Unstructured data

This results in irregularities and ambiguities that make it difficult to understand using traditional programs as compared to data stored in fielded form in databases or annotated (semantically tagged) in documents.

[11] The term is imprecise for several reasons: Techniques such as data mining, natural language processing (NLP), and text analytics provide different methods to find patterns in, or otherwise interpret, this information.

[12] Algorithms can infer this inherent structure from text, for instance, by examining word morphology, sentence syntax, and other small- and large-scale patterns.

Unstructured information can then be enriched and tagged to address ambiguities and relevancy-based techniques then used to facilitate search and discovery.

It does not capture the meaning or function of tagged elements in ways that support automated processing of the information content of the page.

These workflows are generally designed to handle sets of thousands or even millions of documents, or far more than manual approaches to annotation may permit.

Several of these approaches are based upon the concept of online analytical processing, or OLAP, and may be supported by data models such as text cubes.

[17] Recent efforts to enforce structure upon biomedical documents include self-organizing map approaches for identifying topics among documents,[18] general-purpose unsupervised algorithms,[19] and an application of the CaseOLAP workflow[15] to determine associations between protein names and cardiovascular disease topics in the literature.

It does use the word "structured" as follows (without defining it); GDPR Case-law on what defines a "filing system"; "the specific criterion and the specific form in which the set of personal data collected by each of the members who engage in preaching is actually structured is irrelevant, so long as that set of data makes it possible for the data relating to a specific person who has been contacted to be easily retrieved, which is however for the referring court to ascertain in the light of all the circumstances of the case in the main proceedings.” (CJEU, Todistajat v. Tietosuojavaltuutettu, Jehovan, Paragraph 61).