Search results for "shape modeling"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
5	Tosiyasu L. Kunii	Computational Shape Modeling: Valid vs. Invalid.	Shape Modeling International	1999	DBLP DOI BibTeX RDF	valid shape modeling, shape equivalence, cellular spatial structures
4	Kenji Ohmori, Tosiyasu L. Kunii	Shape Modeling Using Homotopy.	Shape Modeling International	2001	DBLP DOI BibTeX RDF	homotopy model, filtration, cellular spatial structures
4	Meijing Zhang, Hong Qin	Hierarchical D-NURBS Surfaces and Their Physics-Based Sculpting.	Shape Modeling International	2001	DBLP DOI BibTeX RDF	Physics-based Modeling and Sculpting, Hierarchical Splines and Editing, Computer Graphics, Dynamics, Deformable Models, Shape Modeling, NURBS, Geometric Constraint, CAGD
4	John C. Hart	Computational Topology for Shape Modeling.	Shape Modeling International	1999	DBLP DOI BibTeX RDF
3	Ergun Akleman, Jianer Chen, Jonathan L. Gross	Paper-Strip Sculptures.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Gauss-Bonnet Theorem, Topology, Shape Modeling, Gaussian Curvature
3	Qing Xing, Ergun Akleman, Jianer Chen, Jonathan L. Gross	Single-Cycle Plain-Woven Objects.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Links and Knots, Non-Orientable Surfaces, Shape Modeling, Weaving
3	Zhiqing Cheng, Kathleen M. Robinette	Static and Dynamic Human Shape Modeling.	HCI	2009	DBLP DOI BibTeX RDF	animation, shape modeling, Human body, pose
3	Andrew Nealen, Justus Pett, Marc Alexa, Takeo Igarashi	GridMesh: Fast and high quality 2D Mesh generation for interactive 3D shape modeling.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
3	Wenping Wang	Computation and properties of Centroidal Voronoi Tessellation.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
3	Adeline Pihuit, Paul G. Kry, Marie-Paule Cani	Hands on virtual clay.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
3	David Eppstein, Michael T. Goodrich, Ethan Kim, Rasmus Tamstorf	Approximate topological matching of quadrilateral meshes.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
3	Ye Zhao	GPU-accelerated surface denoising and morphing with lattice Boltzmann scheme.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
3	Linge Bai, Manolya Eyiyurekli, David E. Breen	Self-organizing primitives for automated shape composition.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
3	Monica Bordegoni, Umberto Cugini	Designer-Centered Haptic Interfaces for Shape Modeling.	HCI	2007	DBLP DOI BibTeX RDF	designer-centered user interface, Haptic interfaces, shape modeling, 3D interaction techniques
3	Toon Huysmans, Jan Sijbers, Filiep Vanpoucke, Brigitte Verdonk	Improved Shape Modeling of Tubular Objects Using Cylindrical Parameterization.	MIAR	2006	DBLP DOI BibTeX RDF	tubular objects, statistical shape modeling, mesh parameterization
3	Anthony S. K. Chong, Konstantin Levinski, Alexei Sourin	Interactive Grid-based Free-Form Shape Modeling.	CCGRID	2006	DBLP DOI BibTeX RDF	Free-form shape modeling, Grid Computing
3	Richard Cartwright, Valery Adzhiev, Alexander A. Pasko, Yuichiro Goto, Tosiyasu L. Kunii	Web-Based Shape Modeling with Hyperfun.	IEEE Computer Graphics and Applications	2005	DBLP DOI BibTeX RDF	Web-based modeling, HyperFun, Java, implicit surfaces, Shape modeling, applet, function representation, empirical modeling
3	Bertrand Kerautret, Xavier Granier, Achille J.-P. Braquelaire	Intuitive Shape Modeling by Shading Design.	Smart Graphics	2005	DBLP DOI BibTeX RDF	Shape From Shading, Image Based Modeling, Shape Modeling
3	Ying He 0001, Xianfeng Gu, Hong Qin	Rational Spherical Splines for Genus Zero Shape Modeling.	SMI	2005	DBLP DOI BibTeX RDF
3	Mark Pauly, Richard Keiser, Leif Kobbelt, Markus H. Gross	Shape modeling with point-sampled geometry.	ACM Trans. Graph.	2003	DBLP DOI BibTeX RDF	dynamic sampling, shape modeling, free-form deformation, boolean operations, point-sampled geometry
3	Ioannis P. Ivrissimtzis, Won-Ki Jeong, Hans-Peter Seidel	Using Growing Cell Structures for Surface Reconstruction.	Shape Modeling International	2003	DBLP DOI BibTeX RDF	neural networks, surface reconstruction, mesh generation, shape modeling, growing cell structures
