Egon, Vladimir,

Thanks for clarification.  I mean indeed Resource Description Framework
http://www.w3.org/RDF/, which is used to in semantic web to describe
very different objects, not only chemistry-related.

The idea is to describe each of OpenTox resources and their
relationships in RDF , ideally, using existing RDF descriptions for
common objects like molecules , properties, units, etc. eventually
define our objects and define the relationships between them. RDF and
OWL (ontologies) can be used together, thus specifying metadata for
objects in a standardized way.

MDL's RDF is not related to Resource Description Framework, it is a
coincidence the abbreviation is the same.

Best regards,
Nina

Egon Willighagen wrote:
> On Fri, Oct 2, 2009 at 1:54 PM, Poroikov V.V.
> <vladimir.poroikov at ibmc.msk.ru> wrote:
>   
>> Thank you for the explanation. There is also another RDF:
>>
>> About RDF data:
>> MDL's RDF format is a loosely documented format, and is used for many
>> purposes, primarily for storing reactions and for storing hierarchical data
>> to file.
>>     
>
> Yes, and there is yet another RDF in molecular descriptors, the Radial
> Distribution Function.
>
> But the topic was: Resource Description Framework (for clarity).
>
> Egon
>
>