Quantitative index construction method, device and equipment based on knowledge distillation

The invention provides a quantitative index construction method, device and equipment based on knowledge distillation, which can be applied to the technical fields of artificial intelligence, computers and data mining. The method comprises the steps of inputting a target query vector into a target low-dimensional index model so as to execute the following operations: based on an initial quantization codebook, respectively quantizing the target query vector and outputting a quantized query vector, the initial quantization codebook is pre-stored in a query database, and the quantized query vector is stored in the target low-dimensional index model; the target low-dimensional index model is obtained based on training of a high-dimensional index model and a target loss function, the target loss function comprises a knowledge distillation loss function, and the quantitative query vector is used for representing compression representation of a target query vector; updating the initial quantized codebook according t