KEYWORDS: Web services, Logic, Evolutionary algorithms, Composites, Silicon, Artificial intelligence, Chemical species, System on a chip, Electronics engineering, Distributed computing
For automatic service composition, a planning based framework MOCIS is proposed. Planning is based on two major
techniques, service reasoning and constraint satisfaction. Constraint satisfaction can be divided into quality constraint
satisfaction and quantity constraint satisfaction. Contrary to traditional methods realizing upon techniques by interleaving
activity, message and provider, the novelty of the framework is dividing these concerns into three layers, with activity
layer majoring service reasoning, message layer for quality constraint and provider layer for quantity constraint. The
layered architecture makes automatic web service composition possible for activity tree that abstract BPEL list and
concrete BPEL list are achieved automatically with each layer, and users can selection proper abstract BPEL or BPEL to
satisfy their request. And E-traveling composition cases have been tested, demonstrating that complex service can be
achieved through three layers compositing automatically.
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