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Answers to Recent Community Questions

Answers to Recent Community Questions

In this post we respond to the most common questions. Thanks for all the support and please keep the questions coming!
Common Crawl Enters A New Phase

Common Crawl Enters A New Phase

A little under four years ago, Gil Elbaz formed the Common Crawl Foundation. He was driven by a desire to ensure a truly open web. He knew that decreasing storage and bandwidth costs, along with the increasing ease of crunching big data, made building and maintaining an open repository of web crawl data feasible.
Video: Gil Elbaz at Web 2.0 Summit 2011

Video: Gil Elbaz at Web 2.0 Summit 2011

Hear Common Crawl founder discuss how data accessibility is crucial to increasing rates of innovation as well as give ideas on how to facilitate increased access to data.

Common Crawl Blog

The Promise of Open Government Data & Where We Go Next

January 29, 2015

One of the biggest boons for the Open Data movement in recent years has been the enthusiastic support from all levels of government for releasing more, and higher quality, datasets to the public. In May 2013, the White House released its Open Data Policy and announced the launch of Project Open Data, a repository of tools and information--which anyone is free to contribute to--that help government agencies release data that is “available, discoverable, and usable.”

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December 2014 Crawl Archive Available

January 9, 2015

The crawl archive for December 2014 is now available! This crawl archive is over 160TB in size and contains 2.08 billion webpages.

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November 2014 Crawl Archive Available

December 24, 2014

The crawl archive for November 2014 is now available! This crawl archive is over 135TB in size and contains 1.95 billion webpages.

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Please Donate To Common Crawl!

December 10, 2014

Big data has the potential to change the world. The talent exists and the tools are already there. What’s lacking is access to data. Imagine the questions we could answer and the problems we could solve if talented, creative technologists could freely access more big data.

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October 2014 Crawl Archive Available

November 20, 2014

The crawl archive for October 2014 is now available! This crawl archive is over 254TB in size and contains 3.72 billion webpages.

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September 2014 Crawl Archive Available

November 12, 2014

The crawl archive for September 2014 is now available! This crawl archive is over 220TB in size and contains 2.98 billion webpages.

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August 2014 Crawl Data Available

September 22, 2014

The August crawl of 2014 is now available! The new dataset is over 200TB in size containing approximately 2.8 billion webpages.

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Web Data Commons Extraction Framework for the Distributed Processing of CC Data

August 29, 2014

This is a guest blog post by Robert Meusel, a researcher at the University of Mannheim in the Data and Web Science Research Group and a key member of the Web Data Commons project. The post below describes a new tool produced by Web Data Commons for extracting data from the Common Crawl data.

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July 2014 Crawl Data Available

August 7, 2014

The July crawl of 2014 is now available! The new dataset is over 266TB in size containing approximately 3.6 billion webpages.

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April 2014 Crawl Data Available

July 16, 2014

The April crawl of 2014 is now available! The new dataset is over 183TB in size containing approximately 2.6 billion webpages.

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Navigating the WARC file format

April 2, 2014

Wait, what's WAT, WET and WARC? Recently CommonCrawl has switched to the Web ARChive (WARC) format. The WARC format allows for more efficient storage and processing of CommonCrawl's free multi-billion page web archives, which can be hundreds of terabytes in size.

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March 2014 Crawl Data Now Available

March 26, 2014

The March crawl of 2014 is now available! The new dataset contains approximately 2.8 billion webpages and is about 223TB in size.

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Common Crawl's Move to Nutch

February 20, 2014

Last year we transitioned from our custom crawler to the Apache Nutch crawler to run our 2013 crawls as part of our migration from our old data center to the cloud. Our old crawler was highly tuned to our data center environment where every machine was identical with large amounts of memory, hard drives and fast networking.

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Lexalytics Text Analysis Work with Common Crawl Data

February 4, 2014

This is a guest blog post by Oskar Singer, a Software Developer and Computer Science student at University of Massachusetts Amherst. He recently did some very interesting text analytics work during his internship at Lexalytics. The post below describes the work, how Common Crawl data was used, and includes a link to code.

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Winter 2013 Crawl Data Now Available

January 8, 2014

The second crawl of 2013 is now available! In late November, we published the data from the first crawl of 2013. The new dataset was collected at the end of 2013, contains approximately 2.3 billion webpages and is 148TB in size.

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New Crawl Data Available!

November 27, 2013

We are very please to announce that new crawl data is now available! The data was collected in 2013, contains approximately 2 billion web pages and is 102TB in size (uncompressed).

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Hyperlink Graph from Web Data Commons

November 13, 2013

The talented team at Web Data Commons recently extracted and analyzed the hyperlink graph within the Common Crawl 2012 corpus. Altogether, they found 128 billion hyperlinks connecting 3.5 billion pages.

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Startup Profile: SwiftKey’s Head Data Scientist on the Value of Common Crawl’s Open Data

August 14, 2013

Sebastian Spiegler is the head of the data team and SwiftKey and a volunteer at Common Crawl. Yesterday we posted Sebastian’s statistical analysis of the 2012 Common Crawl corpus. Today we are following it up with a great video featuring Sebastian talking about why crawl data is valuable, his research, and why open data is important.

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A Look Inside Our 210TB 2012 Web Corpus

August 13, 2013

Want to know more detail about what data is in the 2012 Common Crawl corpus without running a job? Now you can thanks to Sebastian Spiegler!

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Professor Jim Hendler Joins the Common Crawl Advisory Board!

March 22, 2013

We are extremely happy to announce that Professor Jim Hendler has joined the Common Crawl Advisory Board.  Professor Hendler is the Head of the Computer Science Department at Rensselaer Polytechnic Institute (RPI) and also serves as the Professor of Computer and Cognitive Science at RPI’s Tetherless World Constellation.

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URL Search Tool!

March 5, 2013

A couple months ago we announced the creation of the Common Crawl URL Index and followed it up with a guest post by Jason Ronallo describing how he had used the URL Index. Today we are happy to announce a tool that makes it even easier for you to take advantage of the URL Index!

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The Winners of The Norvig Web Data Science Award

February 25, 2013

We are very excited to announce that the winners of the Norvig Web Data Science Award Lesley Wevers, Oliver Jundt, and Wanno Drijfhout from the University of Twente!

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Analysis of the NCSU Library URLs in the Common Crawl Index

January 16, 2013

Last week we announced the Common Crawl URL Index. The index has already proven useful to many people and we would like to share an interesting use of the index that was very well described in a great blog post by Jason Ronallo.

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Common Crawl URL Index

January 8, 2013

We are thrilled to announce that Common Crawl now has a URL index! Scott Robertson, founder of triv.io graciously donated his time and skills to creating this valuable tool.

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blekko donates search data to Common Crawl

December 17, 2012

We are very excited to announce that blekko is donating search data to Common Crawl! Founded in 2007, blekko has created a new type of search experience that enlists human editors in its efforts to eliminate spam and personalize search.

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