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https://issues.apache.org/jira/browse/FLINK-2073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559519#comment-14559519
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ASF GitHub Bot commented on FLINK-2073:
---------------------------------------
Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/727#discussion_r31062344
--- Diff: docs/libs/ml/contribution_guide.md ---
@@ -20,7 +21,329 @@ specific language governing permissions and limitations
under the License.
-->
+The Flink community highly appreciates all sorts of contributions to
FlinkML.
+FlinkML offers people interested in machine learning to work on a highly
active open source project which makes scalable ML reality.
+The following document describes how to contribute to FlinkML.
+
* This will be replaced by the TOC
{:toc}
-Coming soon. In the meantime, check our list of [open issues on
JIRA](https://issues.apache.org/jira/browse/FLINK-1748?jql=component%20%3D%20%22Machine%20Learning%20Library%22%20AND%20project%20%3D%20FLINK%20AND%20resolution%20%3D%20Unresolved%20ORDER%20BY%20priority%20DESC)
+## Getting Started
+
+In order to get started first read Flink's [contribution
guide](http://flink.apache.org/how-to-contribute.html).
+Everything from this guide also applies to FlinkML.
+
+## Pick a Topic
+
+If you are looking for some new ideas, then you should check out the list
of [unresolved issues on
JIRA](https://issues.apache.org/jira/issues/?jql=component%20%3D%20%22Machine%20Learning%20Library%22%20AND%20project%20%3D%20FLINK%20AND%20resolution%20%3D%20Unresolved%20ORDER%20BY%20priority%20DESC).
+Once you decide to contribute to one of these issues, you should take
ownership of it and track your progress with this issue.
+That way, the other contributors know the state of the different issues
and redundant work is avoided.
+
+If you already know what you want to contribute to FlinkML all the better.
+It is still advisable to create a JIRA issue for your idea to tell the
Flink community what you want to do, though.
+
+## Testing
+
+New contributions should come with tests to verify the correct behavior of
the algorithm.
+The tests help to maintain the algorithm's correctness throughout code
changes, e.g. refactorings.
+
+We distinguish between unit tests, which are executed during maven's test
phase, and integration tests, which are executed during maven's verify phase.
--- End diff --
Good catch.
> Add contribution guide for FlinkML
> ----------------------------------
>
> Key: FLINK-2073
> URL: https://issues.apache.org/jira/browse/FLINK-2073
> Project: Flink
> Issue Type: New Feature
> Components: Documentation, Machine Learning Library
> Reporter: Theodore Vasiloudis
> Assignee: Till Rohrmann
> Fix For: 0.9
>
>
> We need a guide for contributions to FlinkML in order to encourage the
> extension of the library, and provide guidelines for developers.
> One thing that should be included is a step-by-step guide to create a
> transformer, or other Estimator
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