Description
1.: http://lucene.472066.n3.nabble.com/URL-redirection-and-zero-scores-td3085311.html
2.: http://lucene.472066.n3.nabble.com/A-possible-solution-to-my-URL-redirection-and-zero-scores-problem-td3162164.html
Please note that also URLs redirected by meta refresh redirection do have invalid scores. For such URLs a CrawlDatum is created on the lines 157-177 of ParseOutputFormat.java (http://svn.apache.org/viewvc/nutch/branches/branch-1.3/src/java/org/apache/nutch/parse/ParseOutputFormat.java?view=markup). The new CrawlDatum's score isn't set anywhere after the creation so it's 1.0f as can be seen on the line 122 of CrawlDatum.java (http://svn.apache.org/viewvc/nutch/branches/branch-1.3/src/java/org/apache/nutch/crawl/CrawlDatum.java?view=markup).
It's another question whether the redirected URL's score should be just passed to the new URL or should the redirection be considered as a link in which case the new URL's score would be 'originalScore' / ('numberOfOutlinks' + 1).