Listar INIT_Articles por título
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On the suitability of resampling techniques for the class imbalance problem in credit scoring
Palgrave Macmillan (2013)In real-life credit scoring applications, the case in which the class of defaulters is under-represented in comparison with the class of non-defaulters is a very common situation, but it has still received little attention. ... -
On the trend detection of time-ordered intensity images of point processes on linear networks
Taylor & Francis (2023)Spatial point processes on linear networks are increasingly getting attention in different disciplines such as traffic accidents and street crime analysis. Dealing with a set of time-ordered point patterns on a linear ... -
On the use of data filtering techniques for credit risk prediction with instance-based models
Elsevier (2012)Many techniques have been proposed for credit risk prediction, from statistical models to artificial intelligence methods. However, very few research efforts have been devoted to deal with the presence of noise and outliers ... -
On the effectiveness of preprocessing methods when dealing with different levels of class imbalance
Elsevier (2012)The present paper investigates the influence of both the imbalance ratio and the classifier on the performance of several resampling strategies to deal with imbalanced data sets. The study focuses on evaluating how learning ... -
On wavelet-based energy densities for spatial point processes
Springer (2013-08)A spatial point process can be considered a random measure and therefore represented as a countable sum of Delta Dirac measures concentrated at some points of the process. Applying a two-dimensional continuous wavelet ... -
On-axis non-linear effects with programmable Dammann lenses under femtosecond illumination
Optical Society of America (2013)We demonstrate the utilization of Dammann lenses codified onto a spatial light modulator (SLM) for triggering non-linear effects. With continuous wave illumination Dammann lenses are binary phase optical elements that ... -
Online reconstruction-free single-pixel image classification
Elsevier (2019-04)In single-pixel imaging, a series of illumination patterns are projected onto an object and the reflected or transmitted light from the object is integrated by a photodetector (the single-pixel detector). Then, from the ... -
Open City Toolkit: el rol de las ciencias geoespaciales para la realización de ciudades abiertas y participativas
eGeoMapping S.L. (2017)En la literatura se distinguen dos enfoques diferentes para la transformación de las actuales ciudades en ciudades inteligentes: (a) ofrecer sistemas más eficientes y autónomos a través del uso de la tecnología, sensores, ... -
Open Source Based Deployment of Environmental Data into Geospatial Information Infrastructures
IGI Global (2012)Today, scientists use local and closed geospatial solutions to run their models and store their results. This may limit their ability to share their models, and results with other interested colleagues. This scenario ... -
Opening up Smart Cities: Citizen-Centric Challenges and Opportunities from GIScience
MDPI (2016-02)The holy grail of smart cities is an integrated, sustainable approach to improve the efficiency of the city’s operations and the quality of life of citizens. At the heart of this vision is the citizen, who is the primary ... -
Optical characterisation and photothermal conversion efficiency of a water-based carbon nanofluid for direct solar absorption applications.
Elsevier (2020-12-01)Carbon nanoparticles are very useful in solar thermal applications as they absorb much of the solar spectrum and can be inexpensive. Water-based carbon nanofluids with two different concentrations (3 and 33 mg l−1) were ... -
Optical frequency combs generated by acousto-optic frequency-shifting loops
IEEE (2019-12-01)A recirculating loop that includes an acousto-optic frequency shifter (AOFS) constitutes a versatile procedure to generate an optical frequency comb (OFC) from a continuous wave (cw) laser. This scheme, implementable with ... -
Optimal Multicasting in Millimeter Wave 5G NR with Multi-beam Directional Antennas
Institute of Electrical and Electronics Engineers (2021-12)The support of multicast communications in the fifth-generation (5G) New Radio (NR) system poses unique challenges to system designers. Particularly, the highly directional antennas do not allow to serve all the user ... -
Optimal Placement of Social Digital Twins in Edge IoT Networks
MDPI (2020)In next-generation Internet of Things (IoT) deployments, every object such as a wearable device, a smartphone, a vehicle, and even a sensor or an actuator will be provided with a digital counterpart (twin) with the aim ... -
Optimization of acousto-optic optical frequency combs
Optical Society of America (2019)Acousto-optic optical frequency combs can easily produce several hundreds of mutually coherent lines from a single laser, by successive frequency shifts in a loop containing an acousto-optic frequency shifter. They combine ... -
Overcoming the barrier of nanoparticle production by femtosecond laser ablation in liquids using simultaneous spatial and temporal focusing
Optical Society of America (2019)There exists an increasing demand of industrial-scale production of high-purity ligand-free nanoparticles due to the continuous development of biomedicine, catalysis, and energy applications. In this contribution, a ... -
Parabolicity criteria and characterization results for submanifoldsof bounded mean curvature in model manifolds with weights
Elsevier (2020)Let P be a submanifold properly immersed in a rotationally symmetric manifold having a pole and endowed with a weight e h. The aim of this paper is twofold. First, by assuming certain control on the h-mean curvature of ... -
Parabolicity, Brownian Exit Time and Properness of Solitons of the Direct and Inverse Mean Curvature Flow
(2019-10-05)We study some potential theoretic properties of homothetic solitons n of the MCF and the IMCF. Using the analysis of the extrinsic distance function defined on these submanifolds in Rn+m, we observe similarities and ... -
Parallel laser micromachining based on diffractive optical elements with dispersion compensated femtosecond pulses
Optical Society of America (2013)We experimentally demonstrate multi-beam high spatial resolution laser micromachining with femtosecond pulses. The effects of chromatic aberrations as well as pulse stretching on the material processed due to diffraction ... -
Parametric CAD modeling: An analysis of strategies for design reusability
Elsevier (2016-05)CAD model quality in parametric design scenarios largely determines the level of flexibility and adaptability of a 3D model (how easy it is to alter the geometry) as well as its reusability (the ability to use existing ...