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2002 Feb 15
1
cmdscale k=1
In applying multidimensional scaling, it seems to me that sometimes the underlying dimensionality of the matrix is 1. However I found a case where cmdscale failed when I tried k=1. Here it is: m<-matrix( c(.5,.81,.23,.47,.61, .19,.5,.06,.17,.28, .77,.94,.5,.74,.85, .53,.83,.26,.5,.64, .39,.72,.15,.36,.5), nrow=5) # BTW I think cmdscale uses only the lower triangle--how to enter only # that
2014 Jan 28
3
[LLVMdev] MergeFunctions: reduce complexity to O(log(N))
Hi Stepan, Sorry for the delay. It's great that you are working on MergeFunctions as well and I agree, we should definitely try to combine our efforts to improve MergeFunctions. Just to give you some context, the pass (with the similar function merging patch) is already being used in a production setting. From my point of view, it would be better if we focus on improving its capability
2014 Jan 30
3
[LLVMdev] MergeFunctions: reduce complexity to O(log(N))
...39 0 0.02 163539 md_high.ll 1 124678 0 0.02 124657 0 0.02 124657 md_highloss.ll 1 128198 0 0.02 128177 0 0.02 128177 md_low.ll 1 156206 0 0.02 156185 0 0.02 156185 me_distortion.ll 21 382990 0 0.04 382969 0 0.04 380522 me_epzs.ll 26 932551 0 0.08 932530 0 0.09 932530 me_fullfast.ll 10 268886 0 0.03 268865 0 0.03 268865 me_fullsearch.ll 5 205532 0 0.02 205511 0 0.02 205511 memalloc.ll 47 144392 0 0.02 144371 * * * member-function-pointers.ll 6 7652 0 0.01 7641 0 0.01 7641 MemBlocks.ll 16 46800 0 0.01 46768 0 0.01 46768 memory.ll 12 44937 0 0.01 44907 0 0.01 44907 methcall.ll 9 15754 0 0.01 15735 0 0....