WSSSE in Mahout

2014-05-28 Thread Stuti Awasthi
Hi All, I want to calculate Within Set Sum of Squared Errors(WSSSE) in KMeans Cluster output . Is this same as : ClusterEvaluator.intraClusterDensity or do we have any other method to calculate the same. Thanks Stuti Awasthi ::DISCLAIMER::

Re: Indicator Matrix and Mahout + Solr recommender

2014-05-28 Thread Pat Ferrel
That’s what I thought, also why the total number of indicators is not limitable, right? For the Spark version, should we allow something like an average number of indicators per item? We will only be supporting LLR with that and as Ted and Ken point out that is the interesting thing to limit.