VMD-based bidirectional long short-term memory network water quality prediction method and device

The invention relates to the technical field of water quality prediction, and discloses a bidirectional long short-term memory network water quality prediction method based on VMD. Collecting historical water quality data, and constructing a water quality data set based on the historical water quality data; performing data preprocessing on the water quality data set to generate preprocessed water quality data; setting VDM decomposition parameters, using a VDM algorithm to decompose the preprocessed water quality data to generate a group of IMF data, and arranging each IMF data from high frequency to low frequency according to the frequency; carrying out screening and fusion on the arranged IMF data; establishing a bidirectional LSTM network structure, and constructing an LSTM water quality prediction model by using IMF data; predicting future water quality through the LSTM water quality prediction model; the method has the advantages of high algorithm precision and improvement of the accuracy of the water qua