ENCODING METHOD, DECODING METHOD, BIT STREAM, ENCODER, DECODER, AND STORAGE MEDIUM

An encoding method, a decoding method, an encoder, a decoder, and a storage medium. The decoding method comprises: determining a preset parameter corresponding to an attribute quantization residual value; if the preset parameter meets a first preset condition, performing, on at least one piece of first-type syntax element identification information, decoding processing based on a context model, and performing, on at least one piece of second-type syntax element identification information, decoding processing based on a bypass model, so as to determine a value of the at least one piece of first-type syntax element identification information and a value of the at least one piece of second-type syntax element identification information; and determining the attribute quantization residual value according to the value of the at least one piece of first-type syntax element identification information and the value of the at least one piece of second-type syntax element identification information. In this way, a hard