SAN FRANCISCO (AP) — Online review aggregator Yelp wants to harness artificial intelligence to make it easier for users to find information curated by other people. Although Yelp’s users have always been able to dive into its reservoir of 330 million local business reviews , they sometimes find themselves drowning in a sea of commentary from other people about restaurants, doctors, plumbers, roofers and a smorgasbord of other merchants — a problem the new chatbot assistant is designed to solve.