The bot was created by Microsoft's Technology and Research and Bing divisions,[3] and named "Tay" after the acronym "thinking about you".[4] Although Microsoft initially released few details about the bot, sources mentioned that it was similar to or based on Xiaoice, a similar Microsoft project in China.[5] Ars Technica reported that, since late 2014 Xiaoice had had "more than 40 million conversations apparently without major incident".[6] Tay was designed to mimic the language patterns of a 19-year-old American girl, and to learn from interacting with human users of Twitter.[7]