Recent Submissions

  • Robust combination of the Morris and Sobol methods in complex multidimensional models 

    Garcia D.; Arostegui I.; Prellezo R. (Environmental Modelling and Software, 2019)
    Conducting global sensitivity analysis using variance decomposition methods in complex simulation models with many input factors is usually unaffordable. An alternative is to first apply a screening method to reduce the ...
  • Data generation approaches for topic classification in multilingual spoken dialog systems 

    Montenegro C.; Santana R.; Lozano J.A. (ACM International Conference Proceeding Series, 2019)
    The conception of spoken-dialog systems (SDS) usually faces the problem of extending or adapting the system to multiple languages. This implies the creation of modules specically for the new languages, which is a time ...
  • Anatomy of the attraction basins: Breaking with the intuition 

    Hernando L.; Mendiburu A.; Lozano J.A. (Evolutionary Computation, 2019)
    olving combinatorial optimization problems efficiently requires the development of algorithms that consider the specific properties of the problems. In this sense, local search algorithms are designed over a neighborhood ...
  • Characterising the rankings produced by combinatorial optimisation problems and finding their intersections 

    Hernando L.; Mendiburu A.; Lozano J.A. (GECCO '19 Proceedings of the Genetic and Evolutionary Computation Conference, 2019)
    The aim of this paper is to introduce the concept of intersection between combinatorial optimisation problems. We take into account that most algorithms, in their machinery, do not consider the exact objective function ...
  • Approaching the Quadratic Assignment Problem with Kernels of Mallows Models under the Hamming Distance 

    Arza E.; Ceberio J.; Pérez A.; Irurozki E. (Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2019-07)
    The Quadratic Assignment Problem (QAP) is a specially challenging permutation-based np-hard combinatorial optimization problem, since instances of size $n>40$ are seldom solved using exact methods. In this sense, many ...
  • Sentiment analysis with genetically evolved Gaussian kernels 

    Roman I.; Santana R.; Mendiburu A.; Lozano J.A. (GECCO '19 Proceedings of the Genetic and Evolutionary Computation Conference, 2019)
    Sentiment analysis consists of evaluating opinions or statements based on text analysis. Among the methods used to estimate the degree to which a text expresses a certain sentiment are those based on Gaussian Processes. ...
  • Optimal multi-impulse space rendezvous considering limited impulse using a discretized Lambert problem combined with evolutionary algorithms 

    Shirazi A.; Ceberio J.; Lozano J.A. (8th European Conference for Aeronautics and Space Sciences, 2019-07-01)
    In this paper, a direct approach is presented to tackle the multi-impulse rendezvous problem considering the impulse limit. Particularly, the standard Lambert problem is extended toward several consequential orbit transfers ...
  • An evolutionary discretized Lambert approach for optimal long-range rendezvous considering impulse limit 

    Shirazi A.; Ceberio J.; Lozano J.A. (Aerospace Science and Technology, 2019-09-18)
    In this paper, an approach is presented for finding the optimal long-range space rendezvous in terms of fuel and time, considering limited impulse. In this approach , the Lambert problem is expanded towards a discretized ...
  • Analyzing rare event, anomaly, novelty and outlier detection terms under the supervised classification framework 

    Carreño A.; Inza I.; Lozano J.A. (Artificial Intelligence Review, 2019-09-01)
    In recent years, a variety of research areas have contributed to a set of related problems with rare event, anomaly, novelty and outlier detection terms as the main actors. These multiple research areas have created a ...
  • Crowd-Centric Counting via Unsupervised Learning 

    Morselli F.; Bartoletti S.; Mazuelas S.; Win M.; Conti A. (2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019-07-11)
    Counting targets (people or things) within a moni-tored area is an important task in emerging wireless applications,including those for smart environments, safety, and security.Conventional device-free radio-based ...
  • A mathematical analysis of edas with distance-based exponential models 

    Unanue I.; Merino M.; Lozano J.A. (GECCO '19 Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2019-07-01)
    Estimation of Distribution Algorithms have been successfully used for solving many combinatorial optimization problems. One type of problems in which Estimation of Distribution Algorithms have presented strong competitive ...
  • Belief Condensation Filtering For Rssi-Based State Estimation In Indoor Localization 

    Mehryary S.; Mazuelas S.; Malekzadehz P.; Spachos P.; Plataniotisy K.N.; Mohammadi A. (2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019)
    Recent advancements in signal processing and communication systems have resulted in evolution of an intriguing concept referred to as Internet of Things (IoT). By embracing the IoT evolution, there has been a surge of ...
  • Poisson excess relative risk models: New implementations and software 

    Higueras M.; Howes A. (SORT, 2019-03-01)
    Two new implementations for fitting Poisson excess relative risk methods are proposed for assumed simple models. This allows for estimation of the excess relative risk associated with a unique exposure, where the background ...
  • Anxiety and depressive symptoms are related to core symptoms, general helath outcome and medical comorbidities in eating disorders 

    Martin J.; Arostegui I.; Loroño A.; Padierna A.; Najera-Zuloaga J.; Quintana J.M. (European Eating Disorders Review, 2019-04)
    Objective: The goal of this study is to identify potential factors that have a significant effect on anxiety and depression of patients with eating disorders (ED) using the beta-binomial regression (BBR) approach on a broad ...
  • On the evaluation and selection of classifier learning algorithms with crowdsourced data 

    Urkullu A.; Perez A.; Calvo B. (Applied Soft Computing, 2019-02-16)
    In many current problems, the actual class of the instances, the ground truth, is unavail- able. Instead, with the intention of learning a model, the labels can be crowdsourced by harvesting them from different annotators. ...
  • COPD classification models and mortality prediction capacity 

    Aramburu A.; Arostegui I.; Moraza J.; Barrio I.; Aburto M.; García-Loizaga A.; Uranga A.; Zabala T.; Quintana JM.; Esteban C. (International Journal of COPD, 2019)
    Our aim was to assess the impact of comorbidities on existing COPD prognosis scores. Patients and methods: A total of 543 patients with COPD (FEV1 < 80% and FEV1/ FVC <70%) were included between January 2003 and January ...
  • Predictors of one and two years’ mortality in patients with colon cancer: a prospective cohort study 

    Quintana JM.; González N.; Lazaro S.; Bare M.; Fernandez-de-Larrea N.; Redondo M.; Briones E.; Escobar A.; Sarasqueta C.; García-Gutierrez S.; Antón-Ladislao A.; Arostegui I. (Plos One, 2018)
    Tools to aid in the prognosis assessment of colon cancer patients in terms of risk of mortality are needed. Goals of this study are to develop and validate clinical prediction rules for 1-and 2-year mortality in these ...
  • K-means for massive data 

    Capo M. (2019-04-30)
    The $K$-means algorithm is undoubtedly one of the most popular clustering analysis techniques, due to its easiness in the implementation, straightforward parallelizability and competitive computational complexity, when ...
  • Early classification of time series using multi-objective optimization techniques 

    Mori U.; Mendiburu A.; Miranda I.M.; Lozano J.A. (Information Sciences, 2019-04-23)
    In early classification of time series the objective is to build models which are able to make class-predictions for time series as accurately and as early as possible, when only a part of the series is available. It is ...
  • Mallows and generalized Mallows model for matchings 

    Irurozki E.; Calvo B.; Lozano J.A. (Bernoulli, 2019-02-25)
    The Mallows and Generalized Mallows Models are two of the most popular probability models for distribu- tions on permutations. In this paper, we consider both models under the Hamming distance. This models can be seen as ...

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