Rho*_*odo 17 r text-mining iconv sentiment-analysis
如何处理/删除表情符号以便我可以对推文进行情感分析？
获取:sort.list(y)中的错误:输入无效
谢谢
这就是表情符号从twitter发送到r中的方式:
\xed??\xed?\u0083\xed??\xed??
\xed??\xed?\u008d\xed??\xed?\u0089
Ben*_*Ben 22
这应该摆脱表情符号,使用iconvndoogan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线:
# Clean text to remove odd characters
df$text <- sapply(df$text,function(row) iconv(row, "latin1", "ASCII", sub=""))
现在再次检查,看看奇怪的字符是否消失了(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