By Damien Nouvel, Maud Ehrmann, Sophie Rosset
One of the demanding situations as a result of the electronic revolution of the new many years is the mechanism during which details carried through texts will be extracted for you to entry its contents.
The processing of named entities continues to be a truly lively sector of analysis, which performs a vital function in typical language processing applied sciences and their functions. Named entity attractiveness, a device utilized in info extraction initiatives, makes a speciality of spotting small items of knowledge with the intention to extract info on a bigger scale.
The authors use written textual content and examples in French and English to provide the required parts for the readers to familiarize themselves with the most strategies relating to named entities and to find the issues linked to them, in addition to the tools to be had in perform for fixing those issues.
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Additional resources for Named entities for computational linguistics
Example text
In this context, the concept of named entity acts as a unifying “container” for all lexical units close to, and sometimes far from, the proper name category. In other formulas, it is not a direct opposition to proper names but rather semantic concepts which are put forward. Consider the following words: 20 Named Entities for Computational Linguistics ESTER1: “Although there is no standard definition, we can say that NEs are particular types of lexical units which refer to an entity of the real world in certain specific domains, including human, social, political, economical or geographical, and have a name (typically a proper name or an acronym)” [MEU 04].
Proper names can be modified from a syntactic point of view, including the use of determiners and plurals, or from a reference point of view, losing their own unique and direct designation role. Named Entities, Referential Units 31 but do not connote anything13. It is impossible to assign a lexical meaning in the form of application conditions or descriptive traits specifying their conditions of use or, returning to our example, the proper name Jacques Chirac does not code for any properties of the bearer.
From this point of view, denotative propositions, and thus definite descriptions, become variables linked to propositional functions; therefore, they cannot denote by themselves but only contextually, within a proposition. With regard to definite descriptions, Russell proposes to reduce their analysis to the following criteria: 1) a condition on existence (linked to the description); 2) a condition on uniqueness (linked to the description); 3) a contextual qualification. As soon as a constituent cannot be verified, the proposition cannot be true.