package operations_research.packing.vbp

string name = 1
Optional name. This is only used for display/debugging purposes.
repeated int64 resource_usage = 2
Resource usages for this item. All usages must be non-negative. Should be the same size as resource_capacity in the VectorBinPackingProblem.
int32 num_copies = 3
Number of identical copies of this item that must be packed into some bin.
int32 num_optional_copies = 5
The number of extra copies which may be skipped for a penalty. Currently only supported by the ArcFlow solver (arc_flow_solver.h), other solvers ignore this field.
int32 max_number_of_copies_per_bin = 4
An optional upper bound on how many copies of the same item are allowed in a single bin, regardless of resource utilization. A value of 0 is interpreted as no limit.
double penalty_per_missing_copy = 6
Minimize the total cost of bins plus this penalty for each optional copy not placed in any bin. Currently only supported by the ArcFlow solver (arc_flow_solver.h), other solvers ignore this field.

Describe one filled bin in the solution.

repeated int32 item_indices = 1
Which items are in this bin. They are supposed to be unique.
repeated int32 item_copies = 2
How many of each items are in this bins.

string name = 1
Optional name.
repeated int64 resource_capacity = 2
Max capacity of each resource. All bins have the same resource capacities.
repeated string resource_name = 3
Resources names. This can either be left empty or must be of the same size as resource_capacity.
repeated Item item = 4
The list of items which are to be assigned to bins.
int32 max_bins = 5
The maximum number of bins available. A value of 0 is interpreted as no limit. Nonzero values may be used to encode feasibility problems.
optional double cost_per_bin = 6
If specified, tries to maximize the value of packed items minus the cost per bin used. A missing value is treated as 1. Currently only supported by the ArcFlow solver (ortools/packing/arc_flow_solver.h), other solvers ignore this field.

string solver_info = 1
Optional info from the solver.
repeated VectorBinPackingOneBinInSolution bins = 2
Filled bins.
VectorBinPackingSolveStatus status = 3
Solve status.
double objective_value = 4
Objective value. The total cost of bins used plus the penalty for any skipped items.
double solve_time_in_seconds = 5
Solve time in seconds.
double arc_flow_time_in_seconds = 6
Time to create the Arc-Flow graph.

Solve status

message Item