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Hi Ethan I am trying to install your fork of [implicit library](https://github.com/EthanRosenthal/implicit) but I am not able to install it. Can you please look into this issue. ``` !git clone...

https://github.com/EthanRosenthal/DataPiques_source/blob/master/content/notebooks/2015-11-02-intro-to-collaborative-filtering.ipynb The implementation of function "fast_similarity" is pretty nice. According to cosine similarity formula, I found the function "slow_similarity" seems to have an mistake. "sim[u, uprime] = ratings[u, i] *...

What do you think about this? Fraught with local minima? Perhaps. But will it work? I claim yes.