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Return to Regular Papers This paper presents a semantic analysis of dynamic temporal reasoning in ordinary English with aspectual adverbs, which create an intrinsic opposition between the actual value of a given temporal parameter and its expected alternatives. The dynamic perspective determines which information is updated and which remains constant across updates. Expected alternatives and dynamic updates of the given context rely on modelling basic aspectual information and static temporal reasoning. A logical calculus is proposed to model valid dynamic temporal reasoning in changing contexts. ![]() DiSC'02 © 2003 Association for Computing Machinery |