Accelerated hazards model based on parametric families generalized with Bernstein polynomials.
Accelerated hazards model based on parametric families generalized with Bernstein polynomials.
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DOI:
10.1111/biom.12104
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发表时间:
2014-03
期刊:
影响因子:
1.9
通讯作者:
Zhang J
中科院分区:
文献类型:
--
作者:
Chen Y;Hanson T;Zhang J
A transformed Bernstein polynomial that is centered at standard parametric families, such as Weibull or log-logistic, is proposed for use in the accelerated hazards model. This class provides a convenient way towards creating a Bayesian non-parametric prior for smooth densities, blending the merits of parametric and non-parametric methods, that is amenable to standard estimation approaches. For example optimization methods in SAS or R can yield the posterior mode and asymptotic covariance matrix. This novel nonparametric prior is employed in the accelerated hazards model, which is further generalized to time-dependent covariates. The proposed approach fares considerably better than previous approaches in simulations; data on the effectiveness of biodegradable carmustine polymers on recurrent brain malignant gliomas is investigated.
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DOI:
10.1002/cjs.10001
发表时间:
2009-03-01
影响因子:
0.6
作者:
Hanson, Timothy;Johnson, Wesley;Laud, Purushottam
通讯作者:
Laud, Purushottam
影响因子:
3.7
作者:
CROWLEY, J;HU, M
通讯作者:
HU, M
影响因子:
3.7
作者:
GEISSER, S;EDDY, WF
通讯作者:
EDDY, WF
影响因子:
2.5
作者:
NELSON, W
通讯作者:
NELSON, W
影响因子:
2.7
作者:
ZUCKER, DM;LAKATOS, E
通讯作者:
LAKATOS, E