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Posted to issues@arrow.apache.org by "Kouhei Sutou (JIRA)" <ji...@apache.org> on 2017/04/19 04:37:42 UTC

[jira] [Created] (ARROW-854) [C++] Support sparse matrix

Kouhei Sutou created ARROW-854:
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             Summary: [C++] Support sparse matrix
                 Key: ARROW-854
                 URL: https://issues.apache.org/jira/browse/ARROW-854
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++, Format
            Reporter: Kouhei Sutou
            Priority: Minor


From http://mail-archives.apache.org/mod_mbox/arrow-dev/201704.mbox/%3CCAJPUwMBV5pkiXqY1-hsfP%3D2qgjQg-hMKZMwmQa3jKdDfxSS26A%40mail.gmail.com%3E

bq. since we have metadata for tensors/ndarrays and support in C++, having analogous metadata for sparse matrices seems reasonable. Someone else asked me about this in person recently (related to machine learning applications).

bq. While many Arrow implementations will be focused on the in-memory columnar / record batch data model, having these traditional scientific computing memory layouts available for shared memory IPC will open up the Arrow C/C++ libraries to more use cases. We wouldn't necessarily expect other Arrow implementations (like Java) to implement these, though, unless they needed them.




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