Stephen Wolfram Q&ASubmit a question
Some collected questions and answers by Stephen Wolfram
Questions may be edited for brevity; see links for full questions.
August 31, 2009
From: Interview by Kaustubh Katdare, CrazyEngineers
Where does Wolfram|Alpha get all its data? Does it crawl the Internet like web search engines?
We try to get data from the most definitive, authoritative, sources. Often the web is a good place to start in helping us identify those sources. But then we tend to go to them directly. Identifying the best sources is just the first step, though. Then we have to curate the data, organizing it, correlating it, validating it. It always ends up needing lots of automated work, with statistical analysis, visualization, etc. Together with input from actual human experts in each particular domain.