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https://issues.apache.org/jira/browse/MADLIB-1084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408767#comment-16408767
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Himanshu Pandey commented on MADLIB-1084:
-----------------------------------------
Hi [~fmcquillan] ,
In case of grouping in Personalized Page Rank, what if :
# The nodes of interest are not present in the group?
# Or only a subset of nodes of interest is present in the group. What will be
the initial probability in this case?
For eg:
special nodes = 2, 3
Initial probability = 1 / number of special nodes = .5 for each special node
Random Prob = 1 - .85 = .15 for each special node.
{code}
| |special nodes = 2, 3| |
|Group 1|nodes|initial prob|random prob|
| |1|0|0|
| |2|0.5|0.15|
| |3|0.5|0.15|
| |4|0|0|
| |5|0|0|
| |6|0|0|
| | | | |
|Group 2| | | |
| |3|0.5 or 1?|0.15|
| |4|0|0|
| |5|0|0|
{code}
> Graph - Personalized PageRank
> -----------------------------
>
> Key: MADLIB-1084
> URL: https://issues.apache.org/jira/browse/MADLIB-1084
> Project: Apache MADlib
> Issue Type: New Feature
> Components: Module: Graph
> Reporter: Frank McQuillan
> Assignee: Himanshu Pandey
> Priority: Major
> Fix For: v1.14
>
>
> Personalized PageRank which is a variant of regular PageRank.
> Please refer to
> [http://madlib.apache.org/docs/latest/group__grp__pagerank.html] as a
> starting point.
> Reference:
> Neighborhood Formation and Anomaly Detection in Bipartite Graphs
> [http://www.cs.cmu.edu/~deepay/mywww/papers/icdm05.pdf]
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