This package Mondriaan does not seem like what I really want. <br><br>I guess the form I want is known as "single border block angular". The type of thing you would want for Dantzig-Wolfe decomposition.<br> <a href="http://en.wikipedia.org/wiki/File:DW_Block_Angular_Matrix.jpg">http://en.wikipedia.org/wiki/File:DW_Block_Angular_Matrix.jpg</a><br>
<br>Does anyone know of a package that does this heuristically (i.e., reorders the rows)? Or has anyone done something like this with COIN?<br><br><div class="gmail_quote">Thanks,<br>Mat<br><br><br><br><br><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
This looks fairly easy to use so I was going to try it:<br> <a href="http://www.math.uu.nl/people/bisseling/Mondriaan/" target="_blank">http://www.math.uu.nl/people/bisseling/Mondriaan/</a><br><br>It wants this format:<br>
<a href="http://math.nist.gov/MatrixMarket/formats.html#mtx" target="_blank">http://math.nist.gov/MatrixMarket/formats.html#mtx</a><br>
<br>Has anyone written a MPS to MatrixMarket format convertor? I just figured I'd ask before I write it - I think it will be easy.<br><br>Thanks,<br>Matt<div><div></div><div class="h5"><br><br><br><br><div class="gmail_quote">
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Has anyone used COIN together with some package (MeTiS? or any other?) to bring a matrix into block angular form? I am looking to read in an MPS file - into OSI or CoinMpsIO or something like this, run one of these heuristic methods and then return the rows/cols in each block. <br>
<br>Thanks,<br>Matt<br>
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