Powerset 是一家位于加州圣弗朗西斯科的公司，正在开发互联网上的自然语言搜索引擎。

Powerset致力于构建一个能回答用户问题的自然语言搜索引擎(区别于基于关键字的搜索)。举个例子，当用户输入一个问题，"Which United Statesstate has the highest income tax?"，通常搜索引擎会忽略掉疑问词，进而使用关键字 "state"、 "highest"、"income"和"tax"来搜索。Powerset与之不同，它试图通过自然语言处理来理解问题的本质，并返回含有答案的网页。

Powerset is an American company based in San Francisco, California, that, in 2006, was developing a natural language search engine for the Internet. It became a wholly owned by American software and computing giant Microsoft.

Powerset was working on building a natural language search engine that could find targeted answers to user questions (as opposed to keyword based search). For example, when confronted with a question like "Which U.S. state has the highest income tax?", conventional search engines ignore the question phrasing and instead do a search on the keywords "state", "highest", "income", and "tax". Powerset on the other hand, attempts to use natural language processing to understand the nature of the question and return pages containing the answer.