Github user dbtsai commented on the pull request:
https://github.com/apache/spark/pull/9386#issuecomment-152937577
Seems that the implementation of personalized page rank doesn't follow the
twitter's paper entirely when initializing the initial page rank. In the paper,
only the source node should be activated. This PR addresses this issue.
+cc @dwmclary @ankurdave @rxin @jegonzal for more feedback.
Thanks.
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