3	Yu-Sung Chang, Kevin T. McDonnell, Hong Qin	An Interpolatory Subdivision for Volumetric Models over Simplicial Complexe.	Shape Modeling International	2003	DBLP DOI BibTeX RDF
3	Jing Hua, Hong Qin	Dynamic Implicit Solids with Constraints for Haptic Sculptin.	Shape Modeling International	2002	DBLP DOI BibTeX RDF
3	Marc Alexa	Wiener Filtering of Meshes.	Shape Modeling International	2002	DBLP DOI BibTeX RDF	Fairing, Mesh, Smoothing, Wiener filter
3	Geoff Wyvill, Chris C. Handley	The 'Thermodynamics' of Shape.	Shape Modeling International	2001	DBLP DOI BibTeX RDF
3	Maxim Kazakov, Alexander A. Pasko, Valery Adzhiev	Fast Navigation through an FRep Sculpture Garden.	Shape Modeling International	2001	DBLP DOI BibTeX RDF	Isosurface Polygonization, FRep, Implicit Surfaces, Interactive Visualization, Shape Modeling
3	Joris S. M. Vergeest, Imre Horváth, Sander Spanjaard	Parameterization of Freeform Features.	Shape Modeling International	2001	DBLP DOI BibTeX RDF
3	Hideki Arata, Yoshiaki Takai, Nami K. Takai, Tsuyoshi Yamamoto	Free-form Shape Modeling by 3D Cellular Automata.	Shape Modeling International	1999	DBLP DOI BibTeX RDF
3	Arne Radetzky, Andreas Nürnberger, Michael Teistler, Dietrich Peter Pretschner	Elastodynamic Shape Modeling in Virtual Medicine.	Shape Modeling International	1999	DBLP DOI BibTeX RDF
3	Ravi Malladi, James A. Sethian, Baba C. Vemuri	Shape Modeling with Front Propagation: A Level Set Approach.	IEEE Trans. Pattern Anal. Mach. Intell.	1995	DBLP DOI BibTeX RDF	interface motion, hyperbolic conservation laws, entropy condition, level sets, Shape modeling, shape recovery, Hamilton-Jacobi equation
2	Herng-Hua Chang, Daniel J. Valentino, Woei-Chyn Chu	Active Shape Modeling with Electric Flows.	IEEE Trans. Vis. Comput. Graph.	2010	DBLP DOI BibTeX RDF	finite-size particle (FSP), Poisson's equation, electrostatic equilibrium, deformable models, Shape modeling, particle systems, shape recovery
2		SMI 2010, Shape Modeling International Conference, Aix en Provence, France, June 21-23 2010	Shape Modeling International	2010	DBLP BibTeX RDF
2	Yamei Wen, Hui Zhang, Zhongmian Yu, Jiaguang Sun, Jean-Claude Paul	Reconstructing 3D Objects from 2D Sectional Views of Engineering Drawings Using Volume-Based Method.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Sectional views, Volume-based, 3D reconstruction, Solid models
2	Jiazhi Xia, Ying He 0001, Xiaotian Yin, Shuchu Han, Xianfeng Gu	Direct-Product Volumetric Parameterization of Handlebodies via Harmonic Fields.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	volume parameterization, polycube, harmonic fields, handlebody, Solid modeling, hexahedral mesh, direct-product
2	Jean-Marie Favreau, Vincent Barra	Tiling Surfaces with Cylinders Using n-loops.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Computational geometry, topology, cutting, mesh segmentation
2	Christopher Weber, Stefanie Hahmann, Hans Hagen	Sharp Feature Detection in Point Clouds.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	unstructured point sets, Gauss map clustering, feature detection, sharp features
2	Livio De Luca, Chawee Busarayat, Chiara Stefani, Noemie Renaudin, Michel Florenzano, Philippe Véron	An Iconography-Based Modeling Approach for the Spatio-Temporal Analysis of Architectural Heritage.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Iconography, uncertainty representation, architectural heritage, information visualization, Image-based-modeling, shape transformation
2	Thomas Bellet, Mathieu Poudret, Agnès Arnould, Laurent Fuchs, Pascale Le Gall	Designing a Topological Modeler Kernel: A Rule-Based Approach.	Shape Modeling International	2010	DBLP DOI BibTeX RDF
2	Richard Pusch, Faramarz Samavati	Local Constraint-Based General Surface Deformation.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	meshes, deformation, subdivision, least-squares, parametric surfaces
2	Alexander A. Pasko, Turlif Vilbrandt, Oleg Fryazinov, Valery Adzhiev	Procedural Function-Based Spatial Microstructures.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	FRep, digital fabrication, lattice, scaffold, porous media, tissue engineering, microstructure
