Hi, Thanks for sharing your opinion!
In <CAJPUwMBV5pkiXqY1-hsfP=2qgjqg-hmkzmwmqa3jkddfxss...@mail.gmail.com> "Re: Is sparse matrix in Apache Arrow scope?" on Tue, 18 Apr 2017 11:41:48 -0400, Wes McKinney <wesmck...@gmail.com> 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: https://issues.apache.org/jira/browse/ARROW-854 Thanks, -- kou
