How to Get More Custom Behaviour

Custom behaviour can be obtained by writing new Node, ArrivalNode, ExitNode, Individual, and/or Server classes, that inherit from the original ciw.Node, ciw.ArrivalNode, ciw.Individual and ciw.Server classes respectively, that introduce new beahviour into the system. The classes that can be overwitten are:

• Node: the main node class used to represent a service centre.

• ArrivalNode: the node class used to generate individuals and route them to a specific Node.

• ExitNode: the node class used to collect customers as they leave the system.

• Individual: the individual class used to represent the individual entities.

• Server: the class used to represent the servers that sit at a service centre.

These new classes can be used with the Simulation class by using the keyword arugments node_class, arrival_node_class, exit_node_class, individual_class, and server_class. These arguments take a class (not an instance of a class), to use throughout the whole simulation. The argument node_class can also take a list of classes, indicating which node class to use on each node of the network. This allows for different nodes to exhibit very different behaviours to one another.

Library of Examples

Here’s a library of examples of this functionality:

• State-dependent Arrivals
• Variable Number of Servers
• Server-dependent Services
• DES+SD Hybrid Simulation with Ciw