unfortunately, result hit by the lucene full-text are not yet meaningful:
it is not clear which score or sorting rationale it is used.
Is it possible to try out the sort() function of *QueryContext* class in
neo4j-rest-client (or any other python driver)?
something like:
i1.query("name","united states").sort()
and *then paginate results*?
Is it possible to expose the score assigned to a lucene index?
http://neo4j.com/docs/stable/indexing-lucene-extras.html#indexing-lucene-sort
Il giorno giovedì 20 agosto 2015 14:56:11 UTC+2, gg4u ha scritto:
>
> I am recreating lucene indexes with neo4j-rest-client:
>
> http://neo4j-rest-client.readthedocs.org/en/latest/indices.html
>
>
> Will sorting be applied by default by lucene?
> If not or not satisfactory, how to change sorting ?
>
> E.g. syntax in python driver:
> i1.add("key", "value", n2)
>
> looks like:
>
> assertContains( index.query( "name", "\"Thomas Anderson\"" ), node );
>
>
> in http://neo4j.com/docs/stable/indexing-create-advanced.html
> and we are all happy.
>
> But I cannot find info about sorting:
>
> http://neo4j.com/docs/stable/indexing-lucene-extras.html#indexing-lucene-sort
>
> My goal is to limit the query to a few results, ALREADY sorted
> (and not sorting all results having matched a full-text query).
>
>
> Il giorno mercoledì 19 agosto 2015 23:30:29 UTC+2, gg4u ha scritto:
>>
>> Hi, I am struggling to overcome the problem that query:
>>
>> START
>>
>> against a full-text index will display results not meaningfully sorted.
>>
>> E.g. using wikipedia as mockup data:
>> query
>> 'united states'
>>
>> will hit, as first result:
>> 'List of United States National Historic Landmarks in United States
>> commonwealths and territories, associated states, and foreign states'
>>
>>
>> I cannot paginate results, cause first results would be meaningless.
>> I have to fetch *all *results first, and then (in python) order them -
>> but it takes too long and it s not the way to go.
>>
>> I posted also a question on SO:
>>
>> http://stackoverflow.com/questions/31862761/search-queries-in-neo4j-how-to-sort-results-in-neo4j-in-start-query-with-intern
>>
>> and then found a comment of Michael answering to a similar question:
>>
>> http://stackoverflow.com/questions/26497068/lucene-in-neo4j-has-some-misbehaviours-in-terms-of-reliable-search-querys-comp
>>
>>
>>> #1 can be handled in Neo4j's Java API by using index.query(new
>>> QueryContext(query).sort(Sort.RELEVANCE));
>>
>>
>> So far I've been learning and using cypher and python, never used java.
>> Could you please suggest *any* tutorial or how to in *python*, or at
>> least appoint to which files should I look to modify if JAVA is the only
>> way, so to obtain a meaningful relevance of results in START query that I
>> can paginate?
>>
>> I haven't found this aspect in neo4j-rest-client or, if there are, it is
>> not clear to me if sort.relevance is covered:
>> http://neo4j-rest-client.readthedocs.org/en/latest/indices.html
>>
>> It is an important aspect of (my) application cause it allows to start
>> the traversal and any operation on the graph.
>>
>>
>>
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