Ontology Tools
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i2b2 Sponsored Project - NCBO Ontology Tools

The i2b2 Hive software is composed of core modules called 'cells' that create a system to allow the use of patient data for research. These cells communicate through web services and use i2b2 standard XML messages to transfer ontology-related metadata.  To date, a subset of ICD-9 has been provided with the i2b2 demo software package.  There has been a need in the community for access to a complete ICD-9 ontology as well as other clinical-based ontologies.

Extraction tool

 NCBO hosts a repository of biomedical ontologies.  These ontologies are stored in formats that are not understood by i2b2.  A command line tool has been developed to not only extract these ontologies via bioportal REST services, but to transform them into a format that is understood by the i2b2 ONT cell.

Mapping tools

 A set of mapping tools have been created for the workbench.  These tools were designed to assist users in assigning, editing and verifying mappings between ontologies.  These tools consist of a set of workbench plugins and a new Mapper cell (MAP)

Integration tool

A command line integration tool has been developed that integrates a source ontology into the hierarchy of a target ontology as dictated by the mappings between the two. 

Tutorials

i2b2 Ontology Tutorial - Step by step example of how metadata trees are created and configured using both Edit View and Extraction tool

i2b2/NCBO Ontology tools overview  -  Overview of the extraction, mapping and integration tools and how they work together.


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