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Wednesday, April 30, 2008


Quantifying open software using Google Code Search

Google Code Search lets you search for source code files by licence type, so of course I was interested in whether this could be used for quantifying indexable source code on the web. And luckily GCS lets you search for all works with a given licence. (If you don't understand why that's a big deal, try doing a search for all Creative Commons licensed work using Google Search.) Even better, using the regex facility you can search for all works! You sure as heck can't do that with a regular Google web search.

Okay, so here's the latest results, including hyperlinks to searches for you to try them yourself:

And here's a spreadsheet with graph included: However, note the discontinuity (in absolute and trend terms) between approximate and specific results in that (logarithmic) graph, which suggests Google's approximations are not very good.

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