We did, and we've been talking to the developers about a potential future collaboration. Our goals are really complementary; hiphip is about getting your code

We did, and we've been talking to the developers about a potential future collaboration. Our goals are really complementary; hiphip is about getting your code into the inner loop of Java bytecode (not just a set of canned operations), whereas core.matrix is about abstractions for a fixed set of operations across different matrix types. There may eventually be overlap, if core.matrix gets into compiling expressions into new operation types, which sounds like something they're interested in.