UF Sparse Matrix Collection: Chen group.

matrix	graph	Group/Name	id	download	# rows	# cols	nonzeros	type	sym	spd?
		Chen/pkustk01	847	MAT, MM, RB	22,044	22,044	979,380	binary symmetric	yes	no
		Chen/pkustk02	848	MAT, MM, RB	10,800	10,800	810,000	binary symmetric	yes	no
		Chen/pkustk03	849	MAT, MM, RB	63,336	63,336	3,130,416	binary symmetric	yes	no
		Chen/pkustk04	850	MAT, MM, RB	55,590	55,590	4,218,660	binary symmetric	yes	no
		Chen/pkustk05	851	MAT, MM, RB	37,164	37,164	2,205,144	binary symmetric	yes	no
		Chen/pkustk06	852	MAT, MM, RB	43,164	43,164	2,571,768	binary symmetric	yes	no
		Chen/pkustk07	853	MAT, MM, RB	16,860	16,860	2,418,804	binary symmetric	yes	no
		Chen/pkustk08	854	MAT, MM, RB	22,209	22,209	3,226,671	binary symmetric	yes	no
		Chen/pkustk09	855	MAT, MM, RB	33,960	33,960	1,583,640	binary symmetric	yes	no
		Chen/pkustk10	856	MAT, MM, RB	80,676	80,676	4,308,984	binary symmetric	yes	no
		Chen/pkustk11	857	MAT, MM, RB	87,804	87,804	5,217,912	binary symmetric	yes	no
		Chen/pkustk12	858	MAT, MM, RB	94,653	94,653	7,512,317	binary symmetric	yes	no
		Chen/pkustk13	859	MAT, MM, RB	94,893	94,893	6,616,827	binary symmetric	yes	no
		Chen/pkustk14	860	MAT, MM, RB	151,926	151,926	14,836,504	binary symmetric	yes	no

Maintained by Tim Davis, last updated 10-Jun-2015.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
See UFget to download directly into MATLAB.