Search results for "ODE"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
29	Huan-Yu Zhu, Huai-Ning Wu, Jun-Wei Wang 0001	Fuzzy Control With Guaranteed Cost for Nonlinear Coupled Parabolic PDE-ODE Systems via PDE Static Output Feedback and ODE State Feedback.	IEEE Trans. Fuzzy Syst.	2018	DBLP DOI BibTeX RDF
29	Roswitha März	New answers to an old question in the theory of differential-algebraic equations: Essential underlying ODE versus inherent ODE.	J. Comput. Appl. Math.	2017	DBLP DOI BibTeX RDF
29	Arash Mohammadi 0002, Shady M. K. Mohamed, Saeid Nahavandi, Karsten Ahnert	CISR-ODE, A C++ Framework with ODE Solver for Code Based System Dynamics Simulation.	SMC	2015	DBLP DOI BibTeX RDF
29	Huai-Ning Wu, Jun-Wei Wang 0001	Static output feedback control via PDE boundary and ODE measurements in linear cascaded ODE-beam systems.	Autom.	2014	DBLP DOI BibTeX RDF
27	François Boulier, François Lemaire, Alexandre Sedoglavic, Asli Ürgüplü	Towards an Automated Reduction Method for Polynomial ODE Models of Biochemical Reaction Systems.	Math. Comput. Sci.	2009	DBLP DOI BibTeX RDF	cellular biology, system modeling, Computer algebra, differential algebra
27	Donna Carnes	Ode to a Sailor.	ACM Queue	2008	DBLP DOI BibTeX RDF
27	Fernando J. Barros	Comparing Synchronous and Asynchronous Variable Step Size Explicit ODE Solvers: A Simulation Study.	PADS	2007	DBLP DOI BibTeX RDF
27	Jacques M. Bahi, Jean-Claude Charr, Raphaël Couturier, David Laiymani	A parallel algorithm to solve large stiff ODE systems on grid systems.	CLUSTER	2007	DBLP DOI BibTeX RDF
27	N. A. Kostov, Z. T. Kostova	Exact Solutions of Completely Integrable Systems and Linear ODE's Having Elliptic Function Coefficients.	CASC	2007	DBLP DOI BibTeX RDF
27	Werner H. Schmidt	Numerical Methods for Optimal Control Problems with ODE or Integral Equations.	LSSC	2005	DBLP DOI BibTeX RDF
27	Alexander D. Bruno, Victor F. Edneral	Normal Forms and Integrability of ODE Systems.	CASC	2005	DBLP DOI BibTeX RDF
27	José Miguel Mantas Ruiz, Julio Ortega, Jose Antonio Carrillo de la Plata	Integrating Multiple Implementations and Structure Exploitation in the Component-Based Design of Parallel ODE Solvers.	PVM/MPI	2003	DBLP DOI BibTeX RDF
27	Fabrice Rastello, Thierry Dauxois	Efficient Tiling for an ODE Discrete Integration Program: Redundant Tasks Instead of Trapezoidal Shaped-Tiles.	IPDPS	2002	DBLP DOI BibTeX RDF
27	Daniele Bertaccini, Michael K. Ng 0001	Skew-Circulant Preconditioners for Systems of LMF-Based ODE Codes.	NAA	2000	DBLP DOI BibTeX RDF
27	Claus Bendtsen	A parallel stiff ODE solver based on MIRKs.	Adv. Comput. Math.	1997	DBLP DOI BibTeX RDF	stiff ordinary differential equations, multi-implicit Runge-Kutta methods, parallelism across the method, parallel computation
27	Pierluigi Amodio, Luigi Brugnano	Parallel ODE solvers based on block BVMs.	Adv. Comput. Math.	1997	DBLP DOI BibTeX RDF
27	Rakesh Agrawal 0001, Narain H. Gehani	ODE (Object Database and Environment): The Language and the Data Model.	SIGMOD Conference	1989	DBLP DOI BibTeX RDF	C++
24	Punyaslok Purkayastha, John S. Baras	Convergence results for ant routing algorithms viastochastic approximation.	HSCC	2010	DBLP DOI BibTeX RDF	ant routing algorithms, stochastic approximations and learning algorithms, queuing networks
