Abstract:

The cloud computing is an advanced computing concept and it is developed based on grid computing and distributed computing. XML active web service has following characteristics:data heterogeneity，data magnitude and service on demand which can be regarded as the application of the cloud computing with the ability of network computing. Facing the massive heterogeneous semi／non-structure data from the internet，the execution of the filter method is always the neck of the whole system. In view of this，this paper proposed hedge automata and its HXFA algorithm in order to improve the execution efficiency. Then，combining with the concept of the cloud computing，the algorithm is applied into the HXPS system and the system architecture and key techniques are presented in this paper.

Key words: massive web data, active service, cloud computing, schema