[
https://issues.apache.org/jira/browse/SPARK-19144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hyukjin Kwon resolved SPARK-19144.
----------------------------------
Resolution: Incomplete
> Add test for GaussianMixture with distributed decompositions
> ------------------------------------------------------------
>
> Key: SPARK-19144
> URL: https://issues.apache.org/jira/browse/SPARK-19144
> Project: Spark
> Issue Type: Test
> Components: ML
> Reporter: Yanbo Liang
> Priority: Minor
> Labels: bulk-closed
>
> {code}
> test("check distributed decomposition") {
> val k = 5
> val d = decompositionData.head.size
> assert(GaussianMixture.shouldDistributeGaussians(k, d))
> val gmm = new
> GaussianMixture().setK(k).setSeed(seed).fit(decompositionDataset)
> assert(gmm.getK === k)
> }
> {code}
> In ML {{GaussianMixtureSuite}}, the above test only check that when we
> distribute the computation that it produces a model, but does not check that
> it produces a correct model.
> It should have, but depends on {{GaussianMixture}} can be set with
> initialModel (SPARK-15785), otherwise, this algorithm seems incapable of
> learning even this very contrived example. After that was resolved, we can
> add a correctness test in the above case.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
