• Why am I seeing “unknown date” instead of a publication date?

    This article explains how Overton handles errors in publication dates. By default Overton collects the publication date of each policy document either from its source website or the PDF of the policy document itself. Occasionally this doesn’t work and we’re unable to determine what the correct publication date is. This…

  • Making your publications more visible

    Following best practice will help researchers, tools and the public find your publications To make sure your publications are properly indexed by Overton and other search indexes like Google Scholar it is important to follow web publishing best practice wherever possible. Ensure publication pages show dates, titles and download links…

  • Which publications does Overton collect?

    Discover Overton’s criteria for collecting documents from an indexed source Overton has a broad definition of a policy document: “documents written primarily for or by policymakers” … and collects from a wide range of different sources. But we don’t collect everything from these sources: we manually curate each one and…

  • Using the Overton API

    A quickstart guide to Overton’s JSON API (Note: for large projects or where you need to get at a lot of data quickly the data snapshots may be a better option.) The data in Overton is available in a machine readable format using our REST API, which sits in-between our…

  • Document vs PDF metadata in the API

    How “PDF” and “Policy document” objects in the snapshots and APIs are related and what metadata is shared between them In the Overton web interface every Policy document object is made up of one or more PDF objects. How Overton parses publication landing pages Imagine a publication landing page representing…

  • Overton data snapshots

    A description of Overton’s bulk data snapshot format Data snapshots give you access to the Overton database in machine readable form so that you can import it into your own database or BI system. Each snapshot is a tar.gz file containing a set of JSONL files containing document metadata and…

  • Using policy related metrics responsibly in research assessment

    Important things to know if you’re planning to use metrics or indicators based on Overton’s data Overton’s search and filtering capability makes it quick and easy to find policy documents authored by your academics or citing your institution’s research. Often you’ll want to focus on the qualitative aspects of the…

  • Overton’s data in bullet points

    Briefly covers Overton’s data and how it differs from other policy tracking systems Overton is the world’s largest database of policy documents (“documents written primarily for or by policymakers”) and the relationships between them. We systematically add sources that meet our minimum criteria and in response to user requests. We…

  • Documents in different languages

    What languages does Overton support? Overton is largely language agnostic Overton is largely language agnostic (with some caveats – see below) and documents are indexed, analyzed and made available for search regardless of the language or alphabet that they’re written in. To make browsing easier titles are translated into English…