The invention relates to a model training
system based on a separation degree index. The model training
system comprises a model training unit, a model
pruning and compressing unit and an output unit.The model training unit comprises the following modules of: a, data cleaning module for original variable cleaning; b, a
feature selection module for screening candidate feature sets compressed by amodel; c, a model training module for model training and optimization. The model
pruning and compressing unit comprises the following modules of: d, a data sample grouping module for data sample grouping; e, a feature correlation discrimination module used for calculating correlation coefficients of features and target variables and grouping and sorting samples; f, a feature optimal
breakpoint selection module for selecting the optimal breakpoints of the features; g, a feature separation degree index calculation module which constructs feature separation degree indexes and outputs a feature with the best effect. The output unit comprises the following modules of: h, an optimal
feature selection module for optimal
feature selection; and i, an output module used for outputting a single-pointrule
list. According to the method, the established model can be trained under the condition that the data of one party is not transmitted out, so that the
data security and customer privacy of two parties are effectively protected.