Results 11 to 20 of about 2,196,882 (335)

New statistical process control charts for overdispersed count data based on the Bell distribution [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2023
Poisson distribution is a popular discrete model used to describe counting information, from which traditional control charts involving count data, such as the c and u charts, have been established in the literature.
LAION L. BOAVENTURA   +4 more
doaj   +1 more source

A Combined Runs Rules Scheme for Monitoring General Inflated Poisson Processes

open access: yesMathematics, 2023
In this work, a control chart with multiple runs rules is proposed and studied in the case of monitoring inflated processes. Usually, Shewhart-type control charts for attributes do not have a lower control limit, especially when the in-control process ...
Eftychia Mamzeridou   +1 more
doaj   +1 more source

Process Monitoring Using Truncated Gamma Distribution

open access: yesStats, 2023
The time-between-events idea is commonly used for monitoring high-quality processes. This study aims to monitor the increase and/or decrease in the process mean rapidly using a one-sided exponentially weighted moving average (EWMA) chart for the ...
Sajid Ali   +3 more
doaj   +1 more source

A Markov Chain Model for Approximating the Run Length Distributions of Poisson EWMA Charts under Linear Drifts

open access: yesMathematics, 2022
In addition to monitoring the Poisson mean rate with step shifts, increasing attention has been given to monitoring Poisson processes subject to linear trends.
Honghao Zhao   +3 more
doaj   +1 more source

Designing the multivariate nonconforming proportion control charts considering the measurement error [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2021
Most qualitative characteristics cannot be easily reported numerically. In such cases, each product is inspected and usually divided into two conforming and nonconforming groups based on their qualitative characteristics.
Seyed Mohsen Ebrahimi   +1 more
doaj   +1 more source

Nonparametric Cusum Charts for Circular Data with Applications in Health Science and Astrophysics

open access: yesRevstat Statistical Journal, 2020
This paper develops non-parametric rotation invariant CUSUMs suited to the detection of changes in the mean direction as well as changes in the concentration parameter of circular data.
F. Lombard   +2 more
doaj   +1 more source

Detection Sensitivity of a Modified EWMA Control Chart with a Time Series Model with Fractionality and Integration

open access: yesEmerging Science Journal, 2022
Among the many statistical process control charts, the modified exponentially weighted moving average (EWMA) control chart has been designed to swiftly detect a small shift in a process parameter.
Piyatida Phanthuna, Yupaporn Areepong
doaj   +1 more source

Monitoring Betaine Using Interval Time Between Events Control Chart

open access: yesFrontiers in Nutrition, 2022
A generalization of moving average (MA) control chart for the exponential distribution under classical statistics is presented in this article. The designing of the MA control chart for the exponential distribution under neutrosophic statistics is also ...
Muhammad Saleem   +2 more
doaj   +1 more source

On Computing Average Common Substring Over Run Length Encoded Sequences [PDF]

open access: yesFundamenta Informaticae, 2018
The Average Common Substring (ACS) is a popular alignment-free distance measure for phylogeny reconstruction. The ACS of a sequence X[1, x] w.r.t. another sequence Y[1, y] is ACS(X, Y) =  1 x ∑ i=1 x max j lcp(X[i, x], Y[j, y]) The lcp(·, ·) of two input sequences is the length of their longest common prefix.
Hooshmand, Sahar   +3 more
openaire   +3 more sources

A New Attribute Control Chart Using Multiple Dependent State Repetitive Sampling

open access: yesIEEE Access, 2017
In this paper, a new attribute control chart using multiple-dependent state repetitive sampling is designed. The operational procedure and structure of the proposed control chart is given.
Mansour Sattam Aldosari   +2 more
doaj   +1 more source

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