These databases have articles and conference abstracts about Computer Science in them. The articles they contain are very recent (which is good for researching AI), but they're focused on computer programming, rather than AI applications. To get the best results, try these databases when you already have a specific topic in mind, and be aware that your keywords may have to be very specific. For example, searching for "diagnosis" will mostly bring up articles about diagnosing problems with software. "Medical diagnosis" will bring up articles about AI diagnosing disease.