JTMS
Standalone implementation of justification-based truth maintenance systems.
- Type Params
- Value Params
- checkingContradictions
For external systems.
- contradictionHandler
External handler for detecting contradictions.
- debugging
Debugging flag.
- nodeString
Default formatter for TMS nodes.
- title
Name of this TMS, for output.
- Constructor
The
titleargument is required; others are optional.
Document{}
Pass all believed contradiction nodes to the contradictionHandler.
Pass all believed contradiction nodes to the contradictionHandler.
Create a new node in this JTMS.
Create a new node in this JTMS.
- Value Params
- assumptionP
True indicates that this node might be used as an assumption. But note that an assumption node must be enabled before a judgment can use the node as a premise. The default value is
false.- contradictionP
True indicates that this node denotes a contradiction. The default value is
false.- datum
The piece of data associated with the node.
Main gateway for debugging messages.
Main gateway for debugging messages.
- Value Params
- msg
This debugging message.
Print a verbose debugging output of this JTMS as text.
Print a verbose debugging output of this JTMS as text.
Return the list of the currently enabled assumptions.
Return the list of the currently enabled assumptions.
Search for support for nodes which were disbelieved after an assumption retraction.
Search for support for nodes which were disbelieved after an assumption retraction.
The original Lisp code returns the justification when short-circuiting from the inner loop. But this return value is never used; moreover there is no return value used from callers of this function. So in this type-checked translation, we return the unit value.
- Value Params
- outQueue
List of nodes which have lost support. The naming of the parameter as a queue in the Lisp code is odd: the list is only read; nothing is ever enqueued.
Increment the justifications counter and return its value.
Increment the justifications counter and return its value.
Add a rule for concluding belief in a node.
Add a rule for concluding belief in a node.
- Value Params
- antecedents
The premises required to trigger belief in the `consequence.
- consequence
Node concluded by ths justification.
- informant
Information value associated with this justification.
Print a verbose debugging output list of the contradictions in this JTMS.
Print a verbose debugging output list of the contradictions in this JTMS.
- Value Params
- nodes
The list of contradictions to be printed.
Propagate the retraction of an assumption by finding all other nodes which used that assumption in their justification.
Propagate the retraction of an assumption by finding all other nodes which used that assumption in their justification.
- Value Params
- node
The node which has been recently disbelieved.
- Returns
List of node which may now also no longer be believed.