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did
双重差分估计
双重差分模型（difference-in-difference，DID）近年来多用于计量经济学中对于公共政策或项目实施效果 的定量评估。
通常大范围的公共政策有别于普通科研性研究，难以保证对于政策实施组和对照组在样本分配上的完全随机。非随机分配政策实施组和对照组的试验称为自然试验（naturaltrial），此类试验存在较显著的特点，即不同组间样本在政策实施前可能存在事前差异，仅通过单一前后对比或横向对比的分析方法会忽略这种差异，继而导致对政策实施效果的有偏估计。(Quantitative evaluation of policy or project implementation effect. Generally, a wide range of public policies is different from general scientific research, and it is difficult to ensure that the sample allocation for the policy implementation group and the control group is completely random. The non-randomly assigned policy implementation group and the control group are called natural trials, which have significant characteristics, i.e. there may be prior differences between the different groups of samples before the implementation of the policy, and this difference will be ignored only through a single pre-and post-comparison or horizontal comparison analysis method, which leads to the policy. Biased estimation of implementation)
- 2020-07-03 20:00:01下载
- 积分：1
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r语言批量读取xyz格式文件
水动力模型MIKE21数据后处理
dfsu格式文件导出模拟结果xyz格式文件
R语言可以迅速批量读取xyz文件，并根据文件名排序
以便于后期处理(MIKE 21
export results from dsfu
R read numerous xyz files)
- 2021-04-15 14:28:54下载
- 积分：1
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GEOquery
说明： 从GEO数据库下载原始数据，提取数据中的表达值(Download raw data from the GEO database and extract the expression values in the data)
- 2020-06-21 06:20:02下载
- 积分：1
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sir和无标度网络
SIR。。。。 传染病传播的SIR模型，很全，可直接应用仿真模拟
(SIR model the spread of infectious diseases, it is full, the simulation can be applied directly)(SIR model the spread of infectious diseases, it is full, the simulation can be applied directly)
- 2020-11-30 09:59:27下载
- 积分：1
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7.1 Bagging,RF&Adaboost
说明： 代码详细解释了bagging方法的运用，以及包含了详细的bagging代码(The code explains the application of bagging method in detail, and contains detailed bagging code.)
- 2019-05-23 13:28:17下载
- 积分：1
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7.1 Bagging,RF&Adaboost
代码详细解释了bagging方法的运用，以及包含了详细的bagging代码(The code explains the application of bagging method in detail, and contains detailed bagging code.)
- 2019-05-23 13:28:17下载
- 积分：1
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R语言copula
R语言对数据进行Garch-t-Copula建模和Garch-Clayton-Copula建模(Garch-t-Copula modeling and Garch-Clayton-Copula modeling for data in R language)
- 2021-04-28 21:58:44下载
- 积分：1
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环境与生态统计__R语言的应用_钱松著_12979948
结合案例来描述每一种统计学模型，解释如何开展数据分析，讨论采用模拟手段来检验模型，这是模型开发与评估中的重要方面，给出多层回归模型（如多层ANOVA、多层线性回归和广义多层模型），指导如何用R语言采实现诸多方法，在线提供书中所用到的数据集和R语言脚本。(Combined with the case to describe each kind of statistical model, how to carry out data analysis and interpretation, discusses the use of simulation to test the model, this is an important aspect of the development and evaluation of the model, given the multi regression model (such as multilayer ANOVA, multi linear regression and generalized multi model), how to achieve a lot of mining method with the R language guide online provide the data set and the R script used in the book.)
- 2017-11-17 20:14:49下载
- 积分：1
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小提琴图 (1)
The source code of data analysis using R language does not contain data sets. If you need to contact us
- 2019-02-23 14:46:45下载
- 积分：1
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11-27-model
利用R软件建立混合效应模型，对于不同随机效应参数的混合模型进行对比(develop the mixed-effects models and compare the goodness-of-fit)
- 2018-03-19 20:53:48下载
- 积分：1
