Excalibur - Partial

EXCALIBUR
Adaptive Constraint-Based Agents in Artificial Environments

[PARTIAL KNOWLEDGE]

[Unordered Domains] [Ordered Domains] [Probabilities]

[ Please note: The project has been discontinued as of May 31, 2005 and is superseded by the projects of the ii Labs. There won't be further updates to these pages. ]

Unordered Domains

(Related publications: [PUBLink] [PUBLink])

State resource domains in our agent model may not only be two-valued, like the Door with Open and Closed values. For example, there may be an additional Locked value. In a situation of incomplete knowledge, each value must have an associated knowledge level of

Unknown: The information as to whether the value corresponds to the state is not available.
Known: The information as to whether the value corresponds to the state will be available in the future.
Not: The domain value definitely does not correspond to the state.

The figure below shows an example of an agent going away and leaving a door open for which the agent has the only key.

Because of the XOR-relation of the domain values, some propagations can be made within a state resource. If only one domain value has a knowledge level of Unknown, then this value gets the knowledge level Known. If only one domain value is not Not, then this value must be the state resource's state.

[PARTIAL KNOWLEDGE]

[Unordered Domains] [Ordered Domains] [Probabilities]

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Last update:
May 20, 2001 by Alexander Nareyek