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accumulates, the system acquires the analytical capacity of the concrete
problem, which can be used for analyzing themes of the concrete problem.
Finally, some abstract conceptual understandings are summarized. For
example, in astronomy, the fact that celestial bodies rotate around is a general
understanding of the relation among the celestial bodies. The binary relation
“rotate around” can be abstracted as a SMU. Through this vocabulary, we can
associate it with not only concrete knowledge, but also the concrete image.
Another point in choice tactics is the consideration to abstract those important
modes involved in knowledge as a SMU. These modes are not expressed in
characters, but a special kind of expression methods made up of some special
symbols.
5.4.2 Memory Network
The knowledge we remembered is not isolated, but is linked closely or
loosely into a unified system in terms of a certain factor. We use the notation
of memory network to summarize this aspect of knowledge (Shi, 1992). A
memory network is a network of SMUs constructed according to the relations
among the component SUMs. Every node in a memory network represents a
SMU, which can be described as the following structure:
SMU =
{
SMU_NAME slot
Constraint slots
Taxonomy slots
Causality slots
Similarity slots
Partonomy slots
Case slots
Theory slots
}
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