atrices/">The University of Florida Sparse Matrix Collection</a></li>
<li>Metis (.graph), <a href="http://www.cc.gatech.edu/dimacs10/">10th DIMACS Implementation Challenge</a></li>
<li>SNAP (.txt), <a href="http://snap.stanford.edu/">Stanford Network Analysis Project</a></li>
<li>Dimacs9th (.gr), <a href="http://www.dis.uniroma1.it/challenge9/">9th DIMACS Implementation Challenge</a></li>
<li>The Koblenz Network Collection (out.&lt; name &gt;), <a href="http://konect.uni-koblenz.de/">The Koblenz Network Col