Method for data processing in neural network system and neural network system

A neural network system, comprising:

• a memory storing computer program instructions;
• and
• at least one processor configured to execute the computer program instructions to cause the neural network system to:
• input training data into the neural network system to obtain first output data, wherein the neural network system comprises a plurality of neural network arrays, each neural network array of the plurality of neural network arrays comprises a plurality of in-memory computing units, and each in-memory computing unit of the plurality of in-memory computing units is configured to store a weight value of a neuron in a corresponding neural network array;
• calculate a deviation between the first output data and target output data;
• and
• adjust, based on the deviation, a weight value stored in at least one in-memory computing unit in at least one neural network array in the plurality of neural network arrays, wherein the at least one neural network array is configured to implement computing of at least a portion of one neural network layer in the neural network system.

A chip, comprising:

• a data interface;
• and
• a processor that reads, by using the data interface, instructions stored in a memory, to perform a method comprising:
• inputting training data into a neural network system to obtain first output data, wherein the neural network system comprises a plurality of neural network arrays, each neural network array of the plurality of neural network arrays comprises a plurality of in-memory computing units, and each in-memory computing unit of the plurality of in-memory computing units is configured to store a weight value of a neuron in a corresponding neural network array;
• calculating a deviation between the first output data and target output data;
• and
• adjusting, based on the deviation, a weight value stored in at least one in-memory computing unit in at least one neural network array in the plurality of neural network arrays, wherein the at least one neural network array is configured to implement computing of at least a portion of one neural network layer in the neural network system.