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DELA: A Dynamic Online Ensemble Learning Algorithm

The present paper investigates the problem of prediction in the context of dynamically changing environment, where data arrive over time. A Dynamic online Ensemble Learning Algorithm (DELA) is introduced. The adaptivity concerns three levels: structural adaptivity, combination adaptivity and model adaptivity. In particular, the structure of the ensemble is sought to evolve in order to be able t...

An Achievement Test for Knowledge-Based Systems: QUEM

This paper describes QUEM, a method for assessing the skill level of a knowledge-based system based on the quality of the solutions it produces. QUEM is demonstrated by using it to assess the performance of a particular knowledge-based system, P. QUEM can be viewed as an achievement or job placement test given to know ledge-based systems to help system designers determine how the system should ...

QUEM: An Achievement Test for Knowledge-Based Systems

This paper describes the QUality and Experience Metric (QUEM), a method for estimating the skill level of a knowledgebased system based on the quality of the solutions it produces. It allows one to assess how many years of experience the system would be judged to have if it were a human by providing a quantitative measure of the system’s overall competence. QUEM can be viewed as a type of achie...

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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...