Ant Colony Optimization

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Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
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Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
3
Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
4
Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
5
Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
6
Ant Colony Optimization
Constructive Meta-Heuristics
Edge Selection
Pheromone Deposit
7
Search Method Types

• Systematic (Enumeration)
• Constraint Programming
• Integer Programming / MIP
• Heuristic
• ACO
• GA / EC
• GRASP
• Tabu
• SA

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Degrees of Tightness
T1
loose
Stochastic Search (Meta Heuristics)
T2
tight
Systematic Search (Enumeration)
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Degrees of Tightness
T1
loose
Stochastic Search (Meta Heuristics)
T2
tight
Systematic Search (Enumeration)
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Constraint Programming

• Systematic search
• Domains FD, N, R,
• Explicit High-Level Modelling
• Search Space Reduction by Domain Reduction (in FD)

CP(FD) Tree Search Tree Pruning
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Constraint Programming

• Systematic search
• Domains FD, N, R,
• Explicit High-Level Modelling
• Search Space Reduction by Domain Reduction (in FD)

CP(FD) Tree Search Tree Pruning
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Constraint Programming

• Systematic search
• Domains FD, N, R,
• Explicit High-Level Modelling
• Search Space Reduction by Domain Reduction (in FD)

CP(FD) Tree Search Tree Pruning
13
Constraint Programming

• Systematic search
• Domains FD, N, R,
• Explicit High-Level Modelling
• Search Space Reduction by Domain Reduction (in FD)

CP(FD) Tree Search Tree Pruning
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Constraint Programming

• Systematic search
• Domains FD, N, R,
• Explicit High-Level Modelling
• Search Space Reduction by Domain Reduction (in FD)

CP(FD) Tree Search Tree Pruning
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CP - ACO Hybrid

• learning via reinforcement
• ACO
• CP
• feasible construction / search space pruning