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杭州师范大学外国语言学及应用语言学研究生课程
第一讲 R Starter Tutorial
行首标有##号的,表示输出的结果;不带标记的,表示输入的代码
rm(list = ls(all=TRUE))# Arithmetic operators# + - * /9+3 #type in this after the prompt ">"
## [1] 12
#assign a value to a variable# <- =num1 <- 9 #num1 is assigned without output(num2 <- 3) #num2 is displayed while assigned
(未完)
第二讲 StringR+Regular Expression用正则表达式处理文字
data("words")str(words)
## chr [1:980] "a" "able" "about" "absolute" "accept" "account" "achieve" ...
head(words)
## [1] "a" "able" "about" "absolute" "accept" "account"
str_subset(words,"^y")
## [1] "year" "yes" "yesterday" "yet" "you" "young"
第三讲 Frequency Spectrum词频分析
library(zipfR)##Case 1 #data("BrownImag.spc")summary(BrownImag.spc)
## zipfR object for frequency spectrum ## Sample size: N = 258196 ## Vocabulary size: V = 19494 ## Class sizes: Vm = 9334 3024 1553 993 724 476 389 303 ...
print(BrownImag.spc)
## m Vm ## 1 1 9334 ## 2 2 3024 ## 3 3 1553 ## 4 4 993 ## 5 5 724 ## 6 6 476 ## 7 7 389 ## 8 8 303 ## 9 9 266 ## 10 10 189 ## ... ## ## N V ## 258196 19494
Vm(BrownImag.spc,1:15)
## [1] 9334 3024 1553 993 724 476 389 303 266 189 167 157 130 128 105
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