24	Sergiy Y. Gogolenko, Volodymyr Svjatnyj	Architecture aware parallelization of solvers for PDE systems on geometrical graphs.	Comput. Sci. Res. Dev.	2009	DBLP DOI BibTeX RDF	Dynamic network object, Partial differential equation on geometrical graph, Architecture aware partitioning, Statistical optimization methods, Bayesian heuristic approach, Method of lines
24	Jong-Shi Pang, David E. Stewart	Solution dependence on initial conditions in differential variational inequalities.	Math. Program.	2009	DBLP DOI BibTeX RDF
24	Soumya Banerjee 0003, Melanie E. Moses	A Hybrid Agent Based and Differential Equation Model of Body Size Effects on Pathogen Replication and Immune System Response.	ICARIS	2009	DBLP DOI BibTeX RDF
24	Bin Yang, Yuehui Chen, Qingfang Meng	Inference of Differential Equations for Modeling Chemical Reactions.	ISNN (1)	2009	DBLP DOI BibTeX RDF	Particle swarm optimization, Ordinary differential equations, Chemical reaction, Multi expression programming
24	Stephen Gilmore, Jane Hillston	Foreword.	SIGMETRICS Perform. Evaluation Rev.	2008	DBLP DOI BibTeX RDF
24	Leonard J. Jowers, James J. Buckley, Kevin D. Reilly	Simulating continuous fuzzy systems for fuzzy solution surfaces.	Soft Comput.	2008	DBLP DOI BibTeX RDF
24	Andrzej Bielecki, Piotr Kalita, Marian Lewandowski, Marek Skomorowski	Compartment model of neuropeptide synaptic transport with impulse control.	Biol. Cybern.	2008	DBLP DOI BibTeX RDF
24	Huai-Ning Wu, Han-Xiong Li	H∞ Fuzzy Observer-Based Control for a Class of Nonlinear Distributed Parameter Systems With Control Constraints.	IEEE Trans. Fuzzy Syst.	2008	DBLP DOI BibTeX RDF
24	Huai-Ning Wu, Han-Xiong Li	A Galerkin/Neural-Network-Based Design of Guaranteed Cost Control for Nonlinear Distributed Parameter Systems.	IEEE Trans. Neural Networks	2008	DBLP DOI BibTeX RDF
24	Huai-Ning Wu, Han-Xiong Li	Finite-Dimensional Constrained Fuzzy Control for a Class of Nonlinear Distributed Process Systems.	IEEE Trans. Syst. Man Cybern. Part B	2007	DBLP DOI BibTeX RDF
24	Jean-Luc Lugrin, Rémi Chaignon, Marc Cavazza	A High-level Event System for Augmented Reality.	ISMAR	2007	DBLP DOI BibTeX RDF
24	Yunong Zhang, Ke Chen 0004, Weimu Ma, Xiaodong Li 0011	MATLAB Simulation of Gradient-Based Neural Network for Online Matrix Inversion.	ICIC (2)	2007	DBLP DOI BibTeX RDF	Online matrix inversion, Gradient-based neural network, MATLAB simulation, Kronecker product
24	Mark van Hoeij	Solving third order linear differential equations in terms of second order equations.	ISSAC	2007	DBLP DOI BibTeX RDF	reduction of order, linear differential equations
24	Xiaolan Zhang 0003, Giovanni Neglia, James F. Kurose, Donald F. Towsley	Performance Modeling of Epidemic Routing.	Networking	2006	DBLP DOI BibTeX RDF	performance modeling, wireless ad hoc networks, Delay tolerant networks, ordinary differential equations, epidemic routing
24	Paola Belardini, Claudio Bertoli, Stefania Corsaro, Pasqua D'Ambra	Introducing Combustion-Turbulence Interaction in Parallel Simulation of Diesel Engines.	HPCC	2006	DBLP DOI BibTeX RDF
24	Harold J. Kushner, Philip A. Whiting	Convergence of proportional-fair sharing algorithms under general conditions.	IEEE Trans. Wirel. Commun.	2004	DBLP DOI BibTeX RDF
