i am currently working on a university project regarding the clustering of materials. i was already working with knime clustering my test data and it worked quite good. but since i got a real data set with about 16000 elements it can´t perform hierarchical methods due to the reached heap scape maximum. i tried to manually change the heap scape but it only worked up to 2048mb.
so isn´t there any possibility to increase the heap scape and run the large data set analysis?
if yes, do you know whether its possible to run a scree test on dendrograms in knime? i couldnt find any suitable nodes.
one last question on kmeans clustering. am i right, it isn´t possible to manually set the initial cluster centres?
big thanks for your support!