Google’s impressive speech recognition is one of the best examples of big data’s practical application. Farhad Manjoo explains:
How does Android’s speech system work so well? The magic of data. Speech recognition is one of a handful of Google’s artificial intelligence programs—the others are language translation and image search—that get their power by analyzing impossibly huge troves of information. For the speech system, the data are a large number of voice recordings. If you’ve used Android’s speech recognition system, Google Voice’s e-mail transcription service, Goog411 (a now-defunct information service), or some other Google speech-related service, there’s a good chance that the company has your voice somewhere on its servers. And it’s only because Google has your voice—and millions of others—that it can recognize mine.