Ambiguïté

Résumé

vignette|: on peut y voir une tête de canard ou une tête de lapin. L'ambiguïté (orthographe traditionnelle) ou ambigüité (orthographe réformée de 1990) est le caractère d'une situation, d'une perception, d'un mot ou d'une phrase dont il existe deux interprétations entre lesquelles on ne peut décider. En sémantique, un signifiant renvoie à un signifié . L'ambiguïté survient lorsque le récepteur peut hésiter entre deux signifiés. Un mot qui a plusieurs significations, une phrase qui a plusieurs analyses grammaticales possibles créent un doute que le contexte doit résoudre. On parle de désambiguïsation lexicale lorsque chaque mot est lié, dans un contexte donné, à une définition donnée unique : cet objectif est l'un de ceux de la cohérence du langage naturel. ; la redondance aide à lever certaines propositions ou termes ambigus. Les ambiguïtés, équivoques et quiproquos sont des procédés similaires, courants au théâtre, notamment comique. Une amphibologie est un énoncé ambigu. Gé

Source officielle

https://fr.wikipedia.org/wiki/Ambigu%C3%AFt%C3%A9

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Ecrire la couleur

Stéphanie Joho Monnerat

Digital color, by its ambiguous nature, which always oscillates between a writing and a sensation, is always shifting, elusive, intangible, and yet, well presents, through the increasing use of computers in every field. Since it seems impossible to solve none of its contradictions by the formula "either... or" — either matter or sign, either real or virtual, either permanent or transitory — digital color has to be apprehended through all of its paradoxes, prompting us to consider that it may have a double modality of existence, which can not be reduced to one of its parts.

EPFL2004

Chargement

In a growing number of applications, different complementary views of real-world objects are needed. This is particularly true in spatial modelling - where the designer can propose different geometries for a given spatial object - or, in temporal modelling -where different life cycles can be defined on an object depending on the adopted point of view. A solution to provide multiple representations on objects is to offer a model supporting multiple instantiation, i.e. allowing real world entities to be instantiated in several classes. At the same time, object-oriented languages and object-oriented modelling have become common in computer science (C++ and Java for the former and UML (Rum.,97) for the latter). Hence, oriented-object properties as inheritance, polymorphism and dynamic binding are commonly used and their expressiveness quite naturally exploited. However, classical object-oriented models and languages onlyallow an implicit form of multiple instantiation among an inheritance hierarchy, i.e. an instance of a class is also a member of all its super-classes. In this paper we propose a solution to integrate classical object oriented mechanisms into models handling multiple instantiation and illustrate it on the conceptual model MADS. To achieve this, the dynamic binding mechanism was revisited, through the concept of scope of an instance (awareness of other instances), in order to manage the ambiguities induced by multiple instantiation. Last, providing an operational solution, a set of operators to modify the point of view of an object (determining which of its class instances is considered) and its scope is defined.

2000

Chargement

The IEC 61346 standard establishes general principles for structuring the information of technical systems. This paper discusses the ideas shown in the Standard emphasizing the fact that some parts of it are ambiguous and can lead to different interpretations of the basic concepts. Consequently, we derive a concrete interpretation of the standard that tries to remove the ambiguities. By removing ambiguities the Standard can be used as the basis for developing an industrial Software platform. Automation applications built on the platform benefit from a consistent data model, which can be used to query the application and exchange data with other applications.

2004

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