`7/30/2014`

We just released a new UMBEL ontology graph analysis web service endpoint: the Shortest Path web service endpoint.

The `Shortest Path`

Web service is used to get the shortest path between two UMBEL reference concepts by following the path of a transitive property. The concepts that belong to that path will be returned by the server.

This web service is similar to the `distance`

web service endpoint but the actual path is shown. This web service is (marginally more useful) than `distance`

. So if you donâ€™t need to know the actual concepts that participate in the shortest path between two concepts, then you should be using the `distance`

web service endpoint instead.

The graph created by the UMBEL reference concepts ontology is a mostly an directed acyclic graph (DAG). This means that a given pair of concepts is not necessarily linked via all the properties. In these cases, the shortest path returns an error message rather than the path concepts.

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