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https://issues.apache.org/jira/browse/MADLIB-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15954038#comment-15954038
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Nandish Jayaram commented on MADLIB-1082:
-----------------------------------------
Proposed interface with grouping includes a new parameter called
{{grouping_cols}}:
{code:sql}
pagerank(
vertex_table,
vertex_id,
edge_table,
edge_args,
out_table,
damping_factor,
max_iter,
threshold,
grouping_cols -- A single column or a list of comma-separated
-- columns that divides the input data into discrete groups
)
{code}
The output table will have the page rank values of nodes wrt groups.
{{grouping_cols}} columns, along with the {{vertex_id}} and {{pagerank}}
columns will be included in the output table. A summary table named
{{out_table}}_summary will also be created, that would contain the
number of iterations required for each group to converge.
> Graph - add grouping to page rank
> ---------------------------------
>
> Key: MADLIB-1082
> URL: https://issues.apache.org/jira/browse/MADLIB-1082
> Project: Apache MADlib
> Issue Type: Improvement
> Components: Module: Graph
> Reporter: Frank McQuillan
> Assignee: Nandish Jayaram
> Priority: Minor
> Fix For: v1.11
>
>
> Add grouping column to edge table to support separate page rank calculations
> by group
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