word2vec Binary Index & Locally-Sensitive Hashing Module

```
Just released a Ruby module that builds an index of a binary word2vec vector
file, so your code can seek directly to the right position in the file for a
given word or term. For example, the word "/en/italy" in the English
"freebase-vectors-skipgram1000-en.bin" file is at byte position 116414 position.

The module also computes a locally-sensitive hash for each vector in a binary
word2vec file, so you can do a nearest neighbor search (i.e. cosine distance)
much faster. I get a couple orders of magnitude better performance on my
machine, with a 10 bit random projection LSH.

https://github.com/someben/treebank/blob/master/src/build_word2vec_index.rb

Thanks for the project, Tomas.

Best,
Ben

```

Original issue reported on code.google.com by `bgimp...@googlemail.com` on 23 Sep 2013 at 3:48