Results 231 to 240 of about 158,268 (326)

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

Journal of Time Series Analysis, EarlyView.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth, Gregory Rice, Jeremy VanderDoes   +2 more
wiley   +1 more source

Splitting unramified Brauer classes by abelian torsors and the period-index problem. [PDF]

Math Ann
Huybrechts D, Mattei D.
europepmc   +1 more source

Tensor Changepoint Detection and Eigenbootstrap

Journal of Time Series Analysis, EarlyView.
ABSTRACT Tensor data consisting of multivariate outcomes over the items and across the subjects with longitudinal and cross‐sectional dependence are considered. A completely distribution‐free and tweaking‐parameter‐free detection procedure for changepoints at different locations is designed, which does not require training data.
Michal Pešta, Barbora Peštová, Martin Romaňák   +2 more
wiley   +1 more source

On the hypercomplex numbers and normed division algebras in all dimensions: A unified multiplication. [PDF]

PLoS One
Singh P, Gupta A, Joshi SD.
europepmc   +1 more source

Online Jump and Kink Detection in Segmented Linear Regression: Statistical Optimality Meets Computational Efficiency

Journal of Time Series Analysis, EarlyView.
ABSTRACT We consider the problem of sequential (online) estimation of a single change point in a piecewise linear regression model under a Gaussian setup. We demonstrate that certain CUSUM‐type statistics attain the minimax optimal rates for localizing the change point.
Annika Hüselitz, Housen Li, Axel Munk
wiley   +1 more source

Expansion of stereotactic work envelope using transformation matrices and geometric algebra for neurosurgery. [PDF]

Biomed Eng Lett
Sharaf B, Lewis S, Choung D, Goyal A, Scheitler KM, Hong LS, Blaha CD, Hanna B, Chang K, Yuen J, Oh Y, Shin H, Grewal S, Chang JW, Miller K, Lee KH.   +15 more
europepmc   +1 more source

Division in Douglas algebras.

Michigan Mathematical Journal, 1982
openaire   +2 more sources

Macroscopic Market Making Games

Mathematical Finance, EarlyView.
ABSTRACT Building on the macroscopic market making framework as a control problem, this paper investigates its extension to stochastic games. In the context of price competition, each agent is benchmarked against the best quote offered by the others. We begin with the linear case.
Ivan Guo, Shijia Jin
wiley   +1 more source

Development of a Computerized Adaptive Assessment and Learning System for Mathematical Ability Based on Cognitive Diagnosis. [PDF]

J Intell
Zhang Y, Zhang L, Zhang H, Wu X.
europepmc   +1 more source

An isomorphism problem for objects in categories related to finite dimensional division algebras having henselian valuations

V. I. Yanchevskiĭ
openalex   +2 more sources