Résumé. Dans cet article, nous proposons une nouvelle approche de pondérations des variables durant un processus d’apprentissage non supervisé. Cette méthode se base sur l’algorithme « batch » des cartes auto-organisatrices. L’estimation des coefficients de pondération se fait en parallèle avec la classification automatique. Ces pondérations sont locales et associées à chaque référent de la car...

Being visually impaired or a computer illiterate have always being a barrier for people to use computer to perform their tasks in an easy, efficient and quick way. However, mobile is not only a necessity of everyone today but is convenient to be operated by anyone and everyone. This paper discusses a system wherein the user will be able to type text on computer by providing a voice input throug...

Search by Object Model — finding an object inside a target image — is a desirable and yet difficult mechanism for querying multimedia data. An added difficulty is that objects can be photographed under different lighting conditions. While human vision has color constancy, an invariant processing, presumably, here we seek only covariant processing and look to recover such lighting change. Making...

Chi's are genetic elements that stimulate generalized recombination in their locale in phage lambda. All Chi's wherever located on lambda's chromosome, act asymmetrically in crosses blocked in DNA replication: (1) They stimulate exchange primarily to their left on the conventional lambda map, and (2) the stimulated exchange is frequently nonreciprocal, the recombinant carrying the Chi element b...

Using the parallel between the preframe and the suplattice approach to locale theory it is shown that the patch construction, as an action on topologies, is the same thing as the process of recovering a discrete poset from its algebraic dcpo (ideal completion).