SILICON VALLEY - Amazon has hired a top eBay artificial intelligence executive to be its AI director at its A9 labs in Palo Alto. Hassan Sawaf had held a number of positions at eBay (NASDAQ:EBAY) over the past three years, most recently listing his job there on his LinkedIn page as "head of artificial intelligence." He also set up its cognitive computing group, helping shoppers searching in foreign languages find items listed in English. He holds a patent for hybrid machine translation - using...