Electricity selling company credit evaluation device based on big data

The invention relates to an electricity selling company credit evaluation method based on big data. The the method comprises the steps of: building a credit evaluation index system, setting corresponding evaluation index weights w for indexes of the credit evaluation index system, and determining the evaluation index weights w by employing a fuzzy BWM method; based on the credit evaluation index system, establishing a classic domain matter element matrix and a node domain matter element matrix, wherein the classic domain matter element matrix grades the credit rating; establishing a correlation function based on the classic domain matter element matrix and the node domain matter element matrix; extracting all index data of a to-be-evaluated electricity selling company from an electricity trading platform by adopting a web crawler technology, and taking the all index data as current sample data; based on the correlation function, calculating a comprehensive correlation degree between the current sample data an