Table 5 Summary of experimental parameters.
From: Research on efficient relief logistics planning under massive natural disasters
Category | Parameter | Vehicle routing algorithm | Facility planning algorithm | ||
|---|---|---|---|---|---|
Target District | No. of facilities | 20 | Determined in this algorithm | ||
Degree of Node (in road network) | [2, 5] | ||||
Road network among nodes | Randomly generated based on degree of node and determined total nodes | ||||
SAD | No. of nodes | [1, 4] | |||
No. of candidate nodes for facility | 1 | ||||
No. of facilities | 20 | Determined in this algorithm | |||
Node | Population | Small:\(\left[\text{217,836}/TN,\text{500,435}/TN\right]\) Medium:\(\left[\text{500,436}/TN,\text{783,035}/TN\right]\) Large:\(\left[\text{783,036}/TN,\text{1,062,636}/TN\right]\)(where\(TN=\sum(No.\;of\;Nodes)\;for\;\forall\;\;SADs\)) | |||
Demand | Demand generation cycle | Every 30 min | 3 Days | ||
Amount of a demand | Daily Necessity and Grocery: Equal to the number of evacuees increased. Medicine: 10%, 20%, and 30% of Grocery demands (These values are denoted as MDP: Medicine Demand Percentage) | Aggregated value for 3 days | |||
Deadline of demand (min) | Daily Necessity and Grocery: Medicine: Evacuation: None | ||||
Space requirement for evacuees | Not considered | Basically equal to the amount of Grocery at every 30 min and aggregated for 3 days | |||
Vehicle | Speed | \(40\;\text{km}/\text{h}\) | |||
Capacity | \(400\;\text{units}\) | ||||
Loading/unloading time | \(10\;\text{seconds}\)/Unit | ||||
Size of fleet | 60 | Determined in this algorithm | |||
Cost | - | 10,000,000 KRW | |||
Facility | Fixed cost | - | [10,000,000, 40,000,000] KRW | ||
Variable cost | Fixed facility | - | Necessity demand: [1,000,000, 3,000,000] KRW per 200 unit Medicine demand: [500,000, 1,500,000] KRW per 50 unit Evacuation demand: [1,000,000, 2,000,000] KRW per 5 evacuees | ||
Temporary facility | - | Necessity demand: [1,000,000, 3,000,000] KRW per 200 unit Medicine demand: [500,000, 1,500,000] KRW per 50 unit Evacuation demand: [1,000,000, 2,000,000] KRW per 5 evacuees | |||
Policy | Budget limit | High: 5,000 M KRW Low: 3,000 M KRW | |||
PRL | 0.7, 0.5, 0.3 | ||||
Allocation ratio | 7:3 (Fixed: Temporary) | ||||
No. of experimental problem set | For DVRA:54 problems (3 types of number of residents × 3 types of MDP × 3 types of disaster × 2 levels of magnitude) For ELS: 324 problems (2 levels of budget limit × 3 levels of reliability limit × 54(same with DVRA) ) | ||||
Simulation run length for each experiment | 3 days – vehicle routes are planned in every 30 min | ||||
