semantic gap


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semantic gap

[si′man·tik ′gap]
(computer science)
The difference between a data or language structure and the objects that it models.

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.

semantic gap

The difference between a data or language structure and the real world. For example, in order processing, a company can be both customer and supplier. Since there is no way to model this in a hierarchical database, the semantic gap is said to be large. A network-structured database could handle this condition, resulting in a smaller semantic gap. See semantics.
References in periodicals archive ?
VDSM can overcome the semantic gap challenge and improve the execution efficiency of intrusion detection.
The rest of this paper is organized as follows: Section 2 presents related work in VMI-based intrusion detection and semantic gap reparation.
The image retrieval results obtained by using proposed image representation for the semantic class "Buses" and "Beach" are shown in Figures 8 and 9, respectively, in response to the query images that shows reduction of semantic gap in terms of classifier decision value (score).
Caption: Figure 8: Image retrieval result shows reduction of semantic gap for the semantic class "Buses.
In addition, semantic distances in topic maps can help to reduce the semantic gap by making a clear view of the semantic structures between topics [9].
Hence, to enable alleviate the semantic gap and the perception subjectivity problems, our method for automatically determining the perceptual importance of regions is constructed based on fuzzy inference neural networks(FINNs).
They have developed the idea of a multimedia thesaurus in their MAVIS 2 multimedia information system as an attempt to bridge the semantic gap.
Organisational semantics, software issues and semantic gaps are the three aspects of the semantic barrier.
However, I also suggest that these semantic gaps do not--or, at any rate, need not--engender truth-value gaps in the sentences to which they correspond.
Several approaches, including database translation, distributed systems, federations, multi-base language, mediation and ontology, have been proposed to bridge the semantic gaps among heterogeneous information systems.

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