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https://issues.apache.org/jira/browse/FLINK-1707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15442548#comment-15442548
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Josep Rubió commented on FLINK-1707:
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Hi [~vkalavri]
I've pushed a new version of AP with following changes:
https://github.com/joseprupi/flink/blob/vertexcentric/flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/AffinityPropagation.java
- I've changed the model to the vertex centric avoiding having the values in
the the vertices
- I've added the option of no damping. When a 0 factor of damping is passed to
the constructor the convergence condition is no changes on the exemplars on a
certain number of iterations. This number of iterations is the last parameter
of the constructor. If a damping factor different to 0 is used it keep working
as before, having to hold the old sent values in the vertex.
To do:
- I have not changed the initialization of the graph yet. I posted a question
in dev thread with no much luck. Maybe I will implement an initialization with
a similarity matrix for now and will see how I can do it using gelly
functionality later
- I will try to change where are the weight values to be in the edges instead
of vertices (I've created a new version of the design document with the
diagrams too). This way vertices will only have the old values in case the
damping factor has to be used.
> Add an Affinity Propagation Library Method
> ------------------------------------------
>
> Key: FLINK-1707
> URL: https://issues.apache.org/jira/browse/FLINK-1707
> Project: Flink
> Issue Type: New Feature
> Components: Gelly
> Reporter: Vasia Kalavri
> Assignee: Josep Rubió
> Priority: Minor
> Labels: requires-design-doc
> Attachments: Binary_Affinity_Propagation_in_Flink_design_doc.pdf
>
>
> This issue proposes adding the an implementation of the Affinity Propagation
> algorithm as a Gelly library method and a corresponding example.
> The algorithm is described in paper [1] and a description of a vertex-centric
> implementation can be found is [2].
> [1]: http://www.psi.toronto.edu/affinitypropagation/FreyDueckScience07.pdf
> [2]: http://event.cwi.nl/grades2014/00-ching-slides.pdf
> Design doc:
> https://docs.google.com/document/d/1QULalzPqMVICi8jRVs3S0n39pell2ZVc7RNemz_SGA4/edit?usp=sharing
> Example spreadsheet:
> https://docs.google.com/spreadsheets/d/1CurZCBP6dPb1IYQQIgUHVjQdyLxK0JDGZwlSXCzBcvA/edit?usp=sharing
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