Listar INIT_Articles por fecha de publicación
-
Programmable quasi-direct space-to-time pulse shaper with active wavefront correction
Optical Society of America (2012)We experimentally demonstrate an extremely compact and programmable pulse shaper composed of a single phase mask encoded into a spatial light modulator. Its principle of operation is similar to the previously theoretically ... -
Hyperspectral remote sensing of foliar nitrogen content
National Academy of Sciences (2012)A strong positive correlation between vegetation canopy bidirectional reflectance factor (BRF) in the near infrared (NIR) spectral region and foliar mass-based nitrogen concentration (%N) has been reported in some temperate ... -
Single-pixel polarimetric imaging
Optical Society of America (2012)We present an optical system that performs Stokes polarimetric imaging with a single-pixel detector. This fact is possible by applying the theory of compressive sampling to the data acquired by a commercial polarimeter ...
-
Comparison of exit moment spectra for extrinsic metric balls
Springer Science+Business Media B.V. (2012)We prove explicit upper and lower bounds for the L1-moment spectra for the Brownian motion exit time from extrinsic metric balls of submanifolds Pm in ambient Riemannian spaces Nn. We assume that P and N both have ...
-
Developing a Forest Data Portal to Support Multi-Scale Decision Making
Institute of Electrical and Electronics Engineers (2012)Forests play a pivotal role in timber production, maintenance and development of biodiversity and in carbon sequestration and storage in the context of the Kyoto Protocol. Policy makers and forest experts therefore require ...
-
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 ...
-
Synthesis of fractal light pulses by quasi-direct space-to-time pulse shaping
Optical Society of America (2012)We demonstrated a simple diffractive method to map the self-similar structure shown in squared radial coordinate of any set of circularly symmetric fractal plates into self-similar light pulses in the corresponding temporal ...
-
Space.time interpolation of daily air temperatures
UCLA Department of Statistics (2012)We propose a model to describe the mean function as well as the spatio-temporal covariance structure of 15 years of both maximum and minimum daily temperature data from 190 stations throughout the region of Catalonia ...
-
Spatio-temporal evolution modeling of environmental and natural phenomena
UCLA Department of Statistics (2012)This short paper introduces the special issue containing six selected papers coming from the International Workshop on Spatio-temporal Modeling (METMA V) held in San- tiago de Compostela (Spain), from 30 June to 2 July 2010.
-
Exploring the behaviour of base classifiers in credit scoring ensembles
Elsevier (2012)Many techniques have been proposed for credit risk assessment, from statistical models to artificial intelligence methods. During the last few years, different approaches to classifier ensembles have successfully been ...
-
Surrounding neighborhood-based SMOTE for learning from imbalanced data sets
Springer (2012)Many traditional approaches to pattern classifi- cation assume that the problem classes share similar prior probabilities. However, in many real-life applications, this assumption is grossly violated. Often, the ratios ...
-
Interoperable Search Mechanisms for Web 2.0 Resources
European Commission (2012)We are currently witnessing ordinary citizens willing to share geospatial information using friendly and easy-to use tools provided by Web 2.0 platforms. These platforms act as social networks describing events with ...
-
Evaluación del uso y necesidades de información geoespacial de los profesionales en prevención y extinción de incendios forestales
Geofocus (2012)La información geoespacial necesaria para la gestión de los incendios forestales es muy amplia y diversa. Cada profesional que interviene en un incendio forestal actúa en diferentes fases (prevención, extinción), contexto ...
-
Comparison results for capacity
Indiana University Mathematics Journal (2012)We obtain in this paper bounds for the capacity of a compact set $K$. If $K$ is contained in an $(n+1)$-dimensional Cartan-Hadamard manifold, has smooth boundary, and the principal curvatures of $\partial K$ are larger ...
-
Estimating Space and Space-Time Covariance Functions for Large Data Sets: A Weighted Composite Likelihood Approach
American Statistical Association (2012)In the last years there has been a growing interest in the construction space-time covariance functions. However, effective estimation methods for these models are some- how unexplored. In this paper we propose a composite ...
-
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 ...
-
Multibeam second-harmonic generation by spatiotemporal shaping of femtosecond pulses
Optical Society of America (2012)
-
Spatial threshold exceedance analysis through marked point processes
Wiley- Blackwell (2012)Indicators of recurrence, persistence and, in general, distribution patterns of extremal events defined by random field threshold exceedances provide relevant information on critical phenomena for risk assessment. Such ...
-
A virtual globe tool for searching and visualizing geo-referenced media resources in social networks
Springer (2012)The current collaborative context and resource sharing that drives Web 2.0 is gaining importance within academia and industry, which is stimulating the development of new techniques for content retrieval, sharing and ...
-
Filter-Type Variable Selection Based on Information Measures for Regression Tasks
MDPI AG (2012)This paper presents a supervised variable selection method applied to regression problems. This method selects the variables applying a hierarchical clustering strategy based on information measures. The proposed technique ...
