Module DecisionSpace

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Class for using AND-(X)OR trees to define the space of possible actions that an agent has available

Classes

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DecisionSpace
Space of possible options that an agent may have Each option is assumed to be a dictionary-type object.

ORSpace
Space of possible options expressed as a disjunction of all possible values

XORSpace
Space of possible options expressed as XOR tree

AndSpace
Space of possible options expressed as AND tree

Functions

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parseSpace(element)
Extracts a DecisionSpace instance from an XML specification.

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DecisionSpace

extractSpace(spec)
Returns a DecisionSpace object from the given dictionary specification

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Variables

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_spacesByType = {None: DecisionSpace, 'XOR': XORSpace, 'AND': ...

EMPTY_NAMESPACE = None

EMPTY_PREFIX = None

StringTypes = (<type 'str'>, <type 'unicode'>)

XMLNS_NAMESPACE = 'http://www.w3.org/2000/xmlns/'

Function Details

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parseSpace(element)

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Extracts a DecisionSpace instance from an XML specification. In reality, this just identifies the correct DecisionSpace subclass and then invokes the appropriate parse method

Parameters:

element - XML element (i.e., <decisions ...>...)

Returns:

DecisionSpace

extractSpace(spec)

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Returns a DecisionSpace object from the given dictionary specification

Parameters:

spec - The dictionary should be structured as follows:
- type: either None, 'XOR', 'OR', or 'AND',
- base: a dictionary specification of a DecisionSpace object (optional)
- key: key argument used for constructor (defaults to None)
- values: values argument use for constructor (optional)

Returns: DecisionSpace

The DecisionSpace object represented by the spec

Variables Details

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_spacesByType

Value:

{None: DecisionSpace, 'XOR': XORSpace, 'AND': AndSpace, 'OR': ORSpace,
}