グーグルのスペルチェック

グーグルのスペルチェックはすべてコンピュータのパワーに頼っていて，自己学習する。しかしまだ文脈理解までには至っていない。

Google wrote its own spell checker, and maintains that nobody know as many spelling errors as it does. The amount of computing power available at the company means it can afford to begin teaching the system which words are related - for instance "Imperial", "College" and "London". It's a job that many CPU years, and which would not have been possible without these thousands of machines. "When you have tons of data and tons of computation you can make things work that don’t work on smaller systems," said Hölzle. One goal of the company now is to develop a better conceptual understanding of text, to get from the text string to a concept.

http://insight.zdnet.co.uk/hardware/servers/0,39020445,39175560-6,00.htm