This paper presents efficient mechanisms for activation, execution and rating that are suitable for use in BB1-style blackboard architectures. We describe a knowledge source compiler that produces match networks and demons for efficient activation and rating while compiling the entire system for increased execution speed. Experiments using the enhancements in a general-purpose blackboard shell ...

In this paper, we propose a Blackboard Architecture as a means for coordinating hybrid reasoning over the Semantic Web. We describe the components of traditional blackboard systems (Knowledge Sources, Blackboard, Controller) and then explain how we have enhanced these by incorporating some of the principles of the Semantic Web to produce our Semantic Web Blackboard. Much of the framework is alr...

This paper investigates the effects of paral-lelism on blackboard system scheduling. A parallel blackboard system is described that allows multiple knowledge source instantiations to execute in parallel using a shared-memory blackboard approach. New classes of control knowledge are defined that use information about the relationships between system goals to schedule tasks — this control knowled...

With the advantages of using learning management systems (LMS) such as Blackboard in the educational process, assessing the impact of such systems has become increasingly important. This study measures the impact of the Blackboard system on students at Saudi Electronic University (SEU) in order to help improve the quality of existing learning environment. For this assessment and measurement, th...

The reaction times of 80 5s in judging sentences true or false with respect to pictures were analyzed, and it was noted (a) that true sentences containing an expected surface structure required less time than false sentences of the same structure, (b) that latencies to true sentences containing an unexpected SJlrfacestructure were longer than latencies to the same sentences when their .structur...

We advance a theory of inductive reasoning based on similarity, and test it on arguments involving mammal categories. To measure similarity, we quantified the overlap of neural activation in left Brodmann area 19 and the left ventral temporal cortex in response to pictures of different categories; the choice of of these regions is motivated by previous literature. The theory was tested against ...

In this work we report a software platform for synchronous distance learning, which makes the presence of teachers in the student’s house possible, deploying the same class, in the same time, with the same mates, through the internet. Thus the working scenery is a normal student room, in which some students are present and some others are virtual students with interactive presence that allows t...