Results 31 to 40 of about 1,009,431 (281)

Multivariate analysis in vector time series [PDF]

open access: yes, 2000
This paper reviews the applications of classical multivariate techniques for discrimination, clustering and dimension reduction for time series data. It is shown that the discrimination problem can be seen as a model selection problem.
Galeano, Pedro, Peña, Daniel
core   +4 more sources

Fractal Analysis of Overlapping Box Covering Algorithm for Complex Networks

open access: yesIEEE Access, 2020
Due to extensive research on complex networks, fractal analysis with scale invariance is applied to measure the topological structure and self-similarity of complex networks. Fractal dimension can be used to quantify the fractal properties of the complex
Wei Zheng   +4 more
doaj   +1 more source

Hyperbolic graphs: Critical regularity and box dimension

open access: yesTransactions of the American Mathematical Society, 2019
We study fractal properties of invariant graphs of hyperbolic and partially hyperbolic skew product diffeomorphisms in dimension three. We describe the critical (either Lipschitz or at all scales H lder continuous) regularity of such graphs. We provide a formula for their box dimension given in terms of appropriate pressure functions.
Díaz, Lorenzo Justiniano   +3 more
openaire   +3 more sources

The Discrepancy of Boxes in Higher Dimension [PDF]

open access: yesDiscrete & Computational Geometry, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chazelle, B., Lvov, A.
openaire   +1 more source

Inhomogeneous self-similar sets and box dimensions

open access: yes, 2012
We investigate the box dimensions of inhomogeneous self-similar sets. Firstly, we extend some results of Olsen and Snigireva by computing the upper box dimensions assuming some mild separation conditions.
Fraser, Jonathan M.
core   +1 more source

Dimension and product structure of hyperbolic measures [PDF]

open access: yes, 1999
We prove that every hyperbolic measure invariant under a C^{1+\alpha} diffeomorphism of a smooth Riemannian manifold possesses asymptotically ``almost'' local product structure, i.e., its density can be approximated by the product of the densities on ...
Barreira, Luis   +2 more
core   +7 more sources

Box dimensions of (\timesm,\timesn)-invariant sets

open access: yesIndiana University Mathematics Journal, 2023
We study the box dimensions of sets invariant under the toral endomorphism $(x, y) \mapsto (m x \text{ mod } 1, \, n y \text{ mod } 1)$ for integers $n>m \geq 2$. The basic examples of such sets are Bedford-McMullen carpets and, more generally, invariant sets are modelled by subshifts on the associated symbolic space.
Fraser, Jonathan, Jurga, Natalia
openaire   +2 more sources

Closed Contour Fractal Dimension Estimation by the Fourier Transform [PDF]

open access: yes, 2011
This work proposes a novel technique for the numerical calculus of the fractal dimension of fractal objects which can be represented as a closed contour.
Beck   +31 more
core   +1 more source

The Role of Invasive Procedures in the Treatment of Complicated Gastrointestinal Graft‐Versus‐Host Disease in Pediatric Patients

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Gastrointestinal graft‐versus‐host disease (GI GVHD) following hematopoietic stem cell transplant is typically managed with medical therapy, but surgery and angioembolization may be warranted in selected cases with life‐threatening complications.
Gaia Brunetti   +12 more
wiley   +1 more source

Progress on Fractal Dimensions of the Weierstrass Function and Weierstrass-Type Functions

open access: yesFractal and Fractional
The Weierstrass function W(x)=∑n=1∞ancos(2πbnx) is a function that is continuous everywhere and differentiable nowhere. There are many investigations on fractal dimensions of the Weierstrass function, and the investigation of its Hausdorff dimension is ...
Yue Qiu, Yongshun Liang
doaj   +1 more source

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