2	Gabriel Taubin, Çagatay Demiralp	Surface Deformations Driven by Vector-Valued 1-Forms.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	differential forms, gradient domain, algorithms, discrete differential geometry, triangle meshes, surface deformation
2	Herbert Grasberger, Andrea Weidlich, Alexander Wilkie, Brian Wyvill	Precise Construction and Control of Implicit Fillets in the BlobTree.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	fillets, the BlobTree, Computer Graphics, CSG, implicit modelling
2	Hichem Barki, Florence Denis, Florent Dupont	A New Algorithm for the Computation of the Minkowski Difference of Convex Polyhedra.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	contributing vertices, Minkowski difference, Nef polyhedra, Minkowski sum
2	Kan-Le Shi, Jun-Hai Yong, Peng Liu, Jia-Guang Sun, Jean-Claude Paul	The Transition Between Sharp and Rounded Features and the Manipulation of Incompatible Boundary in Filling n-sided Holes.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	n-sided hole, incompatible, Coons surfaces, epsilon-G1 continuity, B-spline
2	Kai-Mo Hu, Bin Wang, Yi Gao, Qi-Ming Yuan, Jun-Hai Yong	A Face-Based Shape Matching Method for IGES Surface Model.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	IGES surface model, shape distribution, shape retrieval, retrieval performance
2	John Brosz, Faramarz Samavati	Shape Defined Panoramas.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	rendering, parameterization, parametric surface, panorama, image generation
2	Giuseppe Patanè, Bianca Falcidieno	Multi-scale Feature Spaces for Shape Processing and Analysis.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Scale-space methods, heat kernel, Laplacian matrix, signal and function smoothing, shape analysis, spectral analysis, critical points
2	Suraj Musuvathy, Tobias Martin, Elaine Cohen	Ridge Extraction from Isosurfaces of Volumetric Data Using Implicit B-Splines.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	volumetric grid, B-Spline, isosurface, polygonal mesh, ridge, implicit
2	Xinghua Song, Bert Jüttler, Adrien Poteaux	Hierarchical Spline Approximation of the Signed Distance Function.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	signed distance function, hierarchical T-spline, trimmed offsets
2	Ruding Lou, Jean-Philippe Pernot, Philippe Véron, Franca Giannini, Bianca Falcidieno, Alexei Mikchevitch, Raphael Marc	Semantic-Preserving Mesh Direct Drilling.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	triangle/tetrahedral meshes, shape semantics, drilling operator, mesh deformation
2	Zhouhui Lian, Afzal Godil, Xianfang Sun	Visual Similarity Based 3D Shape Retrieval Using Bag-of-Features.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	SIFT, Local Descriptor, Bag-of-Features, 3D Shape Retrieval
2	Yuntao Jia, Xinlai Ni, Eric Lorimer, Michael Mullan, Ross T. Whitaker, John C. Hart	RBF Dipole Surface Evolution.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	radial basis function, implicit surface, level set, surface fitting, particle system
2	Kai Wang, Guillaume Lavoué, Florence Denis, Atilla Baskurt, Xiyan He	A Benchmark for 3D Mesh Watermarking.	Shape Modeling International	2010	DBLP DOI BibTeX RDF
2	Younis Hijazi, Dominique Bechmann, David Cazier, Cyril Kern, Sylvain Thery	Fully-automatic Branching Reconstruction Algorithm: Application to Vascular Trees.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	furcation, half-edge, vascular, modeling, topology, automatic, branching
2	Jörg Peters, Jianhua Fan	The Projective Linear Transition Map for Constructing Smooth Surfaces.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	unique rational linear transition map, free-form spline surface, non-zero genus, G^s geometric continuity, topology, reparameterization, quad meshes
2	Junjie Cao, Andrea Tagliasacchi, Matt Olson, Hao Zhang 0002, Zhinxun Su	Point Cloud Skeletons via Laplacian Based Contraction.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	topology repair, surface reconstruction, contraction, point cloud, laplacian, curve skeleton
