Data encoding method and device, data decoding method and device, computer equipment and storage medium

The invention relates to a data encoding method and device, a data decoding method and device, computer equipment and a storage medium. The data coding method comprises the following steps: acquiring auxiliary coding information of feature data, and determining deviation degree representation information corresponding to each feature element included in the feature data according to the auxiliary coding information; quantizing each piece of deviation degree characterization information, and screening out a part of deviation degree quantized values from each piece of deviation degree quantized value obtained by the quantization processing according to a preset screening condition; screening feature elements corresponding to the deviation degree quantized values obtained by screening from a plurality of feature elements included in the feature data; for each feature element obtained through screening, entropy coding is carried out on the targeted feature element based on the deviation degree quantized value cor