Joseph Halpern
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Joseph 
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Halpern 
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Research profile
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The Hierarchical Approach to Modeling Knowledge and Common Knowledge
by Ronald Fagin & John Geanakoplos & Joseph Y. Halpern & Moshe Y. Vardi

Substantive Rationality and Backward Induction
by Joseph Y. Halpern

Characterizing the Common Prior Assumption
by Joseph Y. Halpern

Alternative Semantics for Unawareness
by Joseph Y. Halpern

On the NPCompleteness of Finding an Optimal Strategy in Games with Common Payoffs
by Francis C. Chu & Joseph Y. Halpern

Hypothetical knowledge and counterfactual reasoning
by Joseph Y. Halpern

The hierarchical approach to modeling knowledge and common knowledge
by John Geanakoplos & (**), Moshe Y. Vardi & Joseph Y. Halpern & Ronald Fagin

On the NPcompleteness of finding an optimal strategy in games with common payoffs
by Francis Chu & Joseph Halpern

Alternative Semantics for Unawareness
by Halpern, Joseph Y.

Characterizing the Common Prior Assumption
by Halpern, Joseph Y.

A computer scientist looks at game theory
by Halpern, Joseph Y.

On the Expected Value of Games with Absentmindedness
by Grove, Adam J. & Halpern, Joseph Y.

On Ambiguities in the Interpretation of Game Trees
by Halpern, Joseph Y.

Substantive Rationality and Backward Induction
by Halpern, Joseph Y.

Great Expectations. Part I: On the Customizability of Generalized Expected Utility
by Francis Chu & Joseph Halpern

Interactive unawareness revisited
by Halpern, Joseph Y. & Rego, Leandro Chaves

Great Expectations. Part I: On the Customizability of Generalized Expected Utility
by Francis C. Chu & Joseph Y. Halpern

Great expectations. Part II: Generalized expected utility as a universal decision rule
by Francis C. Chu & Joseph Y. Halpern

On Definability in Multimodal Logic I. Basic Notions
by Joseph Y. Halpern & Dov Sammet & Ella Segev

A Computer Scientist Looks at Game Theory
by Joseph Y. Halpern

Reasoning About Knowledge
by Ronald Fagin & Joseph Y. Halpern & Yoram Moses & Moshe Y. Vardi

A nonstandard characterization of sequential equilibrium, perfect equilibrium, and proper equilibrium
by Joseph Halpern

On Definability in Multimodal Logic II. Defining Knowledge in Terms of Belief
by Joseph Y. Halpern & Dov Samet & Ella Segev

Constructive Decision Theory
by Blume, Lawrence & Easley, David & Halpern, Joseph Y.

Reasoning about knowledge of unawareness
by Halpern, Joseph Y. & Rêgo, Leandro C.

Lexicographic probability, conditional probability, and nonstandard probability
by Halpern, Joseph Y.

Generalized solution concepts in games with possibly unaware players
by Leandro Rêgo & Joseph Halpern

Weighted Sets of Probabilities and MinimaxWeighted Expected Regret: New Approaches for Representing Uncertainty and Making Decisions
by Joseph Y. Halpern & Samantha Leung

Iterated regret minimization: A new solution concept
by Halpern, Joseph Y. & Pass, Rafael

Reasoning about knowledge of unawareness revisited
by Halpern, Joseph Y. & Rêgo, Leandro C.

Conservative belief and rationality
by Halpern, Joseph Y. & Pass, Rafael

Conditional belief types
by Di Tillio, Alfredo & Halpern, Joseph Y. & Samet, Dov

Algorithmic rationality: Game theory with costly computation
by Halpern, Joseph Y. & Pass, Rafael

Ambiguous language and common priors
by Halpern, Joseph Y. & Kets, Willemien

Weighted sets of probabilities and minimax weighted expected regret: a new approach for representing uncertainty and making decisions
by Joseph Halpern & Samantha Leung

Maxmin weighted expected utility: a simpler characterization
by Joseph Y. Halpern & Samantha Leung

Minimizing regret in dynamic decision problems
by Joseph Y. Halpern & Samantha Leung

Erratum to: A nonstandard characterization of sequential equilibrium, perfect equilibrium, and proper equilibrium
by Joseph Y. Halpern

Characterizing solution concepts in terms of common knowledge of rationality
by Joseph Y. Halpern & Yoram Moses

Reasoning about rationality
by Bjorndahl, A. & Halpern, J. Y. & Pass, R.

Game theory with translucent players
by Joseph Y. Halpern & Rafael Pass