The list of areas in which the machines are beating humans can now be expanded to include predicting the Bank of Japan's next moves.

As analysts search for portents as to whether the BOJ will follow the European Central Bank in pursuing still more monetary stimulus, those at Credit Suisse Group AG and Nomura Securities Co. are turning to the oracle of artificial intelligence for assistance.

Both banks introduced computer algorithms at the end of last year to analyze the mountains of text produced by the central bank in the hope of gleaning insights into the direction of its policy.