Instance: sg3dl105000, Dataset: BMZ

Ising Spinglass instances generated by Samuel Burer, Renato D. C. Monteiro, and Yin Zhang (2002).
More precisely: 20 regular cubic lattices having randomly generated interaction magnitudes, ten with base length 10 (1000 nodes), and ten with base length 14 (2744 nodes). Like the problems considered by Hartmann (1997), the weights are from {-1, 0, 1} such that the total weight sum is zero. Notice that here, due to the format specifications, the zero-weight edges are not included.

Download links: .mc version, .bq version
Instance sg3dl105000
|V| 1000
|E| 3000
dim(Q) 1000
nz(Q>) 3000
nz(Diag(Q)) 680
OSV n/a
Eigenvalues (min, max) -8.47428, 7.96419
Known correspondences -

Instance Visualisation

A visualisation of the instance, created with OGDF (click to enlarge).

Edge Weight Plot

A plot showing the frequency of edge weights, for a high-level overview of the edge weight distributions (click to enlarge).

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