Responsibility and blame: a structural-model approach

  • Authors:
  • Hana Chockler;Joseph Y. Halpern

  • Affiliations:
  • School of Engineering and Computer Science, Hebrew University, Jerusalem, Israel;Department of Computer Science, Cornell University, Ithaca, NY

  • Venue:
  • IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
  • Year:
  • 2003

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Abstract

Causality is typically treated an all-or-nothing concept; either A is a cause of B or it is not. We extend the definition of causality introduced by Halpern and Pearl 2001a to take into account the degree of responsibility of A for B. For example, if someone wins an election 11-0, then each person who votes for him is less responsible for the victory than if he had won 6-5. We then define a notion of degree of blame, which takes into account an agent's epistemic state. Roughly speaking, the degree of blame of A for D is the expected degree of responsibility of A for B, taken over the epistemic state of an agent.