Results 21 to 30 of about 301,324 (265)

A Goodness-of-Fit Test for Log-Linearity in Cox Proportional Hazards Model Under Monotonic Covariate Effects

Mathematics
The Cox proportional hazards (PH) model is widely used because it models the covariates to the hazard through a log-linear effect. However, exploring flexible effects becomes desirable within the Cox PH framework when only a monotonic relationship ...
Huan Chen, Chuan-Fa Tang
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Partial Cointegrated Vector Autoregressive Models with Structural Breaks in Deterministic Terms

Econometrics, 2019
This paper proposes a class of partial cointegrated models allowing for structural breaks in the deterministic terms. Moving-average representations of the models are given. It is then shown that, under the assumption of martingale difference innovations,
Takamitsu Kurita, Bent Nielsen
doaj   +1 more source

An innovative approach to partial discharge measurement and analysis in DC insulation systems during voltage transient and in steady state

High Voltage, 2021
Measuring partial discharges in DC insulation systems is an issue due to the lack of a reference relating the voltage waveform to the physics of discharge phenomena.
Gian Carlo Montanari, Riddhi Ghosh
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A new tumor-associated antigen prognostic scoring system for spontaneous ruptured hepatocellular carcinoma after partial hepatectomy

Cancer Biology & Medicine, 2018
Objective: Spontaneous hepatocellular carcinoma (HCC) rupture can be fatal, and hepatic resection could achieve a favorable long-term survival among all strategies of tumor rupture.
Jingjing Wu, Peng Zhu, Zhanguo Zhang, Bixiang Zhang, Chang Shu, Lin Chen, Renjie Feng, Abdoul aziz Mba'nbo koumpa, Ganxun Li, Qianyun Ge   +9 more
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ANALISIS SURVIVAL DENGAN COX PROPORTIONAL HAZARD PADA KASUS DEMAM TIFOID

Majalah Ilmiah Matematika dan Statistika, 2022
A common problem found in survival data is the presence of censored data. The length of hospitalization of Typhoid fever patients until declared cured is one of example of this data. Here, we use Cox regression model to analysis this data.
Nurul Azizah Baisaku, Jajang Jajang, Nunung Nurhayati   +2 more
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Partial mixture model for tight clustering of gene expression time-course

BMC Bioinformatics, 2008
Background Tight clustering arose recently from a desire to obtain tighter and potentially more informative clusters in gene expression studies. Scattered genes with relatively loose correlations should be excluded from the clusters.
Li Chang-Tsun, Yuan Yinyin, Wilson Roland   +2 more
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Theory of Partial Likelihood

The Annals of Statistics, 1986
This paper develops the asymptotic theory: consistency and asymptotic normality for estimators of a parameter \(\theta\) based upon partial likelihood or conditional likelihood in a rather general setting. It includes most of the results obtained in this area, among them we can quote \textit{J. D. Kalbfleisch} and \textit{D. A. Sprott} [J. R. Stat. Soc.
openaire   +2 more sources

Partial trisomy 9: prenatal diagnosis and recurrence within same family

Clinical Case Reports, 2017
Key Clinical Message Trisomy 9 can be suspected and confirmed in the prenatal period since the 11–13.6 weeks of screening. In cases of partial trisomy 9, the diagnosis is important especially to counseling the couple due to the increased likelihood of ...
Jana López‐Félix, Leticia Flores‐Gallegos, Luz Garduño‐Zarazúa, Teresa Leis‐Márquez, Luz Juárez‐García, Ricardo Meléndez‐Hernández, Ernesto Castelazo‐Morales, Dora Mayén‐Molina   +7 more
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Bayesian Inference in Auditing with Partial Prior Information Using Maximum Entropy Priors

Entropy, 2018
Problems in statistical auditing are usually one⁻sided. In fact, the main interest for auditors is to determine the quantiles of the total amount of error, and then to compare these quantiles with a given materiality fixed by the auditor, so that ...
María Martel-Escobar, Francisco-José Vázquez-Polo, Agustín Hernández-Bastida   +2 more
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Adopting New Machine Learning Approaches on Cox’s Partial Likelihood Parameter Estimation for Predictive Maintenance Decisions

Machines
The Proportional Hazards Model (PHM) under a Condition-Based Maintenance (CBM) policy is used by asset-intensive industries to predict failure rate, reliability function, and maintenance decisions based on vital covariates data.
David R. Godoy, Víctor Álvarez, Rodrigo Mena, Pablo Viveros, Fredy Kristjanpoller   +4 more
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