Service Recommendation with High Accuracy and Diversity

Table 1

Symbols and their meanings.

Symbol	Meaning
	Web service i used in a user’s history
	Candidate web service j
	The WSDL documentation of web service i
	The number of web services used in a user’s history
	The number of candidate web services
	A user’s rating of web service i used in history
	Degree of a user’s preference for module j
,	Threshold setting
	The -th word in the corpus
ω	The weight vector of web service
	The similarity level of web service i and web service j
	The predicted ranking score of candidate web service j