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Results 1 - 10
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293
A database and evaluation methodology for optical flow
- In Proceedings of the IEEE International Conference on Computer Vision
, 2007
"... The quantitative evaluation of optical flow algorithms by Barron et al. (1994) led to significant advances in performance. The challenges for optical flow algorithms today go beyond the datasets and evaluation methods proposed in that paper. Instead, they center on problems associated with complex n ..."
Abstract
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Cited by 407 (22 self)
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by Barron et al., we compute the absolute flow endpoint error, measures for frame interpolation error, improved statistics, and results at motion discontinuities and in textureless regions. In October 2007, we published the performance of several well-known methods on a preliminary version of our data
Dumb money: Mutual fund flows and the cross section of stock returns,
- Journal of Financial Economics,
, 2008
"... We thank Nicholas Barberis and Judith Chevalier for helpful comments. We thank Breno Schmidt for research assistance. ABSTRACT We use mutual fund flows as a measure for individual investor sentiment for different stocks, and find that high sentiment predicts low future returns. Fund flows are dumb ..."
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Cited by 103 (4 self)
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We thank Nicholas Barberis and Judith Chevalier for helpful comments. We thank Breno Schmidt for research assistance. ABSTRACT We use mutual fund flows as a measure for individual investor sentiment for different stocks, and find that high sentiment predicts low future returns. Fund flows are dumb
Absolute plate velocities from seismic anisotropy: Importance of correlated errors
"... Abstract The errors in plate motion azimuths inferred from shear wave splitting beneath any one tectonic plate are shown to be correlated with the errors of other azimuths from the same plate. To account for these correlations, we adopt a two-tier analysis: First, find the pole of rotation and conf ..."
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Cited by 1 (0 self)
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Abstract The errors in plate motion azimuths inferred from shear wave splitting beneath any one tectonic plate are shown to be correlated with the errors of other azimuths from the same plate. To account for these correlations, we adopt a two-tier analysis: First, find the pole of rotation
Title: Fast Measurements of Absolute Thermal Conductivity Excluding Thermal Contact Resistance Errors
"... Two-Thickness and Multi-Thickness procedures [1] used in LaserComp’s FOX50 Heat-Flow-Meter instruments enable the total exclusion of thermal contact resistance. Measurements without taking thermal contact resistance into account may result in very large errors (as much as hundreds percent in case of ..."
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Two-Thickness and Multi-Thickness procedures [1] used in LaserComp’s FOX50 Heat-Flow-Meter instruments enable the total exclusion of thermal contact resistance. Measurements without taking thermal contact resistance into account may result in very large errors (as much as hundreds percent in case
Time-resolved absolute velocity quantification with projections
- Magn Reson Med
"... Quantitative information on time-resolved blood velocity along the femoral/popliteal artery can provide clinical information on peripheral arterial disease and complement MR angiography since not all stenoses are hemodynamically significant. The key disadvantages of the most widely used approach to ..."
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Cited by 1 (0 self)
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to time-resolve pulsatile blood flow by cardiac-gated velocity-encoded gradient-echo imaging are gating errors and long acquisition time. Here we demonstrate a rapid non-triggered method that quantifies absolute velocity on the basis of phase difference between successive velocity-encoded projections
ERRORS IN BOILER EFFICIENCY STANDARDS
"... This paper presents both criticism and suggested changes to boiler efficiency standards associated with fossil-fired steam generators. These standards include the widely used ASME PTC 4.1 and DIN 1942, and their replacements ASME PTC 4:2008 and the European EN 12952-15. For these standards it is use ..."
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it is useful to review both old and new. The chief criticism lies with inconsistent application of thermodynamic principles. Conceptual errors are made with reference temperatures and with shaft powers. This paper advocates for the Input/Loss Method. When using computed fuel flow as a touchstone, it becomes
Volume 2, Number2, May2002 pp. 185–204 ANALYSIS OF UPSCALING ABSOLUTE PERMEABILITY
"... Abstract. Flow based upscaling of absolute permeability has become an important step in practical simulations of flow through heterogeneous formations. The central idea is to compute upscaled, grid-block permeability from fine scale solutions of the flow equation. Such solutions can be either local ..."
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Abstract. Flow based upscaling of absolute permeability has become an important step in practical simulations of flow through heterogeneous formations. The central idea is to compute upscaled, grid-block permeability from fine scale solutions of the flow equation. Such solutions can be either local
Numerical Subgrid Upscaling Of Two-Phase Flow In Porous Media
- in porous media, Lecture Notes in Physics
, 1999
"... We present an approach and numerical results for scaling up ne grid information to coarse scales in an approximation to a nonlinear parabolic system governing two-phase ow in porous media. The technique allows upscaling of the usual parameters porosity and relative and absolute permeabilities, and a ..."
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Cited by 33 (5 self)
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We present an approach and numerical results for scaling up ne grid information to coarse scales in an approximation to a nonlinear parabolic system governing two-phase ow in porous media. The technique allows upscaling of the usual parameters porosity and relative and absolute permeabilities
Residual Error Estimate for the Finite Volume Method
, 1999
"... Numerical simulation of fluid flows has received a wide acceptance in the industrial environment in recent years. If the results of simulations are to be used with confidence, it is necessary to provide a measure of their accuracy. The numerical accuracy of a simulation depends on the control of ..."
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Cited by 2 (0 self)
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(FVM), measuring the absolute magnitude of the discretisation error, is presented. Unlike the more traditional truncation error estimates, the Residual Error Estimate is based on the cell residual, similar to the popular error estimates in the Finite Element community. An appropriate normalisation
Matrix Scaling by Network Flow
- IN PROCEEDINGS OF THE ACMSIAM SYMPOSIUM ON DISCRETE ALGORITHMS
, 2007
"... A given nonnegative n × n matrix A =(aij) is to be scaled, by multiplying its rows and columns by unknown positive multipliers λi and µj, such that the resulting matrix (aijλiµj) has specified row and column sums ri and sj. We give an algorithm that achieves the desired row and column sums with a ma ..."
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Cited by 7 (1 self)
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maximum absolute error ε in O(n4 (log n +logh ε)) steps, where h is the overall total of the result matrix. Our algorithm is a scaling algorithm. It solves a sequence of more and more refined discretizations. The discretizations are minimum-cost network flow problems with convex piecewise linear costs
Results 1 - 10
of
293
