Edward J. McCluskey Technical Achievement Award, IEEE Computer Society For pioneering development of Scalable Information Systems
2005 - ACM Fellow For contributions to search systems for distributed data.
2003 - Fellow of the American Association for the Advancement of Science (AAAS)
Member of the European Academy of Sciences and Arts
Member of the European Academy of Sciences and Arts
Member of the European Academy of Sciences and Arts

Overview

Ophir Frieder is affiliated with Georgetown University in the United States and specializes in computer science with a focus on artificial intelligence, information systems, computer vision and pattern recognition, computer networks and communications, and health information management. The scholar's work spans multiple subfields and covers a range of topics including topic modeling, caching and content delivery, advanced image and video retrieval techniques, software engineering research, speech and dialogue systems, machine learning and algorithms, and recommender systems and techniques.

Their recent publications reflect a focus on conversational search, caching strategies, and representation learning in computational contexts. Key papers include:

Adaptive utterance rewriting for conversational search, 2021, published in Information Processing & Management
Caching Historical Embeddings in Conversational Search, 2022, published in ACM Transactions on the Web
Topical result caching in web search engines, 2020, published in Information Processing & Management
Goldilocks: Just-Right Tuning of BERT for Technology-Assisted Review, 2021, published in arXiv (Cornell University)
Self-Supervised Representation Learning on Electronic Health Records with Graph Kernel Infomax, 2024, published in ACM Transactions on Computing for Healthcare

Their frequent coauthors include Raffaele Perego, Sean MacAvaney, Nicola Tonellotto, Ida Mele, and Cristina Ioana Muntean, highlighting collaborative work in their research outputs.

Ophir Frieder has published extensively in venues such as arXiv (Cornell University), Information Processing & Management, Journal of Nonlinear and Variational Analysis, ACM Transactions on the Web, and ACM Transactions on Computing for Healthcare. The distribution of publications indicates a consistent engagement with both journal and conference outlets in computer science and related areas.

Awards and recognitions received by the researcher include being a Fellow of the Indian National Academy of Engineering (2020), a Member of Academia Europaea (2018), a Fellow of the National Academy of Inventors (2013), recipient of the Edward J. McCluskey Technical Achievement Award by the IEEE Computer Society (2008) for work in scalable information systems, an ACM Fellow (2005) for contributions to search systems for distributed data, a Fellow of the American Association for the Advancement of Science (2003), and membership in the European Academy of Sciences and Arts.

Best Publications

Distributed construction of connected dominating set in wireless ad hoc networks

Peng-Jun Wan;Khaled M. Alzoubi;Ophir Frieder

1453
Citations
Information Retrieval: Algorithms and Heuristics

David A. Grossman;Ophir Frieder

1216
Citations
Coverage in wireless ad hoc sensor networks

Xiang-Yang Li;Peng-Jun Wan;O. Frieder

827
Citations
Minimum-energy broadcasting in static ad hoc wireless networks

P. J. Wan;G. Călinescu;X. Y. Li;O. Frieder

700
Citations
Minimum-energy broadcast routing in static ad hoc wireless networks

P.-J. Wan;G. Calinescu;X.-Y. Li;O. Frieder

585
Citations
Message-optimal connected dominating sets in mobile ad hoc networks

Khaled M. Alzoubi;Peng-Jun Wan;Ophir Frieder

550
Citations
Hate speech detection: Challenges and solutions.

Sean MacAvaney;Hao Ren Yao;Eugene Yang;Katina Russell

538
Citations
Collection statistics for fast duplicate document detection

Abdur Chowdhury;Ophir Frieder;David Grossman;Mary Catherine McCabe

440
Citations
Hourly analysis of a very large topically categorized web query log

Steven M. Beitzel;Eric C. Jensen;Abdur Chowdhury;David Grossman

432
Citations
Multiple engine information retrieval and visualization system

Kevin L. Fox;Ophir Frieder;Margaret M. Knepper;Robert A. Killam

413
Citations
Repeatable evaluation of search services in dynamic environments

Eric C. Jensen;Steven M. Beitzel;Abdur Chowdhury;Ophir Frieder

413
Citations
New distributed algorithm for connected dominating set in wireless ad hoc networks

K.M. Alzoubi;Peng-Jun Wan;O. Frieder

411
Citations
Localized algorithms for energy efficient topology in wireless ad hoc networks

Wen-Zhan Song;Yu Wang;Xiang-Yang Li;Ophir Frieder

406
Citations
Efficient interference-aware TDMA link scheduling for static wireless networks

Weizhao Wang;Yu Wang;Xiang-Yang Li;Wen-Zhan Song

405
Citations
Distributed heuristics for connected dominating sets in wireless ad hoc networks

Khaled M. Alzoubi;Peng-Jun Wan;Ophir Frieder

386
Citations
Building a test collection for complex document information processing

D. Lewis;G. Agam;S. Argamon;O. Frieder

339
Citations
Geometric spanners for wireless ad hoc networks

K. Alzoubi;X.-Y. Li;Y. Wang;P.-J. Wan

321
Citations
On arabic search: improving the retrieval effectiveness via a light stemming approach

Mohammed Aljlayl;Ophir Frieder

268
Citations
On-the-fly program modification: systems for dynamic updating

M.E. Segal;O. Frieder

264
Citations
Information Retrieval

Unknown

227
Citations
Parallel document clustering process

Anthony S. Ruocco;Ophir Frieder

222
Citations

Frequent Co-Authors

Abdur Chowdhury Aura

Peng-Jun Wan Illinois Institute of Technology

Xiang-Yang Li University of Science and Technology of China

Yu Wang Temple University

Raffaele Perego Institute of Information Science and Technologies

Tarek El-Ghazawi George Washington University

Wen-Zhan Song University of Georgia

Hava T. Siegelmann University of Massachusetts Amherst

Howard J. Federoff University of California, Irvine

Xiaohua Jia City University of Hong Kong

External Links

Personal website of Ophir Frieder Google Scholar page

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