2	Bo Li, Xin Li, Kexiang Wang, Hong Qin	Generalized PolyCube Trivariate Splines.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	Trivariate Spline, Generalized PolyCube, Volumetric Parameterization
2	Xuli Han	Shape Representation of Polynomial Curves with Adjustable Interpolation Points.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	polynomial curve, interpolation curve, shape parameter, B-spline curve
2	David Cazier, Pierre Kraemer	X-maps: An Efficient Model for Non-manifold Modeling.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	geometric modeling, non-manifold, topological model, combinatorial maps
2	Zhi-Quan Cheng, Wei Jiang, Gang Dang, Ralph R. Martin, Jun Li, Honghua Li, Yin Chen, Yanzhen Wang, Bao Li, Kai Xu 0004, Shiyao Jin	Non-rigid Registration in 3D Implicit Vector Space.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	global alignment, dense correspondence, vector distance function, implicit vector space, Non-rigid registration
2	Dimitri Kudelski, Jean-Luc Mari, Sophie Viseur	3D Feature Line Detection Based on Vertex Labeling and 2D Skeletonization.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	3D feature lines, geometric modeling, meshes, skeletonization, mathematical morphology
2	WeiPeng Zhu, Chengying Gao, Xiaonan Luo, Ning Liu	Reversely Anisotropic Quad-dominant Remeshing.	Shape Modeling International	2010	DBLP DOI BibTeX RDF	quad-dominant mesh, anisotropic sampling, mesh coarsening
2	Hitomi Imaizumi, Takayuki Itoh	IGEL: a virtual heat cutter for 3D shape modeling.	VRCAI	2009	DBLP DOI BibTeX RDF	heat cutter, virtual mockup, 3D modeling
2	Jun-Hai Yong, Michela Spagnuolo, Wenping Wang (eds.)	IEEE International Conference on Shape Modeling and Applications, SMI 2009, Beijing, China, 26-28 June 2009	Shape Modeling International	2009	DBLP BibTeX RDF
2	Jean-Claude Léon, Leila De Floriani, Franck Hétroy	Classification of non-manifold singularities from transformations of 2-manifolds.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Lili Wan	Parts-based 2D shape decomposition by convex hull.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Fan Chen, Ye Zhao	Distance field transform with an adaptive iteration method.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Yongwei Miao, Pablo Diaz-Gutierrez, Renato Pajarola, M. Gopi, Jieqing Feng	Shape isophotic error netric controllable re-sampling for point-sampled surfaces.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Halim Benhabiles, Jean-Philippe Vandeborre, Guillaume Lavoué, Mohamed Daoudi	A framework for the objective evaluation of segmentation algorithms using a ground-truth of human segmented 3D-models.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Miao Jin, Wei Zeng, Ning Ding, Xianfeng Gu	Computing Fenchel-Nielsen coordinates in Teichmuller shape Space.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Shankar Krishnan, Suresh Venkatasubramanian	Approximate shape matching and symmetry detection for 3D shapes with guaranteed error bounds.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Wei Li 0024, Youngung Shon, Sara McMains	Haptic rendering using C1 continuous reconstructed distance fields.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Wei Zeng, Miao Jin, Feng Luo 0002, Xianfeng Gu	Canonical homotopy class representative using hyperbolic structure.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Chongyang Deng, Xunnian Yang	Interpolation over arbitrary topology meshes using Doo-Sabin surfaces.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Min Liu, Karthik Ramani	On minimal orthographic view covers for polyhedra.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Chuhua Xian, Hongwei Lin, Shuming Gao	Automatic generation of coarse bounding cages from dense meshes.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Jens Kerber, Art Tevs, Alexander G. Belyaev, Rhaleb Zayer, Hans-Peter Seidel	Feature sensitive bas relief generation.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Jean-Philippe Pernot, Franca Giannini, Bianca Falcidieno, J.