Cloud Manufacturing Service Discovery and Matching Based on Keyword Synonymous Extension

Aiming at the problem that the discovery process of cloud manufacturing service is too small and the accuracy of matching process is not enough, the paper establishes a service discovery and matching model based on keyword synonym expansion. The model performs word segmentation normalization processing on user demand information to obtain the demand keyword set, and then synonymously expands the keyword based on the synonym dictionary based on cloud manufacturing platform resource information, and uses the word frequency-anti-document frequency method to filter the word set. Aiming at the risk of malicious or untrue evaluation of QoS evaluation information about the matching process, the evaluation credibility function is introduced to ensure the reliability of QoS information. Finally, the effectiveness and feasibility of the method are verified by a case.