Software reliability growth models with normal failure time distributions

H Okamura, T Dohi, S Osaki - Reliability Engineering & System Safety, 2013 - Elsevier
This paper proposes software reliability growth models (SRGM) where the software failure
time follows a normal distribution. The proposed model is mathematically tractable and has …

Burr-type NHPP-based software reliability models and their applications with two type of fault count data

S Li, T Dohi, O Hiroyuki - Journal of Systems and Software, 2022 - Elsevier
In this paper, we summarize the so-called Burr-type software reliability models (SRMs)
based on the non-homogeneous Poisson process (NHPP) and comprehensively evaluate …

SRATS: Software reliability assessment tool on spreadsheet (Experience report)

H Okamura, T Dohi - 2013 IEEE 24th international symposium …, 2013 - ieeexplore.ieee.org
This paper presents a software reliability assessment tool which is built as a Microsoft Excel
AddIn. The tool handles 11 types of software reliability growth models (SRGMs) and easily …

Using non‐homogeneous Poisson models with multiple change‐points to estimate the number of ozone exceedances in Mexico City

JA Achcar, ER Rodrigues, G Tzintzun - Environmetrics, 2011 - Wiley Online Library
In this paper, we consider some non‐homogeneous Poisson models to estimate the
probability that an air quality standard is exceeded a given number of times in a time interval …

An analysis of airport noise data using a non-homogeneous Poisson model with a change-point

C Guarnaccia, J Quartieri, C Tepedino, ER Rodrigues - Applied Acoustics, 2015 - Elsevier
In this work, a non-homogeneous Poisson model is considered to study the behaviour of
airport noise levels. The model is used to count the number of times that the noise level …

A multi-factor software reliability model based on logistic regression

H Okamura, Y Etani, T Dohi - 2010 IEEE 21st International …, 2010 - ieeexplore.ieee.org
This paper proposes a multi-factor software reliability model based on logistic regression
and its effective statistical parameter estimation method. The proposed parameter estimation …

Estimating the number of ozone peaks in Mexico City using a non‐homogeneous Poisson model

JA Achcar, AA Fernández‐Bremauntz… - … : The official journal …, 2008 - Wiley Online Library
In this paper, we consider the problem of estimating the number of times an air quality
standard is exceeded in a given period of time. A non‐homogeneous Poisson model is …

Are infinite-failure NHPP-based software reliability models useful?

S Li, T Dohi, H Okamura - Software, 2022 - mdpi.com
In the literature, infinite-failure software reliability models (SRMs), such as Musa-Okumoto
SRM (1984), have been demonstrated to be effective in quantitatively characterizing …

Phase-type software reliability model: parameter estimation algorithms with grouped data

H Okamura, T Dohi - Annals of Operations Research, 2016 - Springer
This paper introduces a phase-type software reliability model (PH-SRM) and develops
parameter estimation algorithms with grouped data. The PH-SRM is one of the most flexible …

Modeling environmental noise exceedances using non-homogeneous Poisson processes

C Guarnaccia, J Quartieri, JM Barrios… - The Journal of the …, 2014 - pubs.aip.org
In this work a non-homogeneous Poisson model is considered to study noise exposure. The
Poisson process, counting the number of times that a sound level surpasses a threshold, is …