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