Results 31 to 40 of about 3,294 (168)

Minimax quantum state estimation under Bregman divergence [PDF]

open access: yesQuantum, 2019
We investigate minimax estimators for quantum state tomography under general Bregman divergences. First, generalizing the work of Koyama et al. [Entropy 19, 618 (2017)] for relative entropy, we find that given any estimator for a quantum state, there ...
Maria Quadeer   +2 more
doaj   +1 more source

The Burbea-Rao and Bhattacharyya centroids [PDF]

open access: yes, 2011
We study the centroid with respect to the class of information-theoretic Burbea-Rao divergences that generalize the celebrated Jensen-Shannon divergence by measuring the non-negative Jensen difference induced by a strictly convex and differentiable ...
Frank Nielsen   +2 more
core   +2 more sources

Information Geometry of Positive Measures and Positive-Definite Matrices: Decomposable Dually Flat Structure

open access: yesEntropy, 2014
Information geometry studies the dually flat structure of a manifold, highlighted by the generalized Pythagorean theorem. The present paper studies a class of Bregman divergences called the (ρ,τ)-divergence.
Shun-ichi Amari
doaj   +1 more source

Cost-sensitive learning based on Bregman divergences [PDF]

open access: yesMachine Learning, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Santos-Rodríguez, Raúl   +3 more
openaire   +4 more sources

Domain Adaptation via Bregman divergence minimization [PDF]

open access: yesScientia Iranica, 2021
In recent years, Fisher linear discriminant analysis (FLDA) based classifi- cation is one of the most successful approaches and has been shown effective performance in different classification tasks. However, when the learning data (source domain) have a different distribution against the testing data (tar- get domain), the FLDA-based models may not be ...
Mozhdeh Zandifar   +2 more
openaire   +1 more source

Beta-Divergence as a Subclass of Bregman Divergence [PDF]

open access: yesIEEE Signal Processing Letters, 2011
In this paper, we present a complete proof that the β-divergence is a particular case of Bregman divergence. This little-known result makes it possible to straightforwardly apply theorems about Bregman divergences to β-divergences. This is of interest for numerous applications since these divergences are widely used, for instance in non-negative matrix
Romain Hennequin   +2 more
openaire   +1 more source

Families of Alpha- Beta- and Gamma- Divergences: Flexible and Robust Measures of Similarities

open access: yesEntropy, 2010
In this paper, we extend and overview wide families of Alpha-, Beta- and Gamma-divergences and discuss their fundamental properties. In literature usually only one single asymmetric (Alpha, Beta or Gamma) divergence is considered.
Andrzej Cichocki, Shun-ichi Amari
doaj   +1 more source

Sum decomposition of divergence into three divergences

open access: yes, 2018
Divergence functions play a key role as to measure the discrepancy between two points in the field of machine learning, statistics and signal processing. Well-known divergences are the Bregman divergences, the Jensen divergences and the f-divergences. In
Nishiyama, Tomohiro
core   +1 more source

Bregman–Hausdorff Divergence: Strengthening the Connections Between Computational Geometry and Machine Learning

open access: yesMachine Learning and Knowledge Extraction
The purpose of this paper is twofold. On a technical side, we propose an extension of the Hausdorff distance from metric spaces to spaces equipped with asymmetric distance measures.
Tuyen Pham   +2 more
doaj   +1 more source

Probabilistic Forecasts: Scoring Rules and Their Decomposition and Diagrammatic Representation via Bregman Divergences

open access: yesEntropy, 2015
A scoring rule is a device for evaluation of forecasts that are given in terms of the probability of an event. In this article we will restrict our attention to binary forecasts.
Gareth Hughes, Cairistiona F.E. Topp
doaj   +1 more source

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