Del padre rey, al rey niño

Microsoft Word - Pilar Rey-del-Castillo.rtf

There are many situations where input feature vectors are incomplete and methods to tackle the problem have been studied for a long time. A commonly used procedure is to replace each missing value with an imputation. This paper presents a method to perform categorical missing data imputation from numerical and categorical variables. The imputations are based on Simpson’s fuzzy min-max neural ne...

Rey Hernández - Julián

Studies have shown that attractive people have higher earnings. In this paper, we test the hypothesis that physical attractiveness may be a proxy for unobserved productivity. We compare the impact of attractiveness on grades in college courses where instructors can directly observe the student’s appearance to courses where they do not. We confirm that appearance matters: attractive female stude...

Gambling Systems and Multiplication - Invariant MeasuresbyJe rey

Adjusted Probability Naive Bayesian InductionGeo rey

Naive Bayesian classiiers utilise a simple mathematical model for induction. While it is known that the assumptions on which this model is based are frequently violated, the predictive accuracy obtained in discriminate classiication tasks is surprisingly competitive in comparison to more complex induction techniques. Adjusted probability naive Bayesian induction adds a simple extension to the n...

Space - Alternating Generalized Expectation - Maximization AlgorithmJe rey

| The expectation-maximization (EM) method can facilitate maximizing likelihood functions that arise in statistical estimation problems. In the classical EM paradigm, one iteratively maximizes the conditional log-likelihood of a single unobservable complete data space, rather than maximizing the intractable likelihood function for the measured or incomplete data. EM algorithms update all parame...