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From Kouhei Sutou <>
Subject Re: Is sparse matrix in Apache Arrow scope?
Date Wed, 19 Apr 2017 05:07:40 GMT

Thanks for sharing your opinion!

In <>
  "Re: Is sparse matrix in Apache Arrow scope?" on Tue, 18 Apr 2017 11:41:48 -0400,
  Wes McKinney <> wrote:

> Did you want to propose metadata and a memory layout / data structure for
> these, and we can discuss there?

Ah, no. I just want to introduce Apache Arrow to Ruby
users. I need to know about the current Apache Arrow and the
future Apache Arrow for it.

There are some Ruby libraries that support sparse matrix but
there is no de facto standard library like scipy.sparse. If
Ruby users work together with other language users via
Apache Arrow, Ruby users will be happy. (And I hope other
language users are also happy.)

I'm not a sparse matrix expert yet. So I have no idea that
cares high performance yet. I guess that existing library
such as scipy.sparse based a memory layout / data structure
is better.

Anyway, I opened an issue for discussing about this:


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