Jeroen,
could you try to use the alternative syntax:
... groupCount(m) { it : it += 0.1 } ...
It seems to be a problem with evaluation of the string in the
javax.ScriptEngine for Groovy
Here is the output from my web-console:
• gremlin> m = [:];g.v(33).bothE().label.groupCount(m) { it }{ it +=
0.1 } >> -1;m
• ==> follows=11
• ==> owns=48
• gremlin> m = [:];g.v(33).bothE().label.groupCount(m) { it : it += 0.1
} >> -1;m
• ==> follows=1.1
• ==> owns=4.8
Michael
Am 07.11.2011 um 12:55 schrieb Jeroen van Dijk:
> Ok i think I found an example that is independent of my data (adapted from
> http://docs.neo4j.org/chunked/snapshot/gremlin-plugin.html)
>
> Locally:
> gremlin> m = [:];g.v(33).bothE().label.groupCount(m) >> -1;m
>
> ==>follows=11
> ==>owns=48
> gremlin> m = [:];g.v(33).bothE().label.groupCount(m) { it }{ it += 0.1 } >>
> -1;m
> ==>follows=1.1
> ==>owns=4.8
>
> REST/webadmin console:
> gremlin> m = [:];g.v(33).bothE().label.groupCount(m) { it }{ it += 0.1 } >>
> -1;m
> ==> follows=11
> ==> owns=48
> gremlin> m = [:];g.v(33).bothE().label.groupCount(m) { it }{ it += 10 } >>
> -1;m
> ==> follows=11
> ==> owns=48
> gremlin>
>
> It seems like the closure block is not evaluated (to me as a
> Groovy/Gremlin/Neo4j noob)
>
> Michael, I will send you a link to my database in private.
>
> Thanks,
> Jeroen
>
>
>
> On Mon, Nov 7, 2011 at 12:41 PM, Michael Hunger <
> michael.hun...@neotechnology.com> wrote:
>
>> Jeroen,
>>
>> that would indeed help a lot.
>> I'll find it.
>>
>> Michael
>>
>> Am 07.11.2011 um 12:34 schrieb Jeroen van Dijk:
>>
>>> Hi Michael,
>>>
>>> I would like to provide a better example, but my Groovy is quite poor so
>> it
>>> I'll take me some time. However I think the problem isn't in the JSON
>>> conversion. Because that would mean the results I get would be the same,
>>> but with a different score right? The thing is that I get different
>>> Vertices back through the REST interface than I do locally. To me that
>>> means things already fail during the Gremlin evaluation.
>>>
>>> I will try to come up with a more isolated example. If it helps I could
>>> give you access to my dataset on Heroku (or through a Zip file).
>>>
>>> thanks,
>>> Jeroen
>>>
>>> On Mon, Nov 7, 2011 at 11:34 AM, Michael Hunger <
>>> michael.hun...@neotechnology.com> wrote:
>>>
>>>> Jeroen,
>>>>
>>>> can you narrow it down to a simpler operation, like just a division?
>>>>
>>>> Perhaps in the conversion from the division result (be it Float, Double,
>>>> BigDecimal) to
>>>> JSON something goes awry.
>>>>
>>>> In the GremlinPlugin the code for that is:
>>>>
>>>> } else if (result instanceof Double || result instanceof Float) {
>>>> return ValueRepresentation.number(((Number)
>>>> result).doubleValue());
>>>> }
>>>>
>>>> I'm not sure what datatype groovy creates as result of your operation,
>>>> perhaps you can determine that as well.
>>>>
>>>> If we have a simple gremlin / groovy calculation that yields the wrong
>>>> results, we can easily inspect and fix the plugin.
>>>>
>>>> Thanks a lot
>>>>
>>>> Michael
>>>>
>>>> Am 07.11.2011 um 11:12 schrieb Jeroen van Dijk:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I'm using Gremlin to perform a recommendation query. Locally in the
>>>> gremlin
>>>>> shell I get amazingly useful results. However when I use the webadmin
>>>>> gremlin console I get different results, both locally and in the Heroku
>>>>> addon environment. I get the same wrong results when I use the rest
>>>>> interface, so I assume something is incorrect in the Gremlin REST
>>>>> interface. In all these cases the data is the same or on the same
>>>> database.