24	Jing-Ru C. Cheng, Paul E. Plassmann	A Parallel Particle Tracking Framework for Applications in Scientific Computing.	J. Supercomput.	2004	DBLP DOI BibTeX RDF	particle tracking, repartitioning strategy, three-dimensional unstructured mesh, parallel computing, scientific computing, distributed memory
24	Jaroslaw Forenc, Andrzej Jordan	The Modified Speculative Method for the Transient States Analysis.	PARELEC	2004	DBLP DOI BibTeX RDF
24	Reinhold Burger, George Labahn, Mark van Hoeij	Closed form solutions of linear odes having elliptic function coefficients.	ISSAC	2004	DBLP DOI BibTeX RDF	Kovacic's algorithm, elliptic functions, linear odes, decision procedures
24	Junlan Zhou, Zhengrong Ji, Mineo Takai, Rajive L. Bagrodia	Maya: a Multi-Paradigm Network Modeling Framework.	PADS	2003	DBLP DOI BibTeX RDF
24	M. K. El-Daou	Computable Error Bounds for Coefficients Perturbation Methods.	Computing	2002	DBLP DOI BibTeX RDF	2000 Mathematics Subject Classification: 65L05, 65L70
24	Shigeyuki Miyagi, Hideaki Sakai	Performance comparison between the filtered-error LMS and the filtered-X LMS algorithms [ANC].	ISCAS (2)	2001	DBLP DOI BibTeX RDF
24	François Boulier, François Lemaire	Computing canonical representatives of regular differential ideals.	ISSAC	2000	DBLP DOI BibTeX RDF	Rosenfeld-Gröbner, canonical representatives, characteristic presentations, lextriangular, regular differential ideal, differential algebra, characteristic sets
24	Nedialko S. Nedialkov, Kenneth R. Jackson	An Interval Hermite-Obreschkoff Method for Computing Rigorous Bounds on the Solution of an Initial Value Problem for an Ordinary Differential Equation.	Reliab. Comput.	1999	DBLP DOI BibTeX RDF
24	Martin Berz, Kyoko Makino	Verified Integration of ODEs and Flows Using Differential Algebraic Methods on High-Order Taylor Models.	Reliab. Comput.	1998	DBLP DOI BibTeX RDF
24	Yi-Jen Wang, Chin-Teng Lin	Runge-Kutta neural network for identification of dynamical systems in high accuracy.	IEEE Trans. Neural Networks	1998	DBLP DOI BibTeX RDF
24	Isaac E. Lagaris, Aristidis Likas, Dimitrios I. Fotiadis	Artificial neural networks for solving ordinary and partial differential equations.	IEEE Trans. Neural Networks	1998	DBLP DOI BibTeX RDF
24	John A. Flanagan, Martin Hasler	Self-Organising Artificial Neural Networks.	IWANN	1995	DBLP DOI BibTeX RDF
24	M. Julia Flores, José A. Gámez 0001, Ana M. Martínez, José Miguel Puerta	HODE: Hidden One-Dependence Estimator.	ECSQARU	2009	DBLP DOI BibTeX RDF	AODE, SPODE, Classification, Bayesian Networks, Bayesian Classifiers, ODE
24	Johan Jansson, Anders Logg	Algorithms and Data Structures for Multi-Adaptive Time-Stepping.	ACM Trans. Math. Softw.	2008	DBLP DOI BibTeX RDF	DOLFIN, Multi-adaptivity, continuous Galerkin, individual time steps, local time steps, mcgq, mdgq, algorithms, C++, implementation, multirate, ODE, discontinuous Galerkin
24	François Baccelli, Ki Baek Kim, David R. McDonald	Equilibria of a class of transport equations arising in congestion control.	Queueing Syst. Theory Appl.	2007	DBLP DOI BibTeX RDF	Stationary solutions, Congestion control, PDE, Density, Uniqueness, ODE
24	Lawrence F. Shampine	Error Estimation and Control for ODEs.	J. Sci. Comput.	2005	DBLP DOI BibTeX RDF	IVP, error estimation, error control, ODE
