mrkn commented on pull request #7044: URL: https://github.com/apache/arrow/pull/7044#issuecomment-654581941
> Hey @mrkn - sorry I didn't have capacity to reply for a while. No problem. Thank you for your cooperation! > If I remember correctly only SciPy has this architecture of COO index having two vectors instead of one 2D matrix. Not only scipy, but also [SuiteSparse](https://github.com/DrTimothyAldenDavis/SuiteSparse) employs the split format. > Question: could we handle this as a special case of COO tensor rather than a new type? Could we serialize `(row, col)` data as a single row major tensor of COO type and only deserialize it into the SciPy layout if desired? (I'm asking because I'm not sure if such approach is feasible) > Although we can handle the split-format as an internal variation of SparseCOOIndex, we still need to introduce the new flatbuffer type. > If we go for a new type - could I propose a name SparseCOOMatrix (as opposed to n-dimensional SparseCOOTensor). It could perhaps be shortened to `COOM`? The implementation in this pull-request can handle more than 2-dimension. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
