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ISO 24610-2:2011

Language resource management -- Feature structures -- Part 2: Feature system declaration

Üldinfo
Kehtiv alates 26.09.2011
Tegevusala (ICS grupid)
01.140.20 Infoteadused
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
26.09.2011
Põhitekst
ISO 24610-2:2011 provides a format to represent, store or exchange feature structures in natural language applications, for both annotation and production of linguistic data. It is ultimately designed to provide a computer format to define a type hierarchy and to declare the constraints that bear on a set of feature specifications and operations on feature structures, thus offering means to check the conformance of each feature structure with regards to a reference specification. Feature structures are an essential part of many linguistic formalisms as well as an underlying mechanism for representing the information consumed or produced by and for language engineering applications. A feature system declaration (FSD) is an auxiliary file used in conjunction with a certain type of text that makes use of fs (that is, feature structure) elements. The FSD serves four purposes. 1) It provides an encoding by which types and their subtyping and inheritance relationships can be introduced and defined, thus laying the basis for constructing a feature system. 2) It provides a mechanism by which the encoder can list all of the feature names and feature values and give a prose description as to what each represents. 3) It provides a mechanism by which type constraints can be declared, against which typed feature structures are validated relative to a given theory stated in typed feature logic. These constraints may involve constraints on the range of a feature's value, constraints on which features are permitted within certain types of feature structures, or constraints that prevent the co-occurrence of certain feature-value pairs. The source of these constraints is normally the empirical domain being modelled. 4) It provides a mechanism by which the encoder can define the intended interpretation of underspecified feature structures. This involves defining default values (whether literal or computed) for missing features. The scheme described in ISO 24610-2:2011 may be used to document any feature system, but is primarily intended for use with the typed feature structure representation defined in ISO 24610-1. The feature structure representations of ISO 24610-1 specify data structures that are subject to the typing conventions and constraints specified using ISO 24610-2:2011. The feature structure representations of ISO 24610-1 are also used within some of the elements defined in ISO 24610-2:2011.
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ISO 24615-1:2014

Language resource management -- Syntactic annotation framework (SynAF) -- Part 1: Syntactic model
Uusim versioon Kehtiv alates 05.02.2014
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ISO/TS 24617-5:2014

Language resource management -- Semantic annotation framework (SemAF) -- Part 5: Discourse structure (SemAF-DS)
Uusim versioon Kehtiv alates 05.03.2014
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ISO 24610-1:2006

Language resource management -- Feature structures -- Part 1: Feature structure representation
Uusim versioon Kehtiv alates 10.04.2006
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ISO 24612:2012

Language resource management -- Linguistic annotation framework (LAF)
Uusim versioon Kehtiv alates 15.06.2012