Results 41 to 50 of about 2,194,803 (325)

Information Mandala: Statistical Distance Matrix with Clustering [PDF]

open access: yesIEEE Access, 2021
<p>In machine learning, observation features are measured in a metric space to obtain their distance function for optimization. Given similar features that are statistically sufficient as a population, a statistical distance between two probability distributions can be calculated for more precise learning. Provided the observed features are multi-
openaire   +5 more sources

Distance Matrix of a Class of Completely Positive Graphs: Determinant and Inverse

open access: yesSpecial Matrices, 2020
A real symmetric matrix A is said to be completely positive if it can be written as BBt for some (not necessarily square) nonnegative matrix B. A simple graph G is called a completely positive graph if every matrix realization of G that is both ...
Das Joyentanuj   +2 more
doaj   +1 more source

Enhancing timbre model using MFCC and its time derivatives for music similarity estimation

open access: yes, 2012
One of the popular methods for content-based music similarity estimation is to model timbre with MFCC as a single multivariate Gaussian with full covariance matrix, then use symmetric Kullback-Leibler divergence.
de leon, Franz, Martinez, Kirk
core   +1 more source

On Maximal Distance Energy

open access: yesMathematics, 2021
Let G be a graph of order n. If the maximal connected subgraph of G has no cut vertex then it is called a block. If each block of graph G is a clique then G is called clique tree.
Shaowei Sun   +2 more
doaj   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

open access: yesFEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii   +8 more
wiley   +1 more source

Support Values for Genome Phylogenies

open access: yesLife, 2016
We have recently developed a distance metric for efficiently estimating the number of substitutions per site between unaligned genome sequences. These substitution rates are called “anchor distances” and can be used for phylogeny reconstruction.
Fabian Klötzl, Bernhard Haubold
doaj   +1 more source

Basic Input Data for Audiences’ Geotargeting by Destinations’ Partial Accessibility: Notes from Slovakia

open access: yesData, 2023
The presented notes focus partially on two of the basic elements (accessibility and image) of any managed tourism destination from the perspective of basic ETL processes over open and third-party data.
Csaba Sidor   +2 more
doaj   +1 more source

QCD Radiative Corrections to the Leptonic Decay Rate of the B_c Meson

open access: yes, 1995
The QCD radiative corrections to the leptonic decay rate of the $B_c$ meson are calculated using the formalism of nonrelativistic QCD (NRQCD) to separate short-distance and long-distance effects.
A. De Rújula   +23 more
core   +1 more source

The role of fibroblast growth factors in cell and cancer metabolism

open access: yesFEBS Letters, EarlyView.
Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley   +1 more source

On Matrix Nearness Problems: Distance to Delocalization [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2015
Summary: In this paper we introduce a new matrix nearness problem that is intended to generalize the distance to instability. Due to its applicability in analyzing the robustness of eigenvalues with respect to the arbitrary localization sets (domains) in the complex plane, we call it the distance to delocalization.
Vladimir R. Kostić   +2 more
openaire   +3 more sources

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