Unstructured Data Item
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An Unstructured Data Item is a data item without a data structure (its semantic properties are not explicit).
- It can (typically) be a Human Processable Artifact.
- It can be a member of an Unstructured Data Item Set.
- a set of Audio Files.
- a set of Image Files.
- a set of Text Documents.
- See: Unstructured.
- (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Unstructured_data
- Unstructured data (or unstructured information) refers to (usually) computerized information that either does not have a data model or has one that is not easily usable by a computer program. The term distinguishes such information from data stored in fielded form in databases or annotated (semantically tagged) in documents.
- The term is imprecise: software that creates machine-processable structure exploits the linguistic, auditory, and visual structure that is inherent in all forms of human communication.  This inherent structure can be inferred from text, for instance, by examining word morphology, sentence syntax, and other small- and large-scale patterns. Examples of "unstructured data" may include audio, video, and unstructured text such as the body of an e-mail message, Web page, or word processor document.
- Unstructured Data. Data which is not structured (see definition for Structured Data, above), such as the free-text comments within MetaCyc. Those comments are not structured because the computer cannot automatically extract properties and relationships from the data.