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The simplest type of referring expressions are pronoun such as he and it. The linguistics and natural language processing communities have developed various models for predicting anaphor referents, such as centering theory, [1] and ideally referring-expression generation would be based on such models. However most NLG systems use much simpler ...
Referring can take place in a number of ways. Typically, in the case of (1), the RE is likely to succeed in picking out the referent because the words in the expression and the way they are combined give a true, accurate, description of the referent, in such a way that the hearer of the expression can recognize the speaker's intention.
For example, in Bill said Alice would arrive soon, and she did, the words Alice and she refer to the same person. [1] Co-reference is often non-trivial to determine. For example, in Bill said he would come, the word he may or may not refer to Bill. Determining which expressions are coreferences is an important part of analyzing or understanding ...
The theory classifies nominals according to two features, [±anaphor] and [±pronominal], which are binary. The binding characteristics of a nominal are determined by the values of these features, either plus or minus. Thus, a nominal that is [-anaphor, -pronominal] is an R-expression (referring expression), such as a common noun or a proper name.
It disregards word order (and thus most of syntax or grammar) but captures multiplicity. The bag-of-words model is commonly used in methods of document classification where, for example, the (frequency of) occurrence of each word is used as a feature for training a classifier. [1] It has also been used for computer vision. [2]
An opaque context or referentially opaque context is a linguistic context in which it is not always possible to substitute "co-referential" expressions (expressions referring to the same object) without altering the truth of sentences. [1] The expressions involved are usually grammatically singular terms. So, substitution of co-referential ...
The extra categories may be termed fourth person, fifth person, etc. Such terms are not absolute but can refer, depending on context, to any of several phenomena. Some Algonquian languages and Salishan languages divide the category of third person into two parts: proximate for a more topical third person, and obviative for a less topical third ...
Verbal context influences the way an expression is understood; hence the norm of not citing people out of context. Since much contemporary linguistics takes texts, discourses, or conversations as the object of analysis, the modern study of verbal context takes place in terms of the analysis of discourse structures and their mutual relationships ...