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[bioontology-support] Problem when using Restful API for Bioportal

Natasha Noy noy at
Wed Dec 16 18:50:16 PST 2009

Dear Yining,

Sorry -- we should put this on the wiki (it just slipped through the  
cracks): the hierarchy services are available only for one version of  
the ontology (usually the latest). The term services are available for  
all explorable versions.

You are trying to use hierarchy services for an older version of NCIT,  
and that is not available.

In case you are curious why this is the case: we build a separate  
index with precomputed transitive closure of hierarchy relations to  
make the hierarchy services fast. Because of the size of this index,  
we keep only one version there.

Do you need specifically hierarchy services for older versions of  
NCIT? If yes, can you describe in a bit more detail what you need and  
maybe we can help you figure out how to get this information our of  
the concept services.

Thank you!


On Dec 14, 2009, at 1:11 PM, yining zhao wrote:

> Hello,
> My name is Yining Zhao. I'm from the Department of Biomedical  
> Informatics at University of Pittsburgh. I'm trying to use your  
> Restful API to build an index for the NCI Thesaurus, and I got a  
> problem. The examples on 
>  work really well. However, the version of NCI Thesaurus I want to  
> use is 09_05d, ontology version ID 40377. I constructed some simple  
> queries like:
> Those don't work.
> On the contrary, this one works fine:
> Please take a look and tell me what is problem. Thank you very much.
> By the way, your API is fantastic :)
> Cheers,
> Yining Zhao
> _______________________________________________
> bioontology-support mailing list
> bioontology-support at

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