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February 10, 2020

Host- and Domain-Level Web Graphs Nov/Dec/Jan 2019 – 2020

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of November, December 2019 and January 2020. Additional information about the data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases.
Sebastian Nagel
Sebastian Nagel
Sebastian is a Distinguished Engineer with Common Crawl.

We are pleased to announce a new release of host-level and domain-level web graphs based on the crawls of November, December 2019 and January 2020. Additional information about the data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases (e.g., Nov/Dec/Jan 2017-2018 Webgraphs). You may also visit the projects cc-webgraph and cc-pyspark which host all scripts and tools required to construct the graphs.

Host-level graph

The graph consists of 1.24 billion nodes and 4.54 billion edges and includes dangling nodes i.e. hosts that have not been crawled yet are pointed to from a link on a crawled page. There are 1.17 billion dangling nodes (95%) and the largest strongly connected component contains 45 million (3.6%) nodes.

You can download the graph and the ranks of all 1.24 billion hosts from AWS S3 on the path s3://commoncrawl/projects/hyperlinkgraph/cc-main-2019-20-nov-dec-jan/host/. Alternatively, you can use https://data.commoncrawl.org/projects/hyperlinkgraph/cc-main-2019-20-nov-dec-jan/host/ as prefix to access the files from everywhere.

Download files of the Common Crawl Nov/Dec/Jan 2019-20 host-level Webgraph

Size File Description
7.23 GB cc-main-2019-20-nov-dec-jan-host-vertices.paths.gz nodes ⟨id, rev host⟩, paths of 12 vertices files
20.16 GB cc-main-2019-20-nov-dec-jan-host-edges.paths.gz edges ⟨from_id, to_id⟩, paths of 24 edges files
8.42 GB cc-main-2019-20-nov-dec-jan-host.graph graph in BVGraph format
2 kB cc-main-2019-20-nov-dec-jan-host.properties
10.80 GB cc-main-2019-20-nov-dec-jan-host-t.graph transpose of the graph (outlinks inverted to inlinks)
2 kB cc-main-2019-20-nov-dec-jan-host-t.properties
1 kB cc-main-2019-20-nov-dec-jan-host.stats WebGraph statistics
16.32 GB cc-main-2019-20-nov-dec-jan-host-ranks.txt.gz harmonic centrality and pagerank

Note that the host names are reversed and a leading www. is stripped: www.subdomain.example.com becomes com.example.subdomain.

Domain-level graph

The domain graph was built by aggregating the host graph on the level of pay-level domains (PLDs) based on the public suffix list maintained on publicsuffix.org.

The domain-level graph has 85.8 million nodes and 1.9 billion edges. 51% or 44 million nodes are dangling nodes, the largest strongly connected component covers 34 million or 39% of the nodes.

All files related to the domain graph are available on AWS S3 under s3://commoncrawl/projects/hyperlinkgraph/cc-main-2019-20-nov-dec-jan/domain/ resp. https://data.commoncrawl.org/projects/hyperlinkgraph/cc-main-2019-20-nov-dec-jan/domain/.

Download files of the Common Crawl Nov/Dec/Jan 2019-20 domain-level Webgraph

Credits

Thanks to the authors of the WebGraph framework, whose software made the computation of graph properties and ranks possible. We hope the data will be useful for you to do any kind of research on ranking, graph analysis, link spam detection, etc. Let us know about your results via Common Crawl's Google Group!

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