Mathematical Data Formats
"Graphlet" — GML graph data format (.gml)
"DOT" — DOT graph data format (.gv, .dot)
"GraphML" — GraphML data format (.graphml)
"GXL" — GXL graph data format (.gxl)
"DIMACS" — DIMACS graph data format (.col, .col.b)
"Graph6" — dense graph data format (.g6)
"Sparse6" — sparse graph format (.s6)
"LEDA" — LEDA format (.gw, .lgr)
"Pajek" — Pajek graph data (.net)
"TGF" — trivial graph format (.tgf)
"MAT" — Matlab/Octave data format (.mat)
"MTX" — Matrix Market sparse matrix format (.mtx)
"HarwellBoeing" — Harwell-Boeing sparse matrix formats
