The Neighborhood Auditing Tool (NAT)

NAT Features

The NAT includes a number of unqiue features that set it apart from other UMLS browsers.
  • Innovative Text/Diagram Hybrid Interface - The NAT has improved the navigation of large terminologies. Our unique text/diagram interface allows quick navigation and analysis of concept neighborhoods. While the NAT was designed with auditing in mind, we have found it also useful as a terminology browser.

  • Select Which Sources You Want - The NAT allows you to select which sources you want to use from the UMLS. You can specificy any subset of sources within the UMLS that you would like to use in the NAT.

  • Semantic Network - Many UMLS auditing techniques involve the Semantic Network. To support this work, we have fully integrated Semantic Network data into our tool. See where a concept's semantic type is within the semantic type tree in a single click. See the semantic types of all the concepts related to a given concept. View the entire semantic network in diagram form.

  • No Installation - The UMLS contains large quantities of information. Installing the UMLS is a time consuming and difficult process. The NAT requires no installation, it is simply started from your Web browser. The NAT is kept up to date with the latest UMLS releases and also provides access to releases dating back to 2006.

  • Anyone Can Use it - There are three levels of access. We've provided one version which contains only sources in the public domain ("Level 0"), meaning anyone can use it. Users with a SNOMED CT license have access to the full SNOMED CT subset from the UMLS. Users with a valid UMLS license from the NLM can access the entire UMLS straight from the NAT.

  • Use it Anywhere - The NAT was developed using the latest Java technologies. This means it can be used ton any operating system or any computer. Windows, Mac, Linux are supported as long as you have the latest version of the Java Virtual Machine installed.

NAT Introduction Video


Watch our introductory video and see the NAT in action!

NAT Tutorial Video


Learn how to use the NAT in this tutorial video.