Package nars.entity

Data entities that are independently stored

See:
Description

Class Summary

BudgetValue	A triple of priority (current), durability (decay), and quality (long-term average).
Concept	A concept contains information associated with a term, including directly and indirectly related tasks and beliefs.
Goal	A Goal is an event to be realized, and may conain query variables
Item	An item is an object that can be put into a Bag, to participate in the resource competation of the system.
Judgment	A Judgment is an piece of new knowledge to be absorbed.
Question	A Question is a sentence without a truth value, and may conain query variables
Sentence	A Sentence is an abstract class, mainly containing a Term, a TruthValue, and a Stamp.
ShortFloat	A float value in [0, 1], with 4 digits accuracy.
Stamp	Each Sentence has a get of serial numbers of a constant length attached.
Task	A task to be processed, consists of a Sentence and a BudgetValue
TaskLink	Reference to a Task.
TemporalValue	Temporal information, in terms of the internal clock of the system.
TermLink	A link between a compound term and a component term
TruthValue	Frequency and confidence.

Package nars.entity Description

Data entities that are independently stored

Package Specification

• ShortFloats: BudgetValue (priority/durability/quality) and TruthValue (frequency/confidence)
• Stamp: serial numbers associated to TruthVallue
• Sentence: a Term, a TruthValue, and a Stamp. A Sentence can be a Judgment, a Goal, or a Question.
• Task: a Sentence to be processed.
• TermLink: built in pair between a compound term and a component term.
• TaskLink: special TermLink refering to a Task, whose Term equals or contains the current Term.
• Concept: labeled by a Term, contains a TaskLink bag and a TermLink bag for indirect tasks/beliefs, as well as beliefs/questions/goals directly on the Term.
• Item: Concept, Task, or TermLink
• TemporalValue: A relative time used in Sentence (for tense), Conjunction (for order), and Implication/Equivalence (for time interval)

in NARS, each task is processed in two stages:

1. Direct processing by matching, in the concept corresponding to the content, in one step. It happens when the task is inserted into memory.
2. Indirect processing by reasoning, in related concepts and unlimited steps. It happens in each inference cycle.

The transmission from (1) to (2) corresponds to "decision making".

Inference between premises with no shared term can only happen among new events, as temporal induction/comparison.