基于贝叶斯时空log-logistic模型的船舶碰撞频率.pdf,基于贝叶斯时空log-logistic模型的船舶碰撞频率 摘要:为准确地分析和量化船舶碰撞致因与船舶碰撞频率之间的关系,提高对船舶碰撞频率估计的精确度,考虑 交通流速度、交通流量、交通流密度、航道宽度和环境因素,采用贝
看书碰到了 Log-linear model 这一概念,在中文互联网上看到的简介大多是该模型在某一专业领域的应用,并没有给出对数线性模型的定义。后来在wiki上看到了一个简洁的定义,在此分享,如有错误还请指正。 对数线性模型用公式表示如下,其对数是模型参数的线性组合,这就可以应用(多元)线性回归拟合数据。 其中fi(X) 是...
upper asymptote,50%effective concentration (EC 50 )and steepness (related to the slope of the curve at the EC 50 )respectively.Key words:4 parameter log - logistic model;logistic model;S curve;absorbance;bioassay在生物活性的定量测定中,一般有 2 种反应类型,一种是直线性反应,另一种是曲线性反应...
采用对数线性模型分析；若存在主次，则以其中一个为因变量，其余为自变量，采用logistic回归分析。
upper asymptote,50%effective concentration ( EC50) and steepness ( related to the slope of the curve at the EC50) respectively.Key words: 4 parameter log - logistic model;logistic model;S curve;absorbance;bioassay在生物活性的定量测定中, 一般有 2 种反应类型,一种是直线性反应,另一种是曲线性...
In survival analysis when the mortality reaches a peak after some finite period and then slowly declines, it is appropriate to use a model which has a nonmonotonic failure rate. In this paper we study the log-logistic model whose failure rate exhibits the above behavior and its mean residual...
The validity analysis will be to arrive at trade off in choosing a simple model as compared to complex model by determining their performances across multiple data sets. Data for the predict validity analysis has been taken from different time periods to understand the impact of these models ...
For example, I am estimating a log-logistic hazard model; instead of intrducing covariates to the scale parameter only, I want to introduce the same set of covariates to both the scale parameter and the shape parameter. In this case, should I count the number of covariates (k) twice, wh...
采用对数线性模型分析；若存在主次，则以其中一个为因变量，其余为自变量，采用logistic回归分析。
In the analysis of survival data with parametric models, it is well known that the Weibull model is not suitable for modeling cases where the hazard rate is non-monotonic. For such cases, log-logistic model is frequently used. However, due to the symmetric property of the log-logistic model...