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Andrew Musselman edited comment on MAHOUT-1505 at 5/30/14 10:28 PM: -------------------------------------------------------------------- Attaching a patch for this and will do a pull request. Here's what the output of ClusterDumper looks like up to whitespace; could someone please try this out and let me know what comments you have? It affects any use of AbstractCluster.formatVector(), which I checked always occurs in printlns and logging. {code:javascript} { "top_terms": [ {"all":3.0149030685424805}, {"english":3.0149030685424805}, {"best":3.0149030685424805}, {"spaniel":3.0149030685424805}, {"springer":3.0149030685424805}, {"dogs":1.9162907600402832} ], "cluster_id": 7, "cluster": { "r": [], "c": [ {"all":3.015}, {"best":3.015}, {"dogs":1.916}, {"english":3.015}, {"spaniel":3.015}, {"springer":3.015} ], "n": 1, "identifier": "C-7" }, "points": [ { "point": [ {"all":3.015}, {"best":3.015}, {"dogs":1.916}, {"english":3.015}, {"spaniel":3.015}, {"springer":3.015} ], "vector_name": "P(14)", "weight": "1.0" } ] } {code} was (Author: andrew.musselman): Attaching a patch for this and will do a pull request. Here's what the output of ClusterDumper looks like up to whitespace; could someone please try this out and let me know what comments you have? It affects any use of AbstractCluster.formatVector(), which I checked always occurs in printlns and logging. {code:javascript} { "top_terms": [ {"all":3.0149030685424805}, {"english":3.0149030685424805}, {"best":3.0149030685424805}, {"spaniel":3.0149030685424805}, {"springer":3.0149030685424805}, {"dogs":1.9162907600402832} ], "cluster_id": 7, "cluster": { "r": [], "c": [ {"all":3.015}, {"best":3.015}, {"dogs":1.916}, {"english":3.015}, {"spaniel":3.015}, {"springer":3.015} ], "n": 1, "identifier": "C-7" }, "points": [ { "point": [ {"all":3.015}, {"best":3.015}, {"dogs":1.916}, {"english":3.015}, {"spaniel":3.015}, {"springer":3.015} ], "vector_name": "P(14)", "weight": "1.0" } ] } {code} > structure of clusterdump's JSON output > -------------------------------------- > > Key: MAHOUT-1505 > URL: https://issues.apache.org/jira/browse/MAHOUT-1505 > Project: Mahout > Issue Type: Bug > Components: Clustering > Affects Versions: 0.9 > Reporter: Terry Blankers > Assignee: Andrew Musselman > Labels: json > Fix For: 1.0 > > > Hi all, I'm working on some automated analysis of the clusterdump output > using '-of = JSON'. While digging into the structure of the representation of > the data I've noticed something that seems a little odd to me. > In order to access the data for a particular cluster, the 'cluster', 'n', 'c' > & 'r' values are all in one continuous string. For example: > {noformat} > {"cluster":"VL-10515{n=5924 c=[action:0.023, adherence:0.223, > administration:0.011 r=[action:0.446, adherence:1.501, > administration:0.306]}"} > {noformat} > This is also the case for the "point": > {noformat} > {"point":"013FFD34580BA31AECE5D75DE65478B3D691D138 = [body:6.904, > harm:10.101]","vector_name":"013FFD34580BA31AECE5D75DE65478B3D691D138","weight":"1.0"} > {noformat} > This leads me to believe that the only way I can get to the individual data > in these items is by string parsing. For JSON deserialization I would have > expected to see something along the lines of: > {noformat} > { > "cluster":"VL-10515", > "n":5924, > "c": > [ > {"action":0.023}, > {"adherence":0.223}, > {"administration":0.011} > ], > "r": > [ > {"action":0.446}, > {"adherence":1.501}, > {"administration":0.306} > ] > } > {noformat} > and: > {noformat} > { > "point": { > "body": 6.904, > "harm": 10.101 > }, > "vector_name": "013FFD34580BA31AECE5D75DE65478B3D691D138", > "weight": 1.0 > } > {noformat} > Andrew Musselman replied: > {quote} > Looks like a bug to me as well; I would have expected something similar to > what you were expecting except maybe something like this which puts the "c" > and "r" values in objects rather than arrays of single-element objects: > {noformat} > { > "cluster":"VL-10515", > "n":5924, > "c": > { > "action":0.023, > "adherence":0.223, > "administration":0.011 > }, > "r": > { > "action":0.446, > "adherence":1.501, > "administration":0.306 > } > } > {noformat} > {quote} -- This message was sent by Atlassian JIRA (v6.2#6252)