Hi
How come the render result of kmeans (iris data set) is so different between knime and rstudio
The rstudio is by far better, how could I get the same quality in knime?
and rStudio
Hi Xavier,
This seems to be a question for me 
I get the same results with KNIME if I only use sepal length and width for clustering. But if I include all four dimensions I get what you posted. It is also worth checking the Scatter Matrix, than you see all combinations.
k-means is not a deterministic algorithm. As it is greedy i can stop in local optima of the optimization problems. You can check this by shuffling the input data before the k-means node. Because the node will always use the first k rows for initializing the centers.
Could you post the R code you are using?
Best, Iris
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