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Sean Owen commented on MAHOUT-942: ---------------------------------- Ikumasa do you have a patch for this? > Improbe the way to process the missing value for DF. > ---------------------------------------------------- > > Key: MAHOUT-942 > URL: https://issues.apache.org/jira/browse/MAHOUT-942 > Project: Mahout > Issue Type: Improvement > Components: Classification > Reporter: Ikumasa Mukai > Labels: DecisionForest > > If we process the data which contains the missing value("?"), > the tree cannot be created because DataConverter.convert inserts the null > value > to the list of Instances. > Of cause we can fix this issue with prohibiting DataConverter.convert insert > the null value, but I notice that there is a potentiality that the rows > which have missing value("?") can be also used to make the tree. > We can use them for making all stems on the edge where we use the missing > value. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira