Search results for "Connaissance"
showing 10 items of 179 documents
Selection of optimal narrowband multispectral images for face recognition
2015
Face recognition systems based on ’conventional’ images have reached a significant level of maturity with some practical successes. However, their performance may degrade under poor and/or changing illumination. Multispectral imagery represents a viable alternative to conventional imaging in the search for a robust and practical identification system. Multi- spectral imaging (MI) can be defined as a ’collection of several monochrome images of the same scene, each of them taken with additional receptors sensitive to other frequencies of the visible light or to frequencies beyond the visible light like the infrared region of electro- magnetic continuum. Each image is referred to as a band or …
Contribution à l’apprentissage de représentation de données à base de graphes avec application à la catégorisation d’images
2020
Graph-based Manifold Learning algorithms are regarded as a powerful technique for feature extraction and dimensionality reduction in Pattern Recogniton, Computer Vision and Machine Learning fields. These algorithms utilize sample information contained in the item-item similarity and weighted matrix to reveal the intrinstic geometric structure of manifold. It exhibits the low dimensional structure in the high dimensional data. This motivates me to develop Graph-based Manifold Learning techniques on Pattern Recognition, specially, application to image categorization. The experimental datasets of thesis correspond to several categories of public image datasets such as face datasets, indoor and…
Distinguishing between two crus : as easy as picking the right side ? : Effect of expertise on conceptual and perceptual representations of Beaujolai…
2017
Expertise was studied in cognitive psychology in order to understand the psychological mechanisms and the abilities involved in various areas of expertise. In the wine field, the few studies conducted on expertise suggest that the knowledge representation of experts is organized around “prototypes” derived from wines of different colours or grape varieties. The general purpose of this thesis was to address 1) theoretical questions about knowledge representation of wines among experts and novices, and 2) wine industry questions about Beaujolais wine perceptions. To this end, the effect of expertise on knowledge representations of wines was evaluated by comparing the performance of three diff…
Distinguishing between two crus : as easy as picking the right side ? : Effect of expertise on conceptual and perceptual representations of Beaujolai…
2017
L’expertise a été étudiée en psychologie cognitive afin de comprendre les mécanismes psychologiques et les compétences intervenant dans différents domaines d’expertise. Dans le domaine du vin, les quelques études menées suggèrent que les experts organiseraient leurs connaissances autour de « prototypes » de couleur ou de cépage. L’objectif général de cette thèse visait à répondre aux questionnements théoriques concernant les représentations des vins d’experts et de novices, ainsi qu’aux questionnements de la filière concernant les perceptions des vins du Beaujolais. Pour cela, l’effet de l’expertise sur les représentations des vins a été évalué en comparant les performances de trois panels …
From quantitative spatial operators to qualitative spatial relationships : a new approach applied to the detection and the semantic qualification of …
2012
This work presents the 3D Spatial Qualification tool (3DSQ) which was created tocompute spatial data stored in OWL-DL ontology. By using the adjustment principle ofan existing ontology, it is then possible to add 3D data to existing objects and computetheir spatial relationships from their 3D models. The 3DSQ Platform makes an attempt toensure the interaction between heterogeneous environments. Actually, such a semanticplatform connects an adjusted OWL ontology structure, a 3D quantification engine, avisualization engine and a set of geometry via knowledge processing technologymaterialized via SWRL, SQWRL rules and SPARQL queries within its extended Built-Ins. The created Spatial Built-Ins …
Use the artificial Intelligent in order to Define Skills in Higher Education
2012
In order to increase the level of learning and the rate of success of students the educational policy tries to find a way to increase simultaneously the skills and the knowledge of students especially in higher education. Many approaches have aimed to find the solutions. To reach this goal normally the combination of the various sciences can be more effective than one branch. Then we interested to know how the other science can help us to be close to this goal. The artificial intelligence (AI) is a branch of science that has a very wide domain of using. It can help us in various sciences like electronic, animation, medicine, banking, industries, exploitation, robotic, security and even spea…
How Artificial Intelligence Can link With Human Sciences
2013
International audience; Enhancing students' level of learning and ensuring academic success are the final goals of educational policy. To reach these goals, such policy seeks a way to simultaneously increase the skills and knowledge of students. We were interested to explore how the other sciences can help us draw closer to this goal. We therefore aim to demonstrate in this article an approach to help students at university find solutions to their learning problems. In an attempt to reach this goal, we suggest that other sciences can help us to the extent that the combination of the various sciences can be more effective than a single branch. Artificial intelligence (AI) is a branch of scie…
Knowledge engineering and semantic formalism of symbolic relations. From medieval network to web 3.0
2020
A search has always been at the center of human concerns, the one of conditions and means to represent, to control well, and to communicate effectively with his environment. While technological advances and electronic gadgets such as smartphones, the Web, and online social networks currently allow addressing this concern, it has not always been the case. Our works in this thesis treat medieval documents considered as a medium of communication and as a model of the social network in the Middle Ages. These documents are called medieval illuminations. They were luxurious paintings used in that time to represent the environment and ideal world for elites such as prince, duke, etc. Those paintin…
La collaboration avec la recherche universitaire vue de l’entreprise. Quelques résultats d’enquêtes dans les secteurs des technologies optoélectroniq…
2011
Analysant les caractéristiques de la demande de connaissances externes des entreprises en fonction de leurs régimes d’innovation, l’article s’intéresse plus particulièrement au rôle donné à la recherche universitaire dans les stratégies d’innovation des entreprises. Les résultats tirés d'enquêtes auprès d’entreprises britanniques et françaises, développant des composants optoélectroniques, mettent en évidence l’existence de deux catégories de recherche : la R-D sur financement propre qui est liée aux objectifs à court terme, et la R-D à moyen et long terme qui dépend du financement externe. La participation de la recherche universitaire à la recherche à court terme de l’entreprise prend la …
El reto del conocimiento en la practica del Trabajo Social
2005
En el presente artículo se pretende subrayar la importancia de que desde el Trabajo Social y la Educación Social se profundice en el conocimiento y la utilización de las Tecnologías de la Información y la Comunicación (TIC) como recurso y requisito para la intervención socioeducativa. Unas tecnologías que cada vez ostentan un mayor protagonismo en nuestra sociedad y ante las que, además, es preciso constituir una adecuada respuesta desde las entidades que habrán de asumir, tarde o temprano, la responsabilidad de atender las nuevas situaciones de exclusión a las que se podrán ver sometidos aquellos que no tengan posibilidad de acceder a ellas. En este sentido, se destaca la necesidad de que …