2026 Joseph Y. Halpern: Computer Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	National Ranking	Publications	Citations
Computer Science	100	361	197	475	55697

Research.com Recognitions

2019 - Member of the National Academy of Engineering For methods of reasoning about knowledge, belief, and uncertainty and their applications to distributed computing and multiagent systems.
2015 - Fellow of the American Academy of Arts and Sciences
2008 - ACM AAAI Allen Newell Award For fundamental advances in reasoning about knowledge, belief, and uncertainty and their groundbreaking applications in artificial intelligence, computer science, game theory, economics, and the philosophy of science.
2005 - Fellow of the American Association for the Advancement of Science (AAAS)
2002 - ACM Fellow For contributions to the modeling of and reasoning about uncertainty.
1993 - Fellow of the Association for the Advancement of Artificial Intelligence (AAAI) For sustained excellence in theoretical research on the logics of and relationships among knowledge, common knowledge, belief and probability.

Overview

Joseph Y. Halpern is affiliated with Cornell University in the United States, specializing in the fields of Computer Science and Decision Sciences. Their research encompasses a variety of topics including Bayesian Modeling and Causal Inference, Game Theory and Applications, Experimental Behavioral Economics Studies, Logic, Reasoning, and Knowledge, Decision-Making and Behavioral Economics, Cryptography and Data Security, and Auction Theory and Applications.

Their recent publications illustrate a focus on theoretical aspects of reasoning and decision-making. Notable papers include:

Reasoning about Causal Models with Infinitely Many Variables, 2022, Proceedings of the AAAI Conference on Artificial Intelligence
Sequential Equilibrium in Games of Imperfect Recall, 2021, ACM Transactions on Economics and Computation
Causality, Responsibility and Blame in Team Plans, 2020, arXiv (Cornell University)

Halpern has frequently collaborated with several researchers. Among the most common co-authors are Ivan Geffner, Hana Chockler, Spencer Peters, Yuval Heller, and Meir Friedenberg.

Their work has appeared in several publication venues multiple times, including arXiv (Cornell University), Electronic Proceedings in Theoretical Computer Science, Proceedings of the AAAI Conference on Artificial Intelligence, Leibniz-Zentrum für Informatik (Schloss Dagstuhl), and SSRN Electronic Journal.

The research focus spans diverse subfields such as Artificial Intelligence, Management Science and Operations Research, Safety Research, Economics and Econometrics, and Cognitive Neuroscience.

Joseph Y. Halpern has received recognition from professional organizations, including being named a Member of the National Academy of Engineering in 2019 for contributions related to methods of reasoning about knowledge, belief, and uncertainty and their applications to distributed computing and multiagent systems. Additional honors include Fellowship in the American Academy of Arts and Sciences in 2015, the ACM AAAI Allen Newell Award in 2008, Fellow of the American Association for the Advancement of Science in 2005, ACM Fellow in 2002, and Fellow of the Association for the Advancement of Artificial Intelligence in 1993. These awards reflect sustained work in areas linked to knowledge, belief, uncertainty, and their implications for artificial intelligence, computer science, game theory, economics, and philosophy of science.

Best Publications

Reasoning About Knowledge

Ronald Fagin;Joseph Y. Halpern;Yoram Moses;Moshe Y. Vardi

6071
Citations
Reasoning About Knowledge

Ronald Fagin;Joseph Y. Halpern;Moshe Y. Vardi;Yoram Moses

5845
Citations
Knowledge and common knowledge in a distributed environment

Joseph Y. Halpern;Yoram Moses

1967
Citations
Reasoning about Uncertainty

Joseph Y. Halpern

1776
Citations
“Sometimes” and “not never” revisited: on branching versus linear time temporal logic

E. Allen Emerson;Joseph Y. Halpern

1739
Citations
Belief, awareness, and limited reasoning

R. Fagin;J. Y. Halpern

1317
Citations
A guide to completeness and complexity for modal logics of knowledge and belief

Joseph Y. Halpern;Yoram Moses

1204
Citations
Gossip-based ad hoc routing

Z.J. Haas;J.Y. Halpern;Li Li

1125
Citations
Causes and explanations: A structural-model approach. Part I: Causes

Joseph Y. Halpern;Judea Pearl

1101
Citations
An analysis of first-order logics of probability

Joseph Y. Halpern

977
Citations
A logic for reasoning about probabilities

R. Fagin;J.Y. Halpern;N. Megiddo

898
Citations
Decision procedures and expressiveness in the temporal logic of branching time

E. A. Emerson;Joseph Y. Halpern

798
Citations
Gossip-based ad hoc routing

Zygmunt J. Haas;Joseph Y. Halpern;Li Li

776
Citations
Minimum-energy mobile wireless networks revisited

L. Li;J.Y. Halpern

691
Citations
A propositional modal logic of time intervals

Joseph Y. Halpern;Yoav Shoham

668
Citations
Analysis of a cone-based distributed topology control algorithm for wireless multi-hop networks

Li Li;Joseph Y. Halpern;Paramvir Bahl;Yi-Min Wang

584
Citations
Reasoning about knowledge and probability

Ronald Fagin;Joseph Y. Halpern

504
Citations
A guide to the modal logics of knowledge and belief: preliminary draft

Joseph Y. Halpern;Yoram Moses

482
Citations
Distributed computing meets game theory: robust mechanisms for rational secret sharing and multiparty computation

Ittai Abraham;Danny Dolev;Rica Gonen;Joe Halpern

466
Citations
Proceedings of the 20th conference on Uncertainty in artificial intelligence

Christopher Meek;Max Chickering;Joseph Halpern

319
Citations
Causes and Explanations: A Structural-Model Approach: Part 1: Causes

Joseph Y. Halpern;Riccardo Pucella

230
Citations
Gossip Based Ad-Hoc Routing

Zygmunt Haas;Joseph Y. Halpern;Erran L. Li

0
Citations

Frequent Co-Authors

Rafael Pass Cornell University

Ronald Fagin IBM (United States)

Yoram Moses Technion – Israel Institute of Technology

Moshe Y. Vardi Rice University

Daphne Koller insitro Inc.

Nir Friedman Weizmann Institute of Science

Danny Dolev Hebrew University of Jerusalem

Fahiem Bacchus University of Toronto

Ittai Abraham VMware

Albert R. Meyer MIT

External Links

Wikipedia of Joseph Y. Halpern Personal website of Joseph Y. Halpern Google Scholar page

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