opytimizer.optimizers.swarm.sos

Symbiotic Organisms Search.

class opytimizer.optimizers.swarm.sos.SOS(params: Optional[Dict[str, Any]] = None)

An SOS class, inherited from Optimizer.

This is the designed class to define SOS-related variables and methods.

References

M.-Y. Cheng and D. Prayogo. Symbiotic Organisms Search: A new metaheuristic optimization algorithm. Computers & Structures (2014).

__init__(params: Optional[Dict[str, Any]] = None) → None

Initialization method.

Parameters:params – Contains key-value parameters to the meta-heuristics.
_mutualism(agent_i: opytimizer.core.agent.Agent, agent_j: opytimizer.core.agent.Agent, best_agent: opytimizer.core.agent.Agent, function: opytimizer.core.function.Function) → None

Performs the mutualism operation.

Parameters:
  • agent_i – Selected i agent.
  • agent_j – Selected j agent.
  • best_agent – Global best agent.
  • function – A Function object that will be used as the objective function.
_commensalism(agent_i: opytimizer.core.agent.Agent, agent_j: opytimizer.core.agent.Agent, best_agent: opytimizer.core.agent.Agent, function: opytimizer.core.function.Function) → None

Performs the commensalism operation.

Parameters:
  • agent_i – Selected i agent.
  • agent_j – Selected j agent.
  • best_agent – Global best agent.
  • function – A Function object that will be used as the objective function.
_parasitism(agent_i: opytimizer.core.agent.Agent, agent_j: opytimizer.core.agent.Agent, function: opytimizer.core.function.Function) → None

Performs the parasitism operation.

Parameters:
  • agent_i – Selected i agent.
  • agent_j – Selected j agent.
  • function – A Function object that will be used as the objective function.
update(space: opytimizer.core.space.Space, function: opytimizer.core.function.Function) → None

Wraps Symbiotic Organisms Search over all agents and variables.

Parameters:
  • space – Space containing agents and update-related information.
  • function – A Function object that will be used as the objective function.