如何处理/摆脱表情符号,以便对推文进行排序以进行情绪分析?
获取:sort.list(y)中的错误:输入无效
谢谢
这就是表情从 twitter 和 r 中出现的方式:
\xed��\xed�\u0083\xed��\xed��
\xed��\xed�\u008d\xed��\xed�\u0089
如何处理/摆脱表情符号,以便对推文进行排序以进行情绪分析?
获取:sort.list(y)中的错误:输入无效
谢谢
这就是表情从 twitter 和 r 中出现的方式:
\xed��\xed�\u0083\xed��\xed��
\xed��\xed�\u008d\xed��\xed�\u0089
这应该摆脱表情符号,使用iconv
ndoogan 的建议。
一些可重现的数据:
require(twitteR)
# note that I had to register my twitter credentials first
# here's the method: http://stackoverflow.com/q/9916283/1036500
s <- searchTwitter('#emoticons', cainfo="cacert.pem")
# convert to data frame
df <- do.call("rbind", lapply(s, as.data.frame))
# inspect, yes there are some odd characters in row five
head(df)
text
1 ROFLOL: echte #emoticons [humor] http://t.co/0d6fA7RJsY via @tweetsmania ;-)
2 “@teeLARGE: when tmobile get the iphone in 2 wks im killin everybody w/ emoticons & \nall the other stuff i cant see on android!" \n#Emoticons
3 E poi ricevi dei messaggi del genere da tua mamma xD #crazymum #iloveyou #emoticons #aiutooo #bestlike http://t.co/Yee1LB9ZQa
4 #emoticons I want to change my name to an #emoticon. Is it too soon? #prince http://t.co/AgmR5Lnhrk
5 I use emoticons too much. #addicted #admittingit #emoticons <ed><U+00A0><U+00BD><ed><U+00B8><U+00AC><ed><U+00A0><U+00BD><ed><U+00B8><U+0081> haha
6 What you text What I see #Emoticons http://t.co/BKowBSLJ0s
这是删除表情符号的关键行:
# Clean text to remove odd characters
df$text <- sapply(df$text,function(row) iconv(row, "latin1", "ASCII", sub=""))
现在再次检查,看看奇数字符是否消失(见第 5 行)
head(df)
text
1 ROFLOL: echte #emoticons [humor] http://t.co/0d6fA7RJsY via @tweetsmania ;-)
2 @teeLARGE: when tmobile get the iphone in 2 wks im killin everybody w/ emoticons & \nall the other stuff i cant see on android!" \n#Emoticons
3 E poi ricevi dei messaggi del genere da tua mamma xD #crazymum #iloveyou #emoticons #aiutooo #bestlike http://t.co/Yee1LB9ZQa
4 #emoticons I want to change my name to an #emoticon. Is it too soon? #prince http://t.co/AgmR5Lnhrk
5 I use emoticons too much. #addicted #admittingit #emoticons haha
6 What you text What I see #Emoticons http://t.co/BKowBSLJ0s
我推荐功能:
ji_replace_all <- function (string, replacement)
从包中:
install_github (" hadley / emo ")
.
我需要从西班牙语推文中删除表情符号。尝试了几个选项,但有些为我弄乱了文本。然而,这是一个完美的奇迹:
library(emo)
text="#VIDEO ,Alguien sabe si en Afganistán hay cigarro?"
ji_replace_all(text,"")
结果:
"#VIDEO ,Alguien sabe si en Afganistán hay cigarro?"
您可以使用正则表达式来检测非字母字符并将其删除。示例代码:
rmNonAlphabet <- function(str) {
words <- unlist(strsplit(str, " "))
in.alphabet <- grep(words, pattern = "[a-z|0-9]", ignore.case = T)
nice.str <- paste(words[in.alphabet], collapse = " ")
nice.str
}