Results 81 to 90 of about 1,375,989 (278)
DiffRayFlow: A Differentiable Freeform Optical Design Engine Based on Discrete Optimal Transport
PhotonicsFreeform surfaces play a critical role in complex light-field modulation. However, traditional geometric mapping and standard optimization methods are limited by computational cost and convergence instability in large-scale ray tracing and complex ...
Liang Wang +4 more
doaj +1 more source
Diffeomorphic density matching by optimal information transport
, 2015 We address the following problem: given two smooth densities on a manifold, find an optimal diffeomorphism that transforms one density into the other.
Bauer, Martin +2 more
core +2 more sources
Optimal Transportation Problem by Stochastic Optimal Control [PDF]
SIAM Journal on Control and Optimization, 2008 We address an optimal mass transportation problem by means of optimal stochastic control. We consider a stochastic control problem which is a natural extension of the Monge-Kantorovich problem. Using a vanishing viscosity argument we provide a probabilistic proof of two fundamental results in mass transportation: the Kantorovich duality and the graph ...
Mikami, Toshio, Thieullen, Michele
openaire +3 more sources
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
MathematicsIdentifying critical infrastructure in transportation networks requires metrics that can capture both the topological structure and how demand is redistributed during disruptions.
Iman Seyedi +2 more
doaj +1 more source
Towards optimal running times for optimal transport
Operations Research LettersIn this work, we provide faster algorithms for approximating the optimal transport distance, e.g. earth mover's distance, between two discrete probability distributions $μ, ν\in Δ^n$. Given a cost function $C : [n] \times [n] \to \mathbb{R}_{\geq 0}$ where $C(i,j) \leq 1$ quantifies the penalty of transporting a unit of mass from $i$ to $j$, we show ...
Jose Blanchet +3 more
openaire +2 more sources
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
SIDDA: SInkhorn Dynamic Domain Adaptation for image classification with equivariant neural networks
Machine Learning: Science and TechnologyModern neural networks (NNs) often do not generalize well in the presence of a ‘covariate shift’; that is, in situations where the training and test data distributions differ, but the conditional distribution of classification labels given the data ...
Sneh Pandya +4 more
doaj +1 more source
Introduction to Optimal Transport Theory
, 2009 These notes constitute a sort of Crash Course in Optimal Transport Theory. The different features of the problem of Monge-Kantorovitch are treated, starting from convex duality issues. The main properties of space of probability measures endowed with the
Santambrogio, Filippo
core +2 more sources