Machine learning device, cleaning prediction device, and cleaning system

A machine learning apparatus comprising:

• a memory configured to store a program;
• and
• a processor configured to execute the program and control the machine learning apparatus to:
• acquire input data, the input data including arbitrary machining conditions for an arbitrary machine tool to machine arbitrary workpieces, washing conditions for an arbitrary washing device to wash an inside of a machine tool where the arbitrary workpieces have been machined under the arbitrary machining conditions, and state information indicating a degree of soil inside the machine tool before machining under the arbitrary machining conditions;
• acquire, as label data, state information about the inside of the machine tool after performing machining under the arbitrary machining conditions included in the input data and subsequent washing under the washing conditions included in the input data;
• and
• execute supervised learning using the acquired input data and the acquired label data, and generate a trained model.