Ensemble binary segmentation for irregularly spaced data with change-points
نویسندگان
چکیده
Abstract We propose a new technique for consistent estimation of the number and locations change-points in structure an irregularly spaced time series. The core segmentation procedure is ensemble binary method (EBS), which large multiple change-point detection tasks using are applied on sub-samples data differing lengths, then results combined to create overall answer. do not restrict total series can have, therefore, our proposed works well when spacings between short. Our main statistic time-varying autoregressive conditional duration model we apply transformation process order decorrelate it. To examine performance EBS provide simulation study various types scenarios. A proof consistency also provided. methodology implemented R package , available download from CRAN.
منابع مشابه
Multiresolution Analysis Adapted to Irregularly Spaced Data
This paper investigates the mathematical background of multiresolution analysis in the specific context where the signal is represented by irregularly sampled data at known locations. The study is related to the construction of nested piecewise polynomial multiresolution spaces represented by their corresponding orthonormal bases. Using simple spline basis orthonormalization procedures involves...
متن کاملA test for stationarity for irregularly spaced spatial data
Abstract The analysis of spatial data is based on a set of assumptions, which in practice need to be checked. A commonly used assumption is that the spatial random field is second order stationary. In this paper, a test for spatial stationarity for irregularly sampled data is proposed. The test is based on a transformation of the data (a type of Fourier transform), where the correlations betwee...
متن کاملIrregularly Spaced Time Series Data with Time Scale Measurement Error
This project can be mainly divided into two sections. In the first section it attempts to model an irregularly spaced time series data where time scale is being measured with a measurement error. Modelling an irregularly spaced time series data alone is quite challenging as traditional time series techniques only capture equally/regularly spaced time series data. In addition to that, the measur...
متن کاملApproximate likelihood for large irregularly spaced spatial data.
Likelihood approaches for large irregularly spaced spatial datasets are often very difficult, if not infeasible, to implement due to computational limitations. Even when we can assume normality, exact calculations of the likelihood for a Gaussian spatial process observed at n locations requires O(n(3)) operations. We present a version of Whittle's approximation to the Gaussian log likelihood fo...
متن کاملBayesian smoothing of irregularly-spaced data using Fourier basis functions
The spectral representation of Gaussian processes via the Fourier basis provides a computationally efficient specification of spatial surfaces and nonparametric regression functions in various statistical models. I describe the representation in detail and introduce the spectralGP R library for computations. Because of the large number of basis coefficients, some form of shrinkage is necessary;...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Korean Statistical Society
سال: 2021
ISSN: ['2005-2863', '1226-3192', '1876-4231']
DOI: https://doi.org/10.1007/s42952-021-00120-w