I've got a matrix transformation that I'm doing which is really slow. I'm looking for ways to speed it up.
source is a NxD matrix (seqs of seqs of values). I will set and read this matrix. dest is a NxN transformation of f in which indices are mapped to specific indices of f. I will only read this matrix, not set it. If I place a value in one cell of source, it may show up in 30 other places in dest due to a mapping function. I then use dest for some simple matrix operations. The mapping that I use is generated once, however it has to be applied to the source very frequently. Is there any way I could define dest with memory locations that correspond to the mapped locations of source? This would allow me to define the mapping once. Subsequently I could simply set source and read dest with the changes already propagated. I've thought about using seqs of seqs of refs in source, then assigning those same refs to the mapped locations of dest, but I'm not sure if there is some other overhead hit I would take from setting and reading the refs. What is the right solution? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
