The calculation process of this technology includes the following steps:
(1) Obtain and integrate metal market price information, past historical purchase records, and material comparison table data;
(2) Grouping the data according to materials;
(3) Combine each sub-data set with market price information;
(4) Judging whether there are more than 30 pieces of data in the group. If not, do nothing;
(5) Data cleaning. Delete the information that is useless in the ROM quotation process
(6) Model construction. According to each sub-data set, fit models, and perform training models.
(7) Measure the results of each model (mainly based on MAPE, R2, RMSE, and MAE as indicators to assist in judging the quality of the model during analysis)