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– Origin and Meaning of R Package Names: https://link.zhihu.com/?target=https%3A//www.statworx.com/en/blog/why-is-it-called-that-way-origin-and-meaning-of-r-package-names/ [99] Tidy Data: https://link.zhihu.com/?target=https%3A//vita.had.co.nz/papers/tidy-data.pdf 整理不易,...
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Second, the model is described and defined in math- ematical notation. The model is then used to simulate synthetic data using R code that closely reflects the model definition and then fitted to the syn- thetic data to recover the underlying model parameters. Finally, the model ...
Syntax Meaning x + y x加 y x - y x减 y x*y 将x 和 y 并置 x/y x 正斜杠 y x %+-% y x 加或减 y x %/% y x 除以 y x %*% y x 乘以 y x %.% y x c点 y x[i] x 下标 i x^2 x 上标 2 paste(x, y, z) 并置x、y 和 z sqrt(x) x 的平方根 sqrt(x,...
Symbol Meaning ●Supported ○Not supported ▧Supported in MP4/WebM/3GP ⁕Only Supported in MP4 Feature
This means that lower case letters have a different meaning from upper case letters. The word MyVariable is not the same as myvariable, and the two would be treated separately if used to hold variables as illustrated below: > MyVariable<-5 > MyVariable [1] 5 > myvariable Error: Object...
origin and meaning of r package names [98] :一些r包名称的由来 tidy data [99] :by hadley wickham 未完待续. 参考资料 [1] coffeecat: https://www.zhihu.com/people/coffeecat2000 [2] coffee学生物统计的地方: https://www.zhihu.com/column/c_1...
..many people know the mechanics of statistics very well, without truly understanding an intuitive levels what those equations are really doing, and this is our focus…For example, consider estimator bias. Students in a math stat course learn the mathematical definition of bias, after which they...
The economic meaning of the two models is also different: in the first model only the time-varying components diffuse spatially, in the second spatial spillovers too have a permanent component [76]. Reference [87] (see also 2.4) on the difference between these two RE specifications. In this...