Estimation of strain elastography from ultrasound radio-frequency data by utilizing analytic gradient of the similarity metric

M Omidyeganeh, Y Xiao, MO Ahmad… - IEEE transactions on …, 2017 - ieeexplore.ieee.org
analytically derive the derivative of the dissimilarity metric with respect to the strain using the
chain rule, and therefore, can use an efficient gradient-… NCC as our similarity metric. NCC is, …

[HTML][HTML] Euclidean distance as a similarity metric for principal component analysis

KL Elmore, MB Richman - Monthly weather review, 2001 - journals.ametsoc.org
… Depending on what underlying structure the analyst wishes to reveal, similarity matrices can
gradients (both the gradient and the direction of the gradient) within the original data fields. …

Generating images with perceptual similarity metrics based on deep networks

A Dosovitskiy, T Brox - Advances in neural information …, 2016 - proceedings.neurips.cc
… , which we call deep perceptual similarity metrics (DeePSiM), … This metric reflects perceptual
similarity of images much better … behavior and provide strong gradients during training, we …

Path sample-analytic gradient estimators for stochastic binary networks

A Shekhovtsov, V Yanush… - Advances in neural …, 2020 - proceedings.neurips.cc
… ever so often define the lacking gradients in these models in a heuristic … Estimating gradients
in SBNs is the main problem that we … The cosine similarity metric measured in Fig. 3 is more …

Supervised metric learning to rank for retrieval via contextual similarity optimization

C Liao, T Tsiligkaridis, B Kulis - International Conference on …, 2023 - proceedings.mlr.press
… We analytically justify this optimization approach in Section … gradients works better for
optimizing contextual similarity. Unsupervised Metric Learning The concept of contextual similarity

Perceptual rate-distortion optimization using structural similarity index as quality metric

YH Huang, TS Ou, PY Su… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
metric allows the RD model to be determined analytically, as indicated by (10) and (11). This
nice feature, however, is lost when the traditional distortion metric … iterative gradient descent …

On nonmetric similarity search problems in complex domains

T Skopal, B Bustos - ACM Computing Surveys (CSUR), 2011 - dl.acm.org
… many similarities that were not metrics—we call them nonmetric similarity functions. In this
article we survey domains employing nonmetric functions for effective similarity search, and …

[HTML][HTML] Analytic gradients for the single-reference driven similarity renormalization group second-order perturbation theory

S Wang, C Li, FA Evangelista - The Journal of Chemical Physics, 2019 - pubs.aip.org
… We derive and implement analytic energy gradients for the single-reference driven similarity
… equations does not introduce formal difficulties in the gradient theory. We apply the DSRG-…

Representation of structure in similarity data: Problems and prospects

RN Shepard - Psychometrika, 1974 - Springer
… or gradient method to minimize the chosen measure of departure from monotonicity. This is
not because gradient … In fact the gradient method has two rather frustrating properties. First, …

On the mathematical properties of the structural similarity index

D Brunet, ER Vrscay, Z Wang - IEEE Transactions on Image …, 2011 - ieeexplore.ieee.org
Since its introduction in 2004, the structural similarity (SSIM) … ) metrics based on the important
ingredients of SSIM. We then show that such modified measures are valid distance metrics