Li, Xiaoxue Anderson, Stewart J Shiffman, Saul Zhang, Bo
Published in
Journal of applied statistics
Ecological momentary assessment (EMA) studies investigate intensive repeated observations of the current behavior and experiences of subjects in real time. In particular, such studies aim to minimize recall bias and maximize ecological validity, thereby strengthening the investigation and inference of microprocesses that influence behavior in real-...
Li, Cong Zhang, Haixiang Wang, Dehui
Published in
Journal of applied statistics
To analyse count time series data inflated at the r + 1 values { 0 , 1 , … , r } , we propose a new first-order integer-valued autoregressive process with r-geometrically inflated Poisson innovations. Some statistical properties together with conditional maximum likelihood estimate are provided. For the purpose of statistical monitoring, we focus o...
Tahir, M H Hussain, M Adnan Cordeiro, Gauss M
Published in
Journal of applied statistics
We propose a new flexible generalized family (NFGF) for constructing many families of distributions. The importance of the NFGF is that any baseline distribution can be chosen and it does not involve any additional parameters. Some useful statistical properties of the NFGF are determined such as a linear representation for the family density, analy...
Anastasopoulou, Maria Rakitzis, Athanasios C
Published in
Journal of applied statistics
In this work, we develop and study upper and lower one-sided EWMA control charts for monitoring correlated counts with finite range. Often in practice, data of that kind can be adequately described by a first-order binomial or beta-binomial autoregressive model. Especially, when there is evidence that data demonstrate extra-binomial variation, the ...
Xiong, Peihan Zhuang, Weiwei Qiu, Guoxin
Published in
Journal of applied statistics
In this paper, we first present a characterization of exponential distribution based on the extropy of record values and next introduce a goodness-of-fit test for exponentiality. Monte Carlo simulation is used to compute the critical values of our proposed test for different sample sizes and significance levels. To show the advantage of the propose...
Arachchige, Chandima N P G Prendergast, Luke A Staudte, Robert G
Published in
Journal of applied statistics
The coefficient of variation (CV) is commonly used to measure relative dispersion. However, since it is based on the sample mean and standard deviation, outliers can adversely affect it. Additionally, for skewed distributions the mean and standard deviation may be difficult to interpret and, consequently, that may also be the case for the CV . Here...
Stark, Florian Otto, Sven
Published in
Journal of applied statistics
This paper is concerned with testing and dating structural breaks in the dependence structure of multivariate time series. We consider a cumulative sum (CUSUM) type test for constant copula-based dependence measures, such as Spearman's rank correlation and quantile dependencies. The asymptotic null distribution is not known in closed form and criti...
Baíllo, A Chacón, J E
Published in
Journal of applied statistics
The home range of an animal describes the geographic area where this individual spends most of the time while doing its usual activities. From a statistical viewpoint, the problem of home range estimation can be considered as a set estimation one. In the ecological literature, there are a variety of home range estimators. We address the open questi...
Fang, Zijian Zhao, Peng Xu, Maochao Xu, Shouhuai Hu, Taizhong Fang, Xing
Published in
Journal of applied statistics
Modeling cyber threats, such as the computer malicious software (malware) propagation dynamics in cyberspace, is an important research problem because models can deepen our understanding of dynamical cyber threats. In this paper, we study the statistical modeling of the macro-level evolution of dynamical cyber attacks. Specifically, we propose a Ba...
Jiménez, José L
Published in
Journal of applied statistics
Proportional hazards are a common assumption when designing confirmatory clinical trials in oncology. With the emergence of immunotherapy and novel targeted therapies, departure from the proportional hazard assumption is not rare in nowadays clinical research. Under non-proportional hazards, the hazard ratio does not have a straightforward clinical...
