Some experimental results on placement techniques
Maurice Hanan, Peter K. Wolff, et al.
DAC 1976
We reexamine the class of (0, ±1) matrices called submodular, which we introduced in (Ann. Discrete Math. 15 (1982) 189). Our key idea in this paper is to define, for each submodular matrix M, a corresponding digraph G whose nodes are the columns of M. Our principal results are as follows: (a) a graph-theoretic interpretation of the polyhedron P(M) = {x: x ≥ 0, Mx ≥ -1}, and (b) for a given G, the description of a submodular matrix contained in all submodular matrices representing G. © 2002 Elsevier Science B.V. All rights reserved.
Maurice Hanan, Peter K. Wolff, et al.
DAC 1976
Hans Becker, Frank Schmidt, et al.
Photomask and Next-Generation Lithography Mask Technology 2004
Rajiv Ramaswami, Kumar N. Sivarajan
IEEE/ACM Transactions on Networking
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ACM Transactions on Information Systems (TOIS)