Photo/IllutrationPolice officers try to restrain a sword-wielding perpetrator during training in Yokohama in December. (Asahi Shimbun file photo)

A groundbreaking system capable of predicting when and where crimes and accidents are likely to occur based on data learned by artificial intelligence is to be developed by Kanagawa prefectural police.

The system, the first of its kind in the nation, is expected to be trialed in 2020, the year of the Tokyo Olympics and Paralympics.

The AI-based system will be built on data of when and where approximately 1 million crimes and 800,000 accidents occurred in the past.

The system is also expected to incorporate records of the sex and age of people involved in the crimes and accidents, how such crimes were committed and details of the accidents, as well as information on weather, features of the terrain and buildings at that time.

Officers in the prefecture have been using another system that shows areas and periods of the time of the day crimes and accidents took place to help their patrolling duties.

The prefectural police plan to cover locations and times predicted by the AI-based system when it is made available.