Crítica de la comparación constitucional “ad hoc”

Modèles de langage ad hoc pour la reconnaissance automatique de la parole. (Ad-hoc language models for automatic speech recognition)

The three pillars of an automatic speech recognition system are the lexicon, the language model and the acoustic model. The lexicon provides all the words that can be transcribed, associated with their pronunciation. The acoustic model provides an indication of how the phone units are pronounced, and the language model brings the knowledge of how words are linked. In modern automatic speech rec...

Comparación de Enfoques para Evaluar la Validación de Respuestas

The Validation of Answers has been seen recently as a classification problem able to introduce Machine Learning for improving Question Answering results. The unbalanced nature of collections has led to the use of measures based on precision and recall. However, Relative Operating Characteristic (ROC) analysis is preferred sometimes in similar classification tasks. In this article we compare bot...

Minimisation de la consommation d'énergie dans les réseaux ad hoc

An ad hoc network is a collection of wireless devices forming a temporary network independently of any administration or fixed infrastructure. The main benefits of this new generation of mobile networks are flexibility and their low cost. Wireless devices have maximum utility when they can be used “anywhere at anytime”. However, one of the greatest limitations to that goal is the finite power s...

Hacia la comparación precisa de productos a partir de fuentes de datos distintas en la Web

Resumen. Cuando un consumidor desea comprar un producto v́ıa comercio electrónico, es común que enfoque sus esfuerzos en localizar la tienda con el mejor precio y con las caracteŕısticas concretas de su interés. Desafortunadamente la mayoŕıa de las tiendas emplean un catálogo propio de productos y atributos lo que impide elaborar reportes automáticos de productos de proveedores diversos. En este...

Autour de la réservation de bande passante dans les réseaux ad hoc. (About Bandwidth Reservation in Ad hoc Networks)