24	Yasunori Osana, Tomonori Fukushima, Masato Yoshimi, Yow Iwaoka, Yuichiro Shibata, Hiroaki Kitano, Akira Funahashi, Noriko Hiroi, Hideharu Amano	An FPGA-Based, Multi-model Simulation Method for Biochemical Systems.	IPDPS	2005	DBLP DOI BibTeX RDF	Biochemical simulation, FPGA, ODE, SBML, Multimodel
24	Robert F. Enenkel, Kenneth R. Jackson	DIMSEMs - diagonally implicit single-eigenvalue methods for the numerical solution of stiff ODEs on parallel computers.	Adv. Comput. Math.	1997	DBLP DOI BibTeX RDF	IVP, general linear method, GLM, parallel, stability, order, ordinary differential equation, numerical solution, initial value problem, ODE
23	Gang Bao, Guangye Li	Optimal Design in Nonlinear Optics.	Encyclopedia of Optimization	2009	DBLP DOI BibTeX RDF	ODE two-point boundary value problem, Nonlinear optics, Optimal design, Parameter identification
23	Darong Lai, Hongtao Lu, Mario Lauria, Diego di Bernardo, Christine Nardini	MANIA: A Gene Network Reverse Algorithm for Compounds Mode-of-Action and Genes Interactions Inference.	Complex (1)	2009	DBLP DOI BibTeX RDF	Ordinary Differential Equations (ODE), compound mode-of-action, reverse engineering, gene expression, gene network
23	Jingwei Zhang 0002, Masha Sosonkina, Layne T. Watson, Yang Cao 0001	Parallel solution of the chemical master equation.	SpringSim	2009	DBLP DOI BibTeX RDF	chemical master equation, numerical ODE method, parallel computing
23	Shie Mannor, Jeff S. Shamma, Gürdal Arslan	Online calibrated forecasts: Memory efficiency versus universality for learning in games.	Mach. Learn.	2007	DBLP DOI BibTeX RDF	Learning in games, Fictitious play, Prediction of universal sequences, The ODE method, Calibration, Forecasting, Stochastic approximation
15	Ruixia Cao, Shangjun Hou, Lin Ma	A Pipeline-Based ODE Solving Framework.	IEEE Access	2024	DBLP DOI BibTeX RDF
15	Xiao Zhang, Chongxing Song, Tao You, Qicheng Bai, Wei Wei 0008, Lei Zhang 0054	Dual ODE: Spatial-Spectral Neural Ordinary Differential Equations for Hyperspectral Image Super-Resolution.	IEEE Trans. Geosci. Remote. Sens.	2024	DBLP DOI BibTeX RDF
15	Mohit Mishra, Gildas Besançon, Guillaume Chambon, Laurent Baillet	Calculus of variations for estimation in ODE-PDE landslide-like models with discrete-time asynchronous measurements.	Int. J. Control	2024	DBLP DOI BibTeX RDF
15	Jakob Gabriel, Joachim Deutscher	Robust Cooperative Output Regulation for Networks of Hyperbolic PIDE-ODE Systems.	IEEE Trans. Autom. Control.	2024	DBLP DOI BibTeX RDF
15	Ikumi Okubo, Keisuke Sugiura, Hiroki Matsutani	A Cost-Efficient FPGA Implementation of Tiny Transformer Model using Neural ODE.	CoRR	2024	DBLP DOI BibTeX RDF
15	Koji Hashimoto, Yuji Hirono, Akiyoshi Sannai	Unification of Symmetries Inside Neural Networks: Transformer, Feedforward and Neural ODE.	CoRR	2024	DBLP DOI BibTeX RDF
15	Daniel Doehring, Michael Schlottke-Lakemper, Gregor J. Gassner, Manuel Torrilhon	Multirate Time-Integration based on Dynamic ODE Partitioning through Adaptively Refined Meshes for Compressible Fluid Dynamics.	CoRR	2024	DBLP DOI BibTeX RDF
15	Zijie Huang 0002, Jeehyun Hwang, Junkai Zhang, Jinwoo Baik, Weitong Zhang, Dominik Wodarz, Yizhou Sun, Quanquan Gu, Wei Wang	Causal Graph ODE: Continuous Treatment Effect Modeling in Multi-agent Dynamical Systems.	CoRR	2024	DBLP DOI BibTeX RDF
15	Nicola Guglielmi, Stefano Sicilia	Stabilization of a matrix via a low rank-adaptive ODE.	CoRR	2024	DBLP DOI BibTeX RDF
