Learning ordered pooling weights in image classification

Spatial pooling is an important step in computer vision systems like Convolutional Neural Networks or the Bag-of-Words method. The spatial pooling purpose is to combine neighbouring descriptors to obtain a single descriptor for a given region (local or global). The resultant combined vector must be as discriminant as possible, in other words, must contain relevant information, while removing irrelevant and confusing details. Maximum and average are the most common aggregation functions used in the pooling step. To improve the aggregation of relevant information without degrading their discriminative power for image classification, we introduce a simple but effective scheme based on Ordered Weighted Average (OWA) aggregation operators. We present a method to learn the weights of the OWA aggregation operator in a Bag-of-Words framework and in Convolutional Neural Networks, and provide an extensive evaluation showing that OWA based pooling outperforms classical aggregation operators

Una Experiencia sobre la coordinación docente y los resultados de la asignatura transversal Informática en la Universidad Pública de Navarra

En este trabajo analizamos la experiencia de la asig-natura Informática en la Universidad Pública de Navarra (UPNa). Esta asignatura es obligatoria y común para los ocho grados en ingeniería que se imparten en la UPNa. Los alumnos de los diferentes grados pueden compartir grupo. En todos los grados, la asignatura está programada en el primer semestre del primer curso, aunque existe la posibilidad de cursarla también en el segundo semestre en caso de no haber superado la asignatura. Además, la asignatura se imparte en tres idiomas: castellano, euskera e inglés. Dada la envergadura de la asignatura, en este trabajo analizamos los mecanismos de coordinación que utilizamos para que, tanto la docencia como la evaluación de los diferentes grupos, sea lo más ecuánime posible. También estudiamos las estadísticas de los resultados obtenidos en los cinco cursos que se ha impartido la asignatura, centrándonos en las tasas de rendimiento, éxito y evaluación por grados y por idiomas, así como en las causas que pueden originar las diferencias encontradas.In this work we analyze the experience of the subject Introduction to Computer Science at the Public University of Navarra (UPNa). This subject is compulsory and common to the eight engineering degrees offered at the UPNa. Students from diferent degrees can share the same class group. In all the eight degrees the subject is programmed at the first semester of the first year, but students can also study it during the second semes-ter if they failed it in the first semester. Besides, the subject is taught in three different languages: Spanish, Basque and English. Due to the magnitude of the subject, in this work we analyze the coordination mechanisms we use to avoid biased teaching and evaluation methods. We also study the results obtained during the five years that the subject has been offered, focusing on performance, success and evaluation rates depending on the degree and the language used, as well as the reasons for the differences found

Interval Type-2 Fuzzy Sets are Generalization of Interval-Valued Fuzzy Sets: Toward a Wider View on Their Relationship

In this paper, we will present a wider view on the relationship between interval-valued fuzzy sets and interval type-2 fuzzy sets, where we will show that interval-valued fuzzy sets are a particular case of the interval type-2 fuzzy sets. For this reason, both concepts should be treated in a different way. In addition, the view presented in this paper will allow a more general perspective of interval type-2 fuzzy sets, which will allow representing concepts that could not be presented by interval-valued fuzzy sets

A KINEMATIC STUDY OF THE SPRINT EVENTS AT THE 1999 WORLD CHAMPIONSHIPS IN ATHLETICS IN SEVILLA

The purpose of this study was to analyse the performance of the best athletes of the 100m, 200m and 400m sprint events at the World Athletics Championships Seville'99. Selected biomechanical variables were measured and the data obtained were provided to coaches and athletes so that they could be used in their training programming. The subjects of this study were eight men and eight women on each final. Athletes were filmed passing markers placed each 10 and 50m in the track by using two dimensional photogrammetry techniques. The results allow us to analyse in detail the several sections of each race and carry out an exhaustive comparative analysis of the athlete's performance at his race

El Robot Moway, una herramienta para el aprendizaje basado en proyectos

En este trabajo se presenta la experiencia docente desarrollada en la asignatura ”Sistemas Inteligentes. Aplicaciones” mediante la metodología de aprendizaje basado en proyectos. Para el desarrollo del proyecto se ha utilizado el robot móvil Moway. Se describen las fases del proyecto, los resultados y las conclusiones obtenidas tras una experiencia de dos años.In this work is presented the teaching experience we have had in the subject ”Intelligent Systems. Applications” using the project-based learning methodology. The projects were developed using the Moway mobile robot. The different steps of the project, the results and the conclusions reached after a two-year experience are described