Bidding collusion behavior recognition and analysis method based on big data

The invention discloses a bidding collusion behavior recognition and analysis method based on big data. The method comprises the following steps: establishing an analysis model for recognizing a bidding collusion behavior by virtue of the big data technology, namely a community detection model based on a complex network; constructing a community relationship network participating in bidding subjects, wherein the network can dynamically feed back and modify the weight according to the enterprise behavior and the integrity relationship; using a community detection algorithm to discover a potential community relationship, and then judging whether a bidding collusion behavior exists between the bid inviting and tendering subjects or not; in particular, the model is applied to a complex networkfor searching enterprise bidding behaviors, a rule hidden behind transaction data is revealed through a data experiment result, a transaction track and behavior characteristics of bidding collusion are depicted, and an inter