15	Nicolás Ureña, Antonio M. Vargas	Numerical solution to a Parabolic-ODE Solow model with spatial diffusion and technology-induced motility.	CoRR	2024	DBLP DOI BibTeX RDF
15	Thai Duong, Abdullah Altawaitan, Jason Stanley, Nikolay Atanasov 0001	Port-Hamiltonian Neural ODE Networks on Lie Groups For Robot Dynamics Learning and Control.	CoRR	2024	DBLP DOI BibTeX RDF
15	Krzysztof Kacprzyk, Samuel Holt, Jeroen Berrevoets, Zhaozhi Qian, Mihaela van der Schaar	ODE Discovery for Longitudinal Heterogeneous Treatment Effects Inference.	CoRR	2024	DBLP DOI BibTeX RDF
15	Bob Junyi Zou, Matthew E. Levine, Dessi P. Zaharieva, Ramesh Johari, Emily B. Fox	Hybrid Square Neural ODE Causal Modeling.	CoRR	2024	DBLP DOI BibTeX RDF
15	Shuze Liu, Shuhang Chen, Shangtong Zhang	The ODE Method for Stochastic Approximation and Reinforcement Learning with Markovian Noise.	CoRR	2024	DBLP DOI BibTeX RDF
15	Cheng Chi	Neural Optimal Control: Concurrent System Identification and Control Learning with Neural ODE.	CoRR	2024	DBLP DOI BibTeX RDF
15	Ruprecht Altenburger, Andreas Henrici, Marcello Robbiani	Analytical solution of an Ill-posed system of nonlinear ODE's.	Commun. Nonlinear Sci. Numer. Simul.	2024	DBLP DOI BibTeX RDF
15	Phuong Dinh, Deddy Jobson, Takashi Sano, Hirotada Honda, Shugo Nakamura	Understanding Neural ODE prediction decision using SHAP.	NLDL	2024	DBLP BibTeX RDF
15	Yubo Cai, Gleb Pogudin	Dissipative quadratizations of polynomial ODE systems.	TACAS (2)	2024	DBLP DOI BibTeX RDF
15	Chen Cheng, Jinglai Li	ODEs Learn to Walk: ODE-Net based Data-Driven Modeling for Crowd Dynamics.	AAMAS	2024	DBLP BibTeX RDF
15	Runing Yang, Ruoxi Jia 0001, Xiangyu Zhang 0010, Ming Jin 0002	Certifiably Robust Neural ODE With Learning-Based Barrier Function.	IEEE Control. Syst. Lett.	2023	DBLP DOI BibTeX RDF
15	Julian Barreiro-Gomez, Jorge I. Poveda	Recurrent Neural Network ODE Output for Classification Problems Follows the Replicator Dynamics.	IEEE Control. Syst. Lett.	2023	DBLP DOI BibTeX RDF
15	Zibo Liu, Parshin Shojaee, Chandan K. Reddy	Graph-based Multi-ODE Neural Networks for Spatio-Temporal Traffic Forecasting.	Trans. Mach. Learn. Res.	2023	DBLP BibTeX RDF
15	Yi Heng Lim, Muhammad Firmansyah Kasim	Unifying physical systems' inductive biases in neural ODE using dynamics constraints.	Trans. Mach. Learn. Res.	2023	DBLP BibTeX RDF
15	Thibault Liard, Raphael E. Stern, Maria Laura Delle Monache	A PDE-ODE model for traffic control with autonomous vehicles.	Networks Heterog. Media	2023	DBLP DOI BibTeX RDF
15	John Harwell, Angel Sylvester, Maria L. Gini	An empirical characterization of ODE models of swarm behaviors in common foraging scenarios.	Auton. Robots	2023	DBLP DOI BibTeX RDF
15	Najmeh Ghaderi	On a new method for the state and output feedback exponential stabilization of a cascaded wave PDE-ODE system with nonlinear boundary condition.	IMA J. Math. Control. Inf.	2023	DBLP DOI BibTeX RDF
15	Haixu Wang, Jiguo Cao	pCODE: Estimating Parameters of ODE Models.	R J.	2023	DBLP DOI BibTeX RDF
15	Taejin Jang, Maitri Uppaluri, Kyeongjun Seo, Venkatasailanathan Ramadesigan, Venkat R. Subramanian 0001	A Sparse Differential Algebraic Equation (DAE) and Stiff Ordinary Differential Equation (ODE) Solver in Maple.	Maple Trans.	2023	DBLP DOI BibTeX RDF