-C. Léon	Parameterised free-form feature templates.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Zhong Li, B. Barsky, Xiaogang Jin	An effective third-order local fitting patch and its application.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Yaron Holdstein, Anath Fischer, Lev Podshivalov, Pinhas Z. Bar-Yoseph	Volumetric texture synthesis of bone micro-structure as a base for scaffold design.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Bo Shu, Xianjie Qiu, Zhaoqi Wang	Image based modeling via plane sweep based surface growing.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Hichem Barki, Florence Denis, Florent Dupont	Contributing vertices-based Minkowski sum of a non-convex polyhedron without fold and a convex polyhedron.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Dan Albocher, Gershon Elber	On the computation of the minimal ellipse enclosing a set of planar curves.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Huanxi Zhao, Xia Qiu, Luming Liang, Chuan Sun, Beiji Zou	Curvature normal vector driven interpolatory subdivision.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Alan Brunton, Stefanie Wuhrer, Chang Shu, Prosenjit Bose, Erik D. Demaine	Filling holes in triangular meshes by curve unfolding.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Caiming Zhang, Feng Li, Dongmei Niu, Xingqiang Yang	Interpolation to C1 boundary conditions by polynomial of degree six.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Mehdi Baba-ali, David Marcheix, Xavier Skapin	An edge matching technique for non-planar face intersections in geometric parametric models.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Oleg Fryazinov, Alexander A. Pasko, Valery Adzhiev	An exact representation of polygonal objects by C1-continuous scalar fields based on binary space partitioning.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Ming Luo, Adrian G. Bors	Shape watermarking based on minimizing the quadric error metric.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Wenbing Ge, Gang Xu, Kin-Chuen Hui, Guoping Wang	Detail-preserving axial deformation using curve pairs.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Zhixun Su, Hui Wang, Junjie Cao	Mesh denoising based on differential coordinates.	Shape Modeling International	2009	DBLP DOI BibTeX RDF
2	Qingde Li, Jie Tian	2D piecewise algebraic splines for implicit modeling.	ACM Trans. Graph.	2009	DBLP DOI BibTeX RDF	Algebraic splines, implicit surface, level set, isosurface, CSG, implicit modeling, implicit curve, function-based shape modeling
2	Alexei Sourin, Olga Sourina, Lei Wei 0002, Paul Gagnon	Visual Immersive Haptic Mathematics in Shared Virtual Spaces.	Transactions on Computational Science	2009	DBLP DOI BibTeX RDF	Networked Learning, Virtual Learning, Haptic Collaboration, Distance Education, Shape Modeling, Web Technologies, Web-Based Learning, Virtual Classroom, Virtual Campus, Shared Virtual Spaces
2		2008 International Conference on Shape Modeling and Applications (SMI 2008), June 4-6, 2008, Stony Brook, NY, USA	Shape Modeling International	2008	DBLP BibTeX RDF
2	Prathap Nair, Andrea Cavallaro	SHREC'08 entry: Registration and retrieval of 3D faces using a Point Distribution Model.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
2	Martin Aigner, Bert Jüttler	Gauss-Newton-type techniques for robustly fitting implicitly defined curves and surfaces to unorganized data points.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
2	Yi-Ling Chen, Xiang Zhang	A memory effective two-phase approach for large scanned surface mesh simplification.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
2	Dong Xu, Ping Hu, Weiguo Cao, Hua Li	SHREC'08 entry: 3D face recognition using moment invariants.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
2	S. Cihan Bilir, Yücel Yemez	Time varying surface reconstruction from multiview video.	Shape Modeling International	2008	DBLP DOI BibTeX RDF
2	Ryutarou Ohbuchi, Kunio Osada, Takahiko Furuya, Tomohisa Banno	Salient local visual features for shape-based 3D model retrieval.	Shape Modeling International	2008	DBLP DOI BibTeX RDF