Hi all,

I would like to enhance QsarDB with BODO descriptors. There are two
issues I need to address: 1) to specify what exactly constitutes a
descriptor "definition", 2) to devise an appropriate serialization
method for it.

A good starting point is to look into CDK descriptor classes, for
example, into the XLogPDescriptor class. I can see that the descriptor
"definition" consists of two parts. The first part is the descriptior
specification as specified by IDescriptor#getSpecification(), and the
second part is the collection of parameters as specified by
IDescriptor#getParameterNames() and #getParameters().

The descriptor specification is a set of four predefined attributes.
The most important of them is the specification reference. For the
XLogPDescriptor class it's the URL
"http://www.blueobelisk.org/ontologies/chemoinformatics-algorithms/#xlogP";.
However, when I try this URL I get an HTTP 403 error. What to make of
it? Are all the specification reference URLs broken "by design" from
the beginning, or is it some kind of recent development? Where can I
find the complete list of specification reference URLs?

Descriptor parameters are name-value pairs. For the XLogPDescriptor
class they are "checkAromaticity" and "salicylFlag". Are the
parameters part of the BODO or are they descriptor implementation
dependent?

For some reason CDK descriptor classes do not implement the
java.io.Serializable interface. If they did it would be
straightforward to use the Java serialization API to share descriptor
instances as plain *.ser files. What have you done to work around this
limitation? More specifically, is there a BO-approved solution (an XML
Schema perhaps) for descriptor serialization?


VR

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