@Qian HU, janoy.qian@gmail.com @20110811 Readme file for data format. Files Structure: data/ # specified input folder cf.txt # piecewise linear cost function opt200/ # "opt200" instance set opt200-0.txt # instance "opt200-0" opt200-1.txt # instance "opt200-1" rand1024-2/ # instance set "rand1024-2" rand1024-2-3.txt # instance "rand1024-2-3" ... Format of piecewise linear cost function, e.g. cf_seg.txt: cf-001 # name of the cost function SEGMENT_TYPE # type of the file k # the piecewise linear cost function has k pieces x_0 y_0 # coordinates of the start point x_1 y_1 ... x_k y_k # coordinates of the last point ----------------------------------------- #e.g. cf-001 SEGMENT_TYPE 3 0 5.0 10 5.0 70 17.0 150 57.0 Format of instance file: # filename: xxx.txt instance_id instance_set # id of the instance ; name of the instance set |B| optimal_Cost # number of bins used in an optimal solution, "-1" for "rand" instances ; cost in an optimal solution, "-1" for "rand" instances W V # max weight and volume for each bin provided N T # the total number of items ; the total number of types w_1 v_1 d_1 # info of the first type of item, w_1 is its weight, v_1 for volume, d_1 is the total number of this item type w_2 v_2 d_2 .... w_T v_T d_T # info of the last item type # (notice that, N = d_1 + d_2 +... d_T) ---------------------- # e.g. rand256-3-1 rand256-3 -1 -1 150 150 256 8 58 69 32 48 69 32 22 31 32 65 64 32 19 35 32 34 22 32 4 30 32 6 8 32