Component Lifecycle

CCA components (not nodes!) maintain a lifecycle, that is specific to the AMARSi learning domain.

The lifecycle maintains the component state and handles changing between those states. The basic lifecycle is:

_images/lifecycle.png

A component author can hook into the lifecycle by implementing the following process methods of the component states and the methods called when changing the state. All hooks are optional an can be left unimplemented.

Execution

Execution is the main state of a component. The hooks are:

  • onStartExecution() - called once when entering this state
  • onProcess() - called every time when the Processing Strategies triggers processing
  • onStopExecution() - called once when leaving this this state

Online Learning

Online Learning is for online learning of an adaptive component. The hooks are:

  • onStartLearnOnline() - called once when entering this state
  • onLearnOnlineBeforeProcess() - called every time when the Processing Strategies triggers processing. This method is called right before onProcess() in case needed for the online learning method. The main computation of the online learning step should go in onLearnOnlineBeforeProcess().
  • onProcess() - called every time when the Processing Strategies triggers processing
  • onLearnOnlineBeforeProcess() - called every time when the Processing Strategies triggers processing. This method is called right after onProcess(). The main computation of the online learning step should go here.
  • onStopLearnOnline() - called once when leaving this this state

Offline Learning

Offline Learning is for offline learning of an adaptive component. The hooks are:

  • onStartLearnOffline() - called once when entering this state
  • onLearnOffline() - called every time when the Processing Strategies triggers processing
  • onStopLearnOffline() - called once when leaving this this state

Recording

to come … (#448)

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