Monitoring data processing method, trend prediction method and system

The invention discloses a monitoring data processing method and a trend prediction method and system. The system comprises an acquisition module, a prediction module, a determination module and a processing module. Firstly, an acquisition module preprocesses acquired monitoring data, and then a prediction module adopts a trained GRU model to predict the change trend of a monitored object. Afterwards, the determination module determines whether the change trend is abnormal, and when the change trend is abnormal, the determination module determines nonlinear jump data in the monitoring data through the self-attention mechanism network. Then, the processing module judges whether the jump data belong to noisy point data or not, and if yes, the processing module replaces the jump data with an interpolation method; and finally, trend prediction is carried out again through a prediction module according to the monitoring data processed by the processing module. Therefore, the trend prediction precision of the monito