A Comprehensive Trust Model Based on Social Relationship and Transaction Attributes

Table 1

Symbols used in the study.

Symbol	Notions	Illustration
	Cumulative trading coefficient	Symbol for determining is a new user or has made many transactions before
	Number of transactions	The number of transactions performed by user until time
	Impact factor of transaction price	The impact of transaction price at time on the transaction attribute trust
	Transaction price	The price of transaction performed by user until time
	Impact factor of transaction quantity	The impact of transaction quantity at time on the transaction attribute trust
	Transaction quantity	The quantity of products or services purchased by user until time
	Maximum quantity	The maximum quantity of products or services purchased by user during.
	Fraud penalty factor	Factor to prevent fraud behaviour
	Damping function	Make changes in trust values smooth
	Transaction attribute trust	Transaction trust of five factors of user until time
	Prestige degree	The reputation or popularity that user has
	Familiarity between users	Closeness between users
	Rating similarity	Similarity of ratings of the same item or user by different users
	Social relationship trust	Social relationship trust of three factors of user
	Comprehensive trust	Comprehensive trust of transaction attribute and social relationship attribute user