Modern scientific research is generating daunting amount of data that is commonly required to be combined together to service daily research endeavors. This paper introduces an ontology-based approach to publishing and composing data-intensive web service. The approach distinguishes itself by its capability of dynamically evolving service interface and a query rewriting-based planner for service composition, enabled by richly describing service capability using the semantic web languages. The advantage of the proposed approach is that the data service can adapt itself with client request dynamically, greatly improving its query service capability. The evaluation reveals the approach scale well as service number goes large.
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