Match!
Pauline Coolen-Schrijner
Durham University
63Publications
16H-index
809Citations
Publications 63
Newest
#1Pauline Coolen-Schrijner (Durham University)H-Index: 16
We discuss some basic maintenance models for stochastically deteriorating systems. Optimization of maintenance models with respect to a certain objective function gives the optimal maintenance policy over a predefined time horizon. We consider models involving repair, inspection, and replacement actions. Keywords: maintenance models; stochastically deteriorating systems; model characteristics; single-unit systems; multiunit systems
1 CitationsSource
#1Frank P. A. Coolen (Durham University)H-Index: 24
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
This article presents several main aspects of Bayesian reliability demonstration, together with a concise discussion of key contributions to this topic. Keywords: attribute testing; zero-failure data; prior distribution; reliability demonstration
3 CitationsSource
#1Frank P. A. Coolen (Durham University)H-Index: 24
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
Last.Faiza F. ElkhafifiH-Index: 3
view all 4 authors...
Nonparametric predictive inference (NPI) is a powerful frequentist statistical framework based only on an exchangeability assumption for future and past observations, made possible by the use of lower and upper probabilities. In this article, NPI is presented for ordinal data, which are categorical data with an ordering of the categories. The method uses a latent variable representation of the observations and categories on the real line. Lower and upper probabilities for events involving the ne...
7 CitationsSource
#1Tahani Coolen-Maturi (Durham University)H-Index: 9
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
Last.Frank P. A. Coolen (Durham University)H-Index: 24
view all 3 authors...
Measuring the accuracy of diagnostic tests is crucial in many application areas, including medicine, health care, and data mining. Good methods for determining diagnostic accuracy provide useful guidance on selection of patient treatment, and the ability to compare different diagnostic tests has a direct impact on quality of care. In this paper nonparametric predictive inference (NPI) for accuracy of diagnostic tests with binary test results is presented and discussed, together with methods for ...
16 CitationsSource
#1Tahani Coolen-Maturi (Durham University)H-Index: 9
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
Last.Frank P. A. Coolen (Durham University)H-Index: 24
view all 3 authors...
We consider lifetime experiments to compare units from different groups, where the units’ lifetimes may be right censored. Nonparametric predictive inference for comparison of multiple groups is presented, in particular lower and upper probabilities for the event that a specific group will provide the largest next lifetime. We include the practically relevant consideration that the overall lifetime experiment may be terminated at an early stage, leading to simultaneous right-censoring of all uni...
10 CitationsSource
#1Tahani Coolen-Maturi (UKC: University of Kent)H-Index: 9
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
Last.Frank P. A. Coolen (Durham University)H-Index: 24
view all 3 authors...
Measuring the accuracy of diagnostic tests is crucial in many application areas including medicine and health care. Good methods for determining diagnostic accuracy provide useful guidance on selection of patient treatment, and the ability to compare different diagnostic tests has a direct impact on quality of care. In this paper Nonparametric Predictive Inference (NPI) methods for accuracy of diagnostic tests with continuous test results are presented and discussed. For such tests, Receiver Ope...
16 CitationsSource
#1Rachel Forrester-Jones (UKC: University of Kent)H-Index: 15
#2John Carpenter (UoB: University of Bristol)H-Index: 22
Last.David WooffH-Index: 15
view all 9 authors...
BackgroundWhile community care is now well established in England, the development and maintenance of social networks of people with long-term mental illness remains a major challenge to services.AimsTo investigate the size of the social networks of people with long-term mental illness and the types of social support they receive in relation to their age and accommodation.SampleThirty-nine men and 46 women (mean age: 61 years; range: 38–88). Forty nine (60%) were 65 years or under and 32 (40%) w...
22 CitationsSource
#1Tahani Coolen-Maturi (Durham University)H-Index: 9
#2Pauline Coolen-Schrijner (Durham University)H-Index: 16
Last.Frank P. A. Coolen (Durham University)H-Index: 24
view all 3 authors...
Nonparametric predictive inference (NPI) is a statistical approach based on few assumptions about probability distributions, with inferences based on data. NPI assumes exchangeability of random quantities, both related to observed data and future observations, and uncertainty is quantified using lower and upper probabilities. In this paper, units from several groups are placed simultaneously on a lifetime experiment and times-to-failure are observed. The experiment may be ended before all units ...
6 CitationsSource
#1Richard Crossman (Durham University)H-Index: 7
Last.Frank P. A. Coolen (Durham University)H-Index: 24
view all 3 authors...
We consider the suggestion that the shape of a hazard rate can be predicted from the quasi-stationary distribution of the process, demonstrate that this hypothesis requires specific conditions, and both eliminate and suggest methods by means of which these predictions might be made.
Source
#1Rebecca M. BakerH-Index: 4
Last.Thomas AugustinH-Index: 20
view all 4 authors...
1234567