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From "Thomas Jungblut (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-488) PageRank refactor and fix bugs
Date Sat, 14 Jan 2012 12:02:40 GMT

    [ https://issues.apache.org/jira/browse/HAMA-488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13186176#comment-13186176
] 

Thomas Jungblut commented on HAMA-488:
--------------------------------------

It's a problem with the dangling node "youtube.com". It still has the pagerank from the beginning
of the computation which is 1/7=0.1428.

Why is he never updated?
No one is sending a message to youtube.com because it has no inlinks and so he will never
calculate a new pagerank for youtube.com. 

Here is the adjacency list FYI:

{noformat}
stackoverflow.com	[yahoo.com]
google.com	[]
facebook.com	[twitter.com, google.com, nasa.gov]
yahoo.com	[nasa.gov, stackoverflow.com]
twitter.com	[google.com, facebook.com]
nasa.gov	[yahoo.com, stackoverflow.com]
youtube.com	[google.com, yahoo.com]
{noformat}
                
> PageRank refactor and fix bugs
> ------------------------------
>
>                 Key: HAMA-488
>                 URL: https://issues.apache.org/jira/browse/HAMA-488
>             Project: Hama
>          Issue Type: Bug
>          Components: examples
>            Reporter: Edward J. Yoon
>            Assignee: Thomas Jungblut
>             Fix For: 0.4.0
>
>         Attachments: HAMA-488_1_linux.patch, HAMA-488_WINDOWS.patch, HAMA-488_v02.patch,
pagerankAdjacencylist.seq
>
>
> We have to check this example before release 0.4.

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