toxicity(robustbase)
toxicity()所属R语言包:robustbase
Toxicity of Carboxylic Acids Data
羧酸类化合物毒性的数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
The aim of the experiment was to predict the toxicity of carboxylic acids on the basis of several molecular descriptors.
实验的目的是几个分子描述符的基础上预测的毒性羧酸。
用法----------Usage----------
data(toxicity)
格式----------Format----------
A data frame with 38 observations on the following 10 variables which are attributes for carboxylic acids:
38以下10个变量是羧酸的属性的观察与数据框:
toxicity aquatic toxicity, defined as
toxicity水生生物毒性,定义为
logKow log Kow, the partition coefficient
logKowlog Kow“的分配系数
pKa pKa: the dissociation constant
pKa的pKa:解离常数
ELUMO Energy of the lowest
ELUMO能源的最低
Ecarb Electrotopological state of the carboxylic group
Ecarb电性状态的羧基
Emet Electrotopological state of the methyl group
Emet电性状态的甲基
RM Molar refractivity
RM摩尔折射率
IR Refraction index
IR折射率
Ts Surface tension
Ts表面张力
P Polarizability
P极化
源----------Source----------
The website accompanying the MMY-book: http://www.wiley.com/legacy/wileychi/robust_statistics
伴随着MMY书:http://www.wiley.com/legacy/wileychi/robust_statistics网站
参考文献----------References----------
Improved QSAR analysis of the toxicity of aliphatic carboxylic acids; Russian Journal of General Chemistry 73, 1792–1798.
实例----------Examples----------
data(toxicity)
summary(toxicity)
plot(toxicity)
plot(toxicity ~ pKa, data = toxicity)
## robustly scale the data (to scale 1) using Qn[#强劲的数据扩展(扩展1)使用QN]
(scQ.tox <- sapply(toxicity, Qn))
scTox <- scale(toxicity, center = FALSE, scale = scQ.tox)
csT <- covOGK(scTox, n.iter = 2,
sigmamu = s_Qn, weight.fn = hard.rejection)
as.dist(round(cov2cor(csT$cov), 2))
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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