Listar LSI_Articles por fecha de publicación
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Log-polar mapping template design: From task-level requirements to geometry parameters
Elsevier (2008)The best parameters defining the geometry of a visual sensor generally depend on the particular visual task the sensor is intended to be used in. However, translating task requirements directly into low-level geometric ... -
Impact of the -1438G>A polymorphism in the serotonin 2A receptor gene on anthropometric profile and obesity risk: A case-control study in a Spanish Mediterranean population
(2008)Research into the genetic factors that regulate food intake is arousing great interest. The polymorphism -1438G>A in the serotonin 2A receptor or 5-hydroxytriptamine (5-HT) type 2A receptor (5-HTR2A) gene has been ...
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Motion Analysis with the Radon Transform on Log-Polar Images
Springer US (2008-02)Image projections provide an effective way of describing image contents or estimate particular kinds of motion. However, most (if not all) of previous literature on projections has been done on Cartesian images. In contrast, ...
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Dealing with inaccurate face detection for automatic gender recognition with partially occluded faces
Springer Verlag (Germany) (2009)Gender recognition problem has not been extensively studied in situations where the face cannot be accurately detected and it also can be partially occluded. In this contribution, a comparison of several characterisation ... -
Un sistema de Realidad Virtual distribuido basado en la gestión de recursos federados
Asociación de Técnicos de Informática (2009)The vast majority of distributed virtual environments use ad-hoc protocols to share resources and synchronize the interaction of multiple users on a shared virtual world. In this scenario, it is difficult to incorporate ...
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Multidimensional integrated ontologies: a framework for designing semantic data warehouses
Springer Verlag (Germany) (2009)The Semantic Web enables companies and organizations to gather huge amounts of valuable semantically annotated data concerning their subjects of interest. Nowadays, many applications attach metadata and semantic annotations ...
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Ontology integration using mappings: towards getting the right logical consequences
Springer Verlag (Germany) (2009)We propose a general method and novel algorithmic techniques to facilitate the integration of independently developed ontologies using mappings. Our method and techniques aim at helping users understand and evaluate the ...
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A template-based recognition system for on-line handwritten characters
Institute of Information Science, Academia Sinica (2009)New developments on our real-time recognition engine for isolated handwritten characters are presented. This engine is based on approximate Dynamic Time Warping comparisons with prototypes selected by fast, less accurate ...
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Octahedral Transforms for 3D Image Processing
Institute of Electrical and Electronics Engineers (2009)The octahedral group is one of the finite subgroups of the rotation group in three-dimensional Euclidean space and a symmetry group of the cubic grid. Compression and filtering of three-dimensional volumes are given as ...
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Use of ensemble based on GA for imbalance problem
Springer Verlag (Germany) (2009)In real-world applications, it has been observed that class imbalance (significant differences in class prior probabilities) may produce an important deterioration of the classifier performance, in particular with patterns ...
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Exploring early classification strategies of streaming data with delayed attributes
Springer Verlag (Germany) (2009)In contrast to traditional machine learning algorithms, where all data are available in batch mode, the new paradigm of streaming data poses additional difficulties, since data samples arrive in a sequence and many hard ...
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Filter banks for hyperspectral pixel classification of satellite images
Springer Verlag (Germany) (2009)Satellite hyperspectral imaging deals with heterogenous images containing different texture areas. Filter banks are frequently used to characterize textures in the image performing pixel classification. This filters are ...
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Melodic track identification in MIDI files considering the imbalanced context
Springer Verlag (Germany) (2009)In this paper, the problem of identifying the melodic track of a MIDI file in imbalanced scenarios is addressed. A polyphonic MIDI file is a digital score that consists of a set of tracks where usually only one of them ...
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Iniciativas globales para la Observación de la Tierra: Contribuciones europeas a GEOSS
Asociación de Técnicos de Informática (2009)El presente trabajo introduce las iniciativas europeas en materia de política espacial y datos medioambientales que contribuyen al Sistema Global de Sistemas para la Observación de la Tierra (Global Earth Observation ...
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Index of balanced accuracy: a performance measure for skewed class distributions
Springer Verlag (Germany) (2009)This paper introduces a new metric, named Index of Balanced Accuracy, for evaluating learning processes in two-class imbalanced domains. The method combines an unbiased index of its overall accuracy and a measure about how ...
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Information theory tools for viewpoint selection, mesh saliency and geometry simplification
Springer (2009)In this chapter we review the use of an information channel as a unified framework for viewpoint selection, mesh saliency and geometry simplification. Taking the viewpoint distribution as input and object mesh polygons as ...
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Efficient retrieval of ontology fragments using an interval labeling scheme
Elsevier (2009)Nowadays very large domain ontologies are being developed in life-science areas like Biomedicine, Agronomy, Astronomy, etc. Users and applications can benefit enormously from these ontologies in very different tasks, such ...
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Generating complex ontology instances from documents
Elsevier (2009)This paper presents a novel Information Extraction system able to generate complex instances from free text available on the Web. The approach is based on a non-monotonical processing over ontologies, and makes use of ...
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User-assisted simplification method for triangle meshes preserving boundaries
Elsevier (2009)This paper proposes a user-assisted mesh simplification method applied to CAD models converted to triangle meshes. This work offers the possibility of simplifying each subobject independently and at different levels of ...
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Rendering continuous level-of-detail meshes by Masking Strips
Elsevier (2009)In this paper we present a new continuous multiresolution approach which has been developed for the interactive visualization of meshes in real-time applications. Our interest is to offer an efficient solution which considers ...
