نتایج جستجو برای: temporal constraints
تعداد نتایج: 421132 فیلتر نتایج به سال:
This paper proposes the Temporal Versioned Constraint Language (TVCL), which provides a declarative and non ambiguous way to user specification of constraints for temporal databases with versions support, based on the Temporal Versions Model (TVM). This language gives support to time and versions characteristics of data and of the constraints themselves, allowing the definition of constraints v...
A Generalized Temporal Role Based Access Control (GTRBAC) model that captures an exhaustive set of temporal constraint needs for access control has recently been proposed. GTRBAC’s language constructs allow one to specify various temporal constraints on role, userrole assignments and role-permission assignments. However, the presence of temporal constraints on role enablings and role activation...
Temporal landmarks have been proved to be a helpful mechanism to deal with temporal planning problems, specifically to improve planners performance and handle problems with deadline constraints. In this paper, we show the strength of using temporal landmarks to handle the state trajectory constraints of PDDL3.0. We analyze the formalism of TempLM, a temporal planner particularly aimed at solvin...
Previous research on temporal anchoring and ordering has focused on the annotation and learning of temporal relations between events. These qualitative relations can be usefully supplemented with information about metric constraints, specifically as to how long events last. This paper describes the first steps in acquiring metric temporal constraints for events. The work is carried out in the c...
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