>>>>>
>>>>> The gremlin query is below (it is own of my first so probably not the
>>>> most
>>>>> efficient). It returns the top 10 list of most similar items according
>> to
>>>>> the Jaccard similarity index (= (Intersection(A, B) / Union(A, B) ):
>>>>>
>>>>> node = g.v(14260); m = [:].withDefault{0.0}; a_total =
>>>> node.inE().count();
>>>>> node.in().out('owns').sideEffect{union = a_total +
>>>>> it.inE().count()}.groupCount(m) { it }{ it += (1/(union)) } >> -1;
>>>>> m.sort{a,b -> b.value <=> a.value}[0..9]
>>>>>
>>>>> When I do the following locally everything is fine:
>>>>>
>>>>> gremlin> g = new
>>>>>
>> Neo4jGraph('/usr/local/Cellar/neo4j/community-1.4/libexec/data/graph.db')
>>>>> ==>neo4jgraph[EmbeddedGraphDatabase
>>>>> [/usr/local/Cellar/neo4j/community-1.4/libexec/data/graph.db]]
>>>>> gremlin> node = g.v(14260); m = [:].withDefault{0.0}; a_total =
>>>>> node.inE().count(); node.in().out('owns').sideEffect{union = a_total +
>>>>> it.inE().count()}.groupCount(m) { it }{ it += (1/(union)) } >> -1;
>>>>> m.sort{a,b -> b.value <=> a.value}[0..9]
>>>>> ==>v[14260]=0.5000000013
>>>>> ==>v[12974]=0.1014492752
>>>>> ==>v[12349]=0.0952380952
>>>>> ==>v[12082]=0.0833333332
>>>>> ==>v[15434]=0.0810810810
>>>>> ==>v[11237]=0.0810810810
>>>>> ==>v[17672]=0.0769230768
>>>>> ==>v[18338]=0.0769230768
>>>>> ==>v[12852]=0.0769230768
>>>>> ==>v[11969]=0.075
>>>>> gremlin>
>>>>>
>>>>> However when I repeat this using the webadmin console interface I get
>> the
>>>>> following results:
>>>>>
>>>>> gremlin> node = g.v(14260); m = [:].withDefault{0.0}; a_total =
>>>>> node.inE().count(); node.in().out('owns').sideEffect{union = a_total +
>>>>> it.inE().count()}.groupCount(m) { it }{ it += (1/(union)) } >> -1;
>>>>> m.sort{a,b -> b.value <=> a.value}[0..9]
>>>>> ==> v[14260]=31.0
>>>>> ==> v[9204]=30.0
>>>>> ==> v[8958]=29.0
>>>>> ==> v[15763]=22.0
>>>>> ==> v[13906]=22.0
>>>>> ==> v[18477]=21.0
>>>>> ==> v[9081]=20.0
>>>>> ==> v[9019]=19.0
>>>>> ==> v[9074]=18.0
>>>>> ==> v[9066]=18.0
>>>>>
>>>>> The values of a Jaccard Index should never be above 1 so something is
>>>>> clearly wrong. Any ideas?
>>>>>
>>>>> Thanks,
>>>>> Jeroen
>>>>> _______________________________________________
>>>>> Neo4j mailing list
>>>>> User@lists.neo4j.org
>>>>> https://lists.neo4j.org/mailman/listinfo/user
>>>>
>>>> _______________________________________________
>>>> Neo4j mailing list
>>>> User@lists.neo4j.org
>>>> https://lists.neo4j.org/mailman/listinfo/user
>>>>
>>> _______________________________________________
>>> Neo4j mailing list
>>> User@lists.neo4j.org
>>> https://lists.neo4j.org/mailman/listinfo/user
>>
>> _______________________________________________
>> Neo4j mailing list
>> User@lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>>
> _______________________________________________
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
_______________________________________________
Neo4j mailing list
User@lists.neo4j.org
https://lists.neo4j.org/mailman/listinfo/user