15	Kamran Pentland, Massimiliano Tamborrino, Timothy John Sullivan, James Buchanan, Lynton C. Appel	GParareal: a time-parallel ODE solver using Gaussian process emulation.	Stat. Comput.	2023	DBLP DOI BibTeX RDF
15	Matshidiso Joyce Taole	Teaching Practice Supervisors' Experiences of Being Involved in Mobile App Development at an ODe-L Institution.	Int. J. Online Pedagog. Course Des.	2023	DBLP DOI BibTeX RDF
15	Flavian Emmanuel Sapnken, Khazali Acyl Ahmat, Michel Boukar, Serge Luc Biobiongono Nyobe, Jean Gaston Tamba	Learning latent dynamics with a grey neural ODE prediction model and its application.	Grey Syst. Theory Appl.	2023	DBLP DOI BibTeX RDF
15	Elham Aarabi, Mohammad Ali Ghadiri-Modarres, Mohsen Mojiri	Adaptive Backstepping Stabilization of Thermoacoustic Instability in a Linearized ODE-PDE Rijke Tube Model.	IEEE Access	2023	DBLP DOI BibTeX RDF
15	Hirotada Honda, Takashi Sano, Shugo Nakamura, Mitsuaki Ueno, Hiroki Hanazawa, Nguyen Manh Duc Tuan	An ODE-based neural network with Bayesian optimization.	JSIAM Lett.	2023	DBLP DOI BibTeX RDF
15	Shoukry El-Ganaini, Sachin Kumar 0004	Symbolic computation to construct new soliton solutions and dynamical behaviors of various wave structures for two different extended and generalized nonlinear Schrödinger equations using the new improved modified generalized sub-ODE proposed method.	Math. Comput. Simul.	2023	DBLP DOI BibTeX RDF
15	Uwe Schmitt, Beatrice Moser, Christiane S. Lorenz, Alexandre Refregier	sympy2c: From symbolic expressions to fast C/C++ functions and ODE solvers in Python.	Astron. Comput.	2023	DBLP DOI BibTeX RDF
15	Ruicheng Li, Feng-Fei Jin	Boundary output feedback stabilization for a cascaded wave PDE-ODE system with velocity recirculation and matched disturbance.	Appl. Math. Comput.	2023	DBLP DOI BibTeX RDF
15	Alessandro Borri, Francesco Carravetta, Pasquale Palumbo	Quadratized Taylor series methods for ODE numerical integration.	Appl. Math. Comput.	2023	DBLP DOI BibTeX RDF
15	Susmit Bagchi	Analysis of Finite Solution Spaces of Second-Order ODE with Dirac Delta Periodic Forcing.	Axioms	2023	DBLP DOI BibTeX RDF
15	Stefan M. Filipov, Jordan Hristov, Ana Avdzhieva, István Faragó	A Coupled PDE-ODE Model for Nonlinear Transient Heat Transfer with Convection Heating at the Boundary: Numerical Solution by Implicit Time Discretization and Sequential Decoupling.	Axioms	2023	DBLP DOI BibTeX RDF
15	Habib Ayadi, Nizar Mahfoudhi	Local exponential stabilization of a coupled ODE-Fisher's PDE system.	Eur. J. Control	2023	DBLP DOI BibTeX RDF
15	Chunting Ji, Zhengqiang Zhang, Xue-Jun Xie, Shuzhi Sam Ge	Event-Triggered Control for a Second Order ODE-Heat System Coupling at Intermediate Point.	IEEE Trans. Circuits Syst. I Regul. Pap.	2023	DBLP DOI BibTeX RDF
15	Ke Ma 0006, Fan Zhang 0071, Wenqiang Tian, Zhaocheng Wang 0001	Continuous-Time mmWave Beam Prediction With ODE-LSTM Learning Architecture.	IEEE Wirel. Commun. Lett.	2023	DBLP DOI BibTeX RDF
15	Ji Wang, Miroslav Krstic	Event-Triggered Adaptive Control of a Parabolic PDE-ODE Cascade With Piecewise-Constant Inputs and Identification.	IEEE Trans. Autom. Control.	2023	DBLP DOI BibTeX RDF
15	Alexey Ovchinnikov, Gleb Pogudin, Peter Thompson 0003	Input-Output Equations and Identifiability of Linear ODE Models.	IEEE Trans. Autom. Control.	2023	DBLP DOI BibTeX RDF