On the Introduction of Time in Distributed Blackboard Rules

Abstract

In the realm of coordination languages, reactivity by means of blackboard rules has been used in order to increase the dynamic behavior of data-spaces by enriching them with programmable capabilities. In real-life scenarios time constraints come as a natural requirement. In this paper we introduce this temporal aspect in the definition of distributed blackboard rules in several ways in order to accommodate requirements which impose observing sets of events that occur at given time points as well as within given time frames. Moreover, this allows to define contexts as ordered sequences of events and to change their significance according to the amount of time in which they are satisfied. © Springer-Verlag Berlin Heidelberg 2013.