Microsoft AI beats doctors in simulated diagnosis test

Ever leave a doctor's appointment with more questions than answers? Maybe you've gone through several tests, only to hear that your doctor still isn't sure what's causing your symptoms. That uncertainty can be exhausting, especially when you want answers. Now, Microsoft says its new artificial intelligence system could help doctors solve some of medicine's toughest diagnostic puzzles. And the early numbers are impressive.

In a study published on Oct. 22 in the journal Science, Microsoft's...