We show how belief revision can be treated systematically in the format of dynamicepistemic logic, when operators conditional are added. The core engine consists definable update rules for changing plausibility relations between worlds, which have been proposed independently dynamic-epistemic literature on preference change. Our analysis yields two new types modal result. First, we obtain complete logics concrete mechanisms revision, based compositional reduction axioms. Next, various...

This report aims to identify the areas where NLP (natural language processing) is expected be successful, and suggest how people organisations can make use of opportunities it will create, as users, suppliers or investors.(p.4) Tim Johnson has written a very useful guide commercial side applications.It large, comprehensive that runs 459 double-spaced pages.Johnson graduate imperial College previously on Expert Systems (July 1984), so he familiar with work in other machine intelligence.This...

Statements not only update our current knowledge, but also have other dynamic effects. In particular, suggestions or commands 'upgrade' preferences by changing the order among worlds. We present a complete logic of knowledge plus preference upgrade that works with dynamic-epistemic-style reduction axioms. This system can model obligations, conflicting commands, 'regret'. then show how to derive axioms from arbitrary definable relation changes. style analysis has product version between...

The importance of the logical ‘generalized quantifiers’ (Mostowski [1957]) for semantics natural language was brought out clearly in Barwise & Cooper [1981]. Basically, idea is that a quantifier phrase QA (such as “all women”, “most children”, “no men”) refers to set sets individuals, viz. those B which (QA)B holds. Thus, e.g., given fixed model with universe E , where ⟦ A ⟧ individuals forming extension predicate “ ” model. This point view permits an elegant and uniform semantic...

The author discusses games of both perfect and imperfect information at two levels structural detail: players’ local actions, their global powers for determining outcomes the game. Matching logical languages are proposed both. In particular, ‘action level’, naturally model a combined ‘dynamic‐epistemic language’– correspondences found between special axioms in this language particular modes playing with dynamics. At ‘outcome paper presents suitable notions game equivalence, some simple...

Current dynamic-epistemic logics model different types of information change in multi-agent scenarios. We generalize these to a probabilistic setting, obtaining calculus for update with three natural slots: prior probability on states, occurrence probabilities the relevant process taking place, and observation events. To match this mechanism, we present complete dynamic logic character. The completeness proof follows compositional methodology that applies much larger class...