Qinghua Wu and Jin-Kao Hao. An Effective Heuristic Algorithm for Sum Coloring of GraphsComputers & Operations Research 39(7): 1593-1600, 2012. Elsevier

Best sum coloring results reported in Tables 1 and 2 of the above paper on 52 DIMACS and COLOR02 benchmark graphs obtained by the EXSCOL algorithm. 

No. Instances Sum K Coloring Results
01 DSJC125.1 326 7 DSJC125.1
02 DSJC125.5 1017 20 DSJC125.5
03 DSJC125.9 2512 44 DSJC125.9
04 DSJC250.1 985 10 DSJC250.1
05 DSJC250.5 3246 31 DSJC250.5
06 DSJC250.9 8286 75 DSJC250.9
07 DSJC500.1 2850 14 DSJC500.1
08 DSJC500.5 10910 51 DSJC500.5
09 DSJC500.9 29912 132 DSJC500.9
10 DSJC1000.1 9003 22 DSJC1000.1
11 DSJC1000.5 37598 87 DSJC1000.5
12 DSJC1000.9 103464 231 DSJC1000.9
13 flat300_20_0 3150 20 flat300_20_0
14 flat300_26_0 3966 26 flat300_26_0
15 flat300_28_0 4282 34 flat300_28_0
16 flat1000_50_0 25500 50 flat1000_50_0
17 flat1000_60_0 30100 60 flat1000_60_0
18 flat1000_76_0 37167 86 flat1000_76_0
19 le450_15a 2632 18 le450_15a
20 le450_15b 2642 19 le450_15b
21 le450_15c 3866 24 le450_15c
22 le450_15d 3921 26 le450_15d
23 le450_25a 3153 26 le450_25a
24 le450_25b 3366 26 le450_25b
25 le450_25c 4515 31 le450_25c
26 le450_25d 4544 31 le450_25d
27 latin_sqr_10 42223 109 latin_sqr_10
28 C2000.5 132515 150 C2000.5
29 C4000.5 473234 266 C4000.5
30 myciel3 21 4 myciel3
31 myciel4 45 5 myciel4
32 myciel5 93 6 myciel5
33 myciel6 189 7 myciel6
34 myciel7 381 8 myciel7
35 anna 283 11 anna
36 david 237 11 david
37 huck 243 11 huck
38 jean 217 10 jean
39 queen5.5 75 5 queen5.5
40 queen6.6 150 10 queen6.6
41 queen7.7 196 7 queen7.7
42 queen8.8 291 9 queen8.8
43 games120 443 9 games120
44 miles250 328 9 miles250
45 miles500 709 20 miles500
46 wap05 13680 51 wap05
47 wap06 13778 48 wap06
48 wap07 28629 51 wap07
49 wap08 28896 51 wap08
50 qg.order30 13950 30 qg.order30
51 qg.order40 32800 40 qg.order40
52 qg.order60 110925 74 qg.order60

 

Notes:

1. These instances are available at http://www.info.univ-angers.fr/pub/porumbel/graphs/index.html and http://mat.gsia.cmu.edu/COLOR02 , or can be provided on request to wu@info.univ-angers.fr or hust2007wu@gmail.com.

2. The format of the solution file is as follows:

   c1 c2 ... cn

where ci (i=1,...,n) is the color of the ith vertex (n is the total number of vertices and ci={1,2,...,K}).