Roelof Helmers

Publication List Details

Period

1988 - 2007

Number

25

Co-Authors

Saddlepoint Approximations to the Trimmed Mean (2007)

R. Helmers, G. Qin, W. Zhou, Roelof Helmers, Bing-yi Jing, ...

CWI is a founding member of ERCIM, the European Research Consortium for Informatics and Mathematics. CWI's research has a theme-oriented structure and is grouped into four clusters. Listed below...

Saddlepoint approximations to the trimmed mean (2004)

Helmers, Roelof, Jing, Bing-Yi, Qin, Gengsheng, Zhou, Wang

Saddlepoint approximations for the trimmed mean and the studentized trimmed mean are established. Some numerical evidence on the quality of our saddlepoint approximations is also included.

Saddlepoint Approximations to the Trimmed Mean (2002)

R. Helmers, G. Qin, W. Zhou, Roelof Helmers, Bing-yi Jing, ...

CWI is a founding member of ERCIM, the European Research Consortium for Informatics and Mathematics. CWI's research has a theme-oriented structure and is grouped into four clusters. Listed below...

Statistical Properties of a Kernel Type Estimator of the Intensity Function of a Cyclic Poisson Process (2001)

R. Helmers, I W. Mangku, R. Zitikis, Roelof Helmers

and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of

On estimation of Poisson intensity functions (1999)

R. Helmers, I W. Mangku, Mathematisch Centrum (smc, The Dutch Foundation, Roelof Helmers, I Wayan Mangku

and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of

On Estimation of Poisson Intensity Functions

Roelof Helmers, Ričardas Zitikis

Poisson process, point process, linear Poisson process, modulated Poisson process,

Statistical properties of a kernel-type estimator of the intensity function of a cyclic Poisson process

Helmers, Roelof, Mangku, I. Wayan, Zitikis, Ricardas

We consider a kernel-type nonparametric estimator of the intensity function of a cyclic Poisson process when the period is unknown. We assume that only a single realization of the Poisson process is...

Consistent estimation of the intensity function of a cyclic Poisson process

Helmers, Roelof, Wayan Mangku, I., Zitikis, Ricardas

We construct and investigate a consistent kernel-type nonparametric estimator of the intensity function of a cyclic Poisson process when the period is unknown. We do not assume any particular...

Confidence regions for the intensity function of a cyclic Poisson process

Roelof Helmers, Qiying Wang, Ričardas Zitikis

Poisson process, Intensity function, Cyclic intensity function, Periodic intensity function, Kernel density estimation, Confidence intervals, Confidence bands, Extreme value distribution, Gumbel...

Estimating the intensity of a cyclic Poisson process in the presence of linear trend

Roelof Helmers, I. Mangku

Cyclic Poisson process, Intensity function, Linear trend, Nonparametric estimation, Consistency, Bias, Variance, Mean-squared error,