As far as I know this is not exposed.

The closest that is there is to pass in a lucene query object into neo4j
when querying data (e.g. like sort or topk-documents)

You can have a look at the LuceneIndexImplementation.java class

For text categorization, Kenny wrote a Neo4j extension called graphify
which might be interesting for you to look at:
http://graphify.github.io/graphify/

Cheers,  Michael

On Wed, Nov 12, 2014 at 5:24 PM, Sky Hester <skyjhes...@gmail.com> wrote:

> I’m starting a project with the goal of clustering nodes by text
> properties in a Neo graph. The first, most straightforward step is to
> establish a performance baseline using term-vector methods, which is
> relatively easy with Lucene’s TermFreqVector. Storing term vectors is
> easy to do with Field. options to document.add(…) -- that's 
> org.apache.lucene.document.Document
> -- but the Neo4j API appears to expose only a wrapper around a
> document.add(…) with fixed parameters determined probably by the index
> configuration (that wrapper is the add method of org.neo4j.graphdb.index).
>
> Is anyone aware of a way to configure those parameters to accept field
> options (specifically for storing term vectors in this case)? I would be
> just fine with a global index config, since the per-document flexibility of
> field options in Lucene is not currently a requirement.
>
> This is in Neo4j 2.1.5 java API with Lucene version 3.6.2, which is the
> correct dependency for neo from what I can tell.
>
> Thank you for your time,
>
> -Sky
>
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