ensemble learning

ThiruThiru Member Posts: 100 Guru
I tried a data set with ensemble learning (using KNN, decision tree, Naïve bayes). Im not able to see any improvement in the accuracy/precision/recall.  

1.  Is there any way to view the performance of individual models while using ensemble learning. - to compare the performance of the individual as well as ensemble in a single process.

2.  when I use generate weight option  - there is a warning for Knn - sub model ,     saying " input example set has example weights, but learner will ignore them".  Even if we say -the learner ignores, the accuracy still reduces.  First of all what is that warning coming only for Knn and its impact?


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