This repo contains human curation data from blekko's slashtag filter system, which is used to drive the categories in the results on the blekko.com search engine and izik tablet and phone search apps.

Our hope is that researchers find this data as useful as the Open Directory Project (dmoz) web directory dataset once was. The founders of blekko were the founders of NewHoo, the startup which began the Open Directory Project.

For more details, please see:

• http://help.blekko.com/index.php/what-is-a-slashtag/
• http://blog.blekko.com/2013/01/14/cracking-the-search-category-problem/

We generate the categories in blekko and izik's search results based on this human curation data, augmented by machine-learning, and then applied to the data in the web graph in our web crawl.

We believe that the data in this repo is not copyrightable. As far as blekko so concerned, you can use it in any way you wish.

You can follow us on Twitter at @blekko or @iziksearch, or send us email at [email protected]

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Format of slastags.json

This tag contains the slashtag hierarchy. Each slashtag contains 0 or more urls and slashtags. The slashtags form a DAG.

URLs come in 3 forms:

• Complete websites. Example: http://www.gamblersanonymous.org/
• Paths within a website. Example: http://espn.go.com/nfl/
• Wildcarded paths. Example: http://www.oscon.com/*perl