The Archives Unleashed Cloud
Imagine a world where you could access and analyze a web archives file in as few as three clicks, with no coding necessary. Oh wait, there’s a portal for that: the Archives Unleashed Cloud.
The Archives Unleashed Cloud is an open source cloud-based analysis tool that helps researchers and scholars conduct web archive analysis. It supports the priorities of accessibility and usability of web archives by providing users a web-based front end to access the Archives Unleashed Toolkit. It has been primarily developed by our project co-investigator and developer, Nick Ruest.
You can use the Cloud (for free) at http://cloud.archivesunleashed.org
The Cloud has a clean and easy-to-use modern interface. The best part is that you do not need to know how to code, which in turn supports the increased accessibility of working with web archives.
Core features of the Archives Unleashed Cloud include:
- Syncing Archive-It collections;
- Ingesting Archive-It collections via WASAPI to the Cloud;
- Creating a network graph, domain distribution list, full text, and full text by domain derivatives, and making each available for download;
- Providing in-browser diagrams to highlight a collection’s crawl frequency, interactive network graph (to see major nodes and connections within your collection), and domains graph.
In addition, our documentation offers guidance on how to get the Cloud up and running, as well as how to use some of its features.
A Guided Tour of the Archives Unleashed Cloud
Let’s take a tour of how the Cloud works. Below you will find a video tour of the Archives Unleashed Cloud, followed by a brief overview of what you can expect when working with the platform.
Once a user signs up to cloud.archivesunleashed.org, they enter their Archive-It credentials, which are salted and encrypted. Those credentials are then used to sync their Archive-It collections with the Cloud using Archive-It’s WASAPI endpoint. This is done as a background job, and once it is complete, it emails the user to let them know that their Archive-It collections are synced and available for further analysis.
The main collections screen provides some basic information about each collection: title, if the collection has been analyzed in the Cloud yet, if it is publicly available (in Archive-It), the number of ARC/WARCs in the collection, and the size of the collection. You can see this below!
From the main collections screen, users can select a specific collection to download, which will trigger a number of background jobs. The first job uses data gathered from the WASAPI endpoint to download and verify each ARC/WARC file to our Archives Unleashed Cloud instance. Once the entire collection is downloaded, an automatic email is generated to notify the user that the collection has been downloaded, and analysis will begin.
The analysis process then triggers an Apache Spark job and uses AUT to create a basic set of derivatives:
- A GEXF file which you can load with Gephi. It has a basic layout courtesy of our GraphPass program, which allows you to see major nodes and communities in the network;
- A GraphML file which you can load with Gephi. It does not have any basic layouts or transformations, requiring you to do so manually. You can use GraphPass to provide layout if you wish to add that feature to your file;
- A CSV file that explains the distribution of domains within the web archive;
- A CSV file that contains the text extracted from HTML documents within the web archive. You can find the crawl date, full URL, and the plain text of each page within the file;
- A ZIP file that contains the plain text extracted from HTML documents within the web archive, arranged by each domain. Within this ZIP you will have a series of text files, each containing the full text of a top-ten domain.
If you are curious about what you can do with these files, see the Archives Unleashed Cloud Derivative Files learning guides.
Here is a completed collection page:
GraphPass produces visualization-related data in the network files such as color, position and size based on common social network algorithms. In the networks each node (dot) represents a domain (i.e. all of the URLs within a domain such as “yorku.ca” or “newyorktimes.com”) and each edge (line) represents a link from one node to another.
Users can explore and interact with the network using the helper buttons in the top left corner of the network window.
- Full Screen - opens up the network to full screen for easier interaction
- Zoom in/out - zooms the camera into the network and away from it
- Refresh - brings the network diagram back to its original state
- Scale up and scale down - allows users to see more or less node labels in the network
A few cautionary notes on “scale up” and “scale down” are in order. With website networks, some sites have so many links compared to the others, that they obscure everything else. The Archives Unleashed Cloud’s scale-up feature uses logarithmic transformation to make the graph a bit easier to read. For example, six nodes with size values 1, 10, 100, 1000, 10000 and 1,000,000,000 can be transformed using a base 10 logarithm to produce new sizes 0, 1, 2, 3, 4, & 9, making the node sizes much closer together in size.
A logarithm is a mathematical expression used to deal with non-normal distributed data (like networks). It is created by giving a base number an exponent, which is then multiplied by itself, to create factor increments, rather than equal amount increments, between data points. This is important as it will allow for data points to be more evenly distributed with minimal influence on data accuracy and integrity.
You can further interact with the hyperlink diagram by hovering over any node to highlight its immediate connections to other nodes. The arrow on each line indicates the direction of connection, for instance, in the image below, we see an arrow connecting two nodes and reveals that
townyarmouth.ca has a link to the
Can I try it out?
Currently, anyone with an Archive-It subscription can take the Cloud for a spin. Please just come over to http://cloud.archivesunleashed.org and give it a try.
The Archives Unleashed Cloud is an open source project, you can view the codebase here. Although it is tied closely to the canonical instance running at http://cloud.archivesunleashed.org, it can also be run as a standalone project on your own server, desktop, or laptop! That said, our primary focus is on the canonical instance that we are hosting. However, if there is interest in generalizing aspects of the project, let us know and we can collaborate and figure out how to make it happen.