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Fit indices in covariance structure modeling: Sensitivity to underparameterized model misspecification

by Li-tze Hu, Peter M. Bentler - Psychological Methods , 1998
"... This study evaluated the sensitivity of maximum likelihood (ML)-, generalized least squares (GLS)-, and asymptotic distribution-free (ADF)-based fit indices to model misspecification, under conditions that varied sample size and distribution. The effect of violating assumptions of asymptotic robustn ..."
Abstract - Cited by 543 (0 self) - Add to MetaCart
robustness theory also was ex-amined. Standardized root-mean-square residual (SRMR) was the most sensitive index to models with misspecified factor covariance(s), and Tucker-Lewis Index (1973; TLI), Bollen's fit index (1989; BL89), relative noncentrality index (RNI), comparative fit index (CFI

Real-Time Tracking of Non-Rigid Objects using Mean Shift

by Dorin Comaniciu, Visvanathan Ramesh, Peter Meer - IEEE CVPR 2000 , 2000
"... A new method for real-time tracking of non-rigid objects seen from a moving camera isproposed. The central computational module is based on the mean shift iterations and nds the most probable target position in the current frame. The dissimilarity between the target model (its color distribution) an ..."
Abstract - Cited by 815 (19 self) - Add to MetaCart
A new method for real-time tracking of non-rigid objects seen from a moving camera isproposed. The central computational module is based on the mean shift iterations and nds the most probable target position in the current frame. The dissimilarity between the target model (its color distribution

Kernel-Based Object Tracking

by Dorin Comaniciu, Visvanathan Ramesh, Peter Meer , 2003
"... A new approach toward target representation and localization, the central component in visual tracking of non-rigid objects, is proposed. The feature histogram based target representations are regularized by spatial masking with an isotropic kernel. The masking induces spatially-smooth similarity fu ..."
Abstract - Cited by 900 (4 self) - Add to MetaCart
A new approach toward target representation and localization, the central component in visual tracking of non-rigid objects, is proposed. The feature histogram based target representations are regularized by spatial masking with an isotropic kernel. The masking induces spatially-smooth similarity

Automatic Scene Structure and Camera Motion Using A Catadioptric System

by Maxime Lhuillier , 2007
"... Fully automatic methods are presented for the estimation of scene structure and camera motion from an image sequence acquired by a catadioptric system. The first contribution is the design of bundle adjustments for both central and non-central models, by taking care of the smoothness of the minimize ..."
Abstract - Cited by 17 (7 self) - Add to MetaCart
Fully automatic methods are presented for the estimation of scene structure and camera motion from an image sequence acquired by a catadioptric system. The first contribution is the design of bundle adjustments for both central and non-central models, by taking care of the smoothness

Making Non-Centralized a Model Predictive Control Scheme by Using Distributed Smith Dynamics?

by J. Barreiro-gomez, G. Ob, O C. Ocampo-martinez, N. Quijano
"... (e-mail: {j.barreiro135, ge-oband, nquijano} @ uniandes.edu.co) Abstract: This paper proposes a non–centralized Model Predictive Control (MPC) scheme for a system comprised by several sub-systems. Operational constraints for each sub–system are considered as well as a single coupled constraint on th ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
(e-mail: {j.barreiro135, ge-oband, nquijano} @ uniandes.edu.co) Abstract: This paper proposes a non–centralized Model Predictive Control (MPC) scheme for a system comprised by several sub-systems. Operational constraints for each sub–system are considered as well as a single coupled constraint

URBAN GENERAL EQUILIBRIUM MODELS WITH NON-CENTRAL PRODUCTION

by unknown authors
"... The paper develops general equilibrium conditions for urban models with non-central production of a local "retail " commodity- The commodity is produced by workers who commute circumferentially to work and is purchased by consumers who make circumferential shopping trips. was suggested by ..."
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The paper develops general equilibrium conditions for urban models with non-central production of a local "retail " commodity- The commodity is produced by workers who commute circumferentially to work and is purchased by consumers who make circumferential shopping trips. was suggested

Autocalibration & 3D Reconstruction with Non-central Catadioptric Cameras

by Branislav Micusik, Tomas Pajdla , 2004
"... We present a technique for modeling non-central catadioptric cameras consisting of perspective cameras and curved mirrors. The real catadioptric cameras have to be treated as non-central cameras, since they do not possess a single viewpoint. We present a method for solving the correspondence problem ..."
Abstract - Cited by 42 (1 self) - Add to MetaCart
We present a technique for modeling non-central catadioptric cameras consisting of perspective cameras and curved mirrors. The real catadioptric cameras have to be treated as non-central cameras, since they do not possess a single viewpoint. We present a method for solving the correspondence

Spectrum Sharing for Unlicensed Bands

by Raul Etkin, Abhay Parekh, David Tse - in IEEE DySPAN 2005 , 2005
"... We study a spectrum sharing problem in an unlicensed band where multiple sys-tems coexist and interfere with each other. Due to asymmetries and selfish system behavior, unfair and inefficient situations may arise. We investigate whether efficiency and fairness can be obtained with self-enforcing spe ..."
Abstract - Cited by 302 (4 self) - Add to MetaCart
-enforcing spectrum sharing rules. These rules have the advantage of not requiring a central authority that verifies compliance to the protocol. Any self-enforcing protocol must correspond to an equilibrium of a game. We first analyze the possible outcomes of a one shot game, and observe that in many cases

The Bits and Flops of the N-hop Multilateration Primitive For Node Localization Problems

by Andreas Savvides, Heemin Park, Mani B. Srivastava , 2002
"... The recent advances in MEMS, embedded systems and wireless communication technologies are making the realization and deployment of networked wireless microsensors a tangible task. Vital to the success of wireless microsensor networks is the ability of microsensors to "collectively perform sensi ..."
Abstract - Cited by 280 (2 self) - Add to MetaCart
hops away and distance measurements to neighboring nodes. To prevent error accumulation in the network, node locations are computed by setting up and solving a global non-linear optimization problem. The solution is presented in two computation models, centralized and a fully distributed approximation

Towards complete generic camera calibration

by Srikumar Ramalingam, Peter Sturm, Suresh K. Lodha - In CVPR , 2005
"... We consider the problem of calibrating a highly generic imaging model, that consists of a non-parametric association of a projection ray in 3D to every pixel in an image. Previous calibration approaches for this model do not seem to be directly applicable for cameras with large fields of view and no ..."
Abstract - Cited by 28 (7 self) - Add to MetaCart
and non-central cameras. In this paper, we describe a complete calibration approach that should in principle be able to handle any camera that can be described by the generic imaging model. Initial calibration is performed using multiple images of overlapping calibration grids simultaneously
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