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A novel software engineering methodology of today's internet era for developing distributed application is Service-oriented Architecture (SOA). Service providers from different organizations develop their own web services independently and the service consumers can put these services together to develop their applications. Normally, service providers don't want to unveil their background business logic to other organizations. For the purpose of protecting business secret and privacy, background processes are often hidden by their service providers and consumer can only get limited public views. Service consumers communicate with public views using message. This paper improves the rename algorithm and the constructing atomicity-equivalent public view algorithm of an existing process algebra model in, hoping to lowering time complexity.