semantic gap
The difference between the complex operations performed by high-level language
constructs and the simple ones provided by computer instruction sets. It was in
an attempt to try to close this gap that computer architects designed
increasingly complex instruction set computers.
(1994-10-10)
Nearby terms:
self-reference « selvage « SEM « semantic gap
» semantic network » semantics » semaphore
semantic network
<data> A graph consisting of nodes that represent physical or conceptual
objects and arcs that describe the relationship between the nodes, resulting in
something like a data flow diagram. Semantic nets are an effective way to
represent data as they incorporate the inheritance mechanism that prevents
duplication of data. That is, the meaning of a concept comes from its
relationship to other concepts and the information is stored by interconnecting
nodes with labelled arcs.
(1999-01-07)
Nearby terms:
selvage « SEM « semantic gap « semantic network
» semantics » semaphore » semi
semantics
<theory> The meaning of a string in some language, as opposed to syntax
which describes how symbols may be combined independent of their meaning.
The semantics of a programming language is a function from programs to answers.
A program is a closed term and, in practical languages, an answer is a member of
the syntactic category of values. The two main kinds are denotational semantics
and operational semantics.
(1995-06-21)
Nearby terms:
SEM « semantic gap « semantic network « semantics
» semaphore » semi » Semi-Automatic Ground
Environment
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