All Questions
Tagged with tm sentiment-analysis
12 questions
0
votes
1
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233
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Working with document term matrix in xgboost
I am working on sentiment analysis in r. i've done making a model with naive bayes. but, i wanna try another one, which is xgboost. then, i got a problem when tried to make xgboost model because don't ...
0
votes
1
answer
260
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Text mining on sentences with the tm.package in R
I'm working with the tm package in R.
I have several txt.files in a folder and a list of 30 sentences.
Now I have to check if my files contains these sentences.
How can I create now a programming ...
- 5
2
votes
1
answer
1k
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Remove languages other than English from corpus or data frame in R
I am currently looking to perform some text mining on 25000 YouTube comments, which I gathered using the tuber package. I am very new to coding and with all these different information out there, this ...
- 195
0
votes
1
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459
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R Sentiment Analysis with syuzhet tm corpus
I'm newbie to text analysis in R, is there an easy way to apply the syuzhet: get_nrc_sentiment to a corpus with x elements (loaded individual text files)? I'm guessing you need turn the corpus back to ...
- 165
4
votes
3
answers
14k
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remove emoticons in R using tm package
I'm using the tm package to clean up a Twitter Corpus. However, the package is unable to clean up emoticons.
Here's a replicated code:
July4th_clean <- tm_map(July4th_clean, content_transformer(...
- 107
0
votes
1
answer
1k
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How do I average a sentiment score for a day with multiple texts?
I am doing a text sentiment analysis in R using the tm package. I have scraped news articles from Reuters and gave them a variable name according to their date. I added a,b,c etc. to indicate multiple ...
- 25
3
votes
1
answer
285
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How to chain together multiple qdap transformations for text mining / sentiment (polarity) analysis in R
I have a data.frame that has week numbers, week, and text reviews, text. I would like to treat the week variable as my grouping variable and run some basic text analysis on it (e.g. qdap::polarity). ...
- 20.4k
0
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1
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433
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Classifying anger,disgust,fear,joy,sadness,surprise using RTextTools
I have trying to do sentiment analysis of tweets. I am trying to classify anger,disgust,fear,joy,sadness,surprise of those tweets which is generally done by RTextTools. But I can't how to do it? It ...
- 1,187
2
votes
2
answers
3k
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R functions using SentiWordNet
I am doing sentiment analysis and text mining on an e-mail box dedicated for client feedback. I use R for this work. I based the sentiment analysis on the work done by Jeffrey Breen. It works fine ...
- 33
6
votes
0
answers
2k
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DocumentTermMatrix fails with a strange error only when # terms > 3000
My code below works fine unless I use create a DocumentTermMatrix with more that 3000 terms. This line:
movie_dict <- findFreqTerms(movie_dtm_train, 8)
movie_dtm_hiFq_train <- ...
- 5,998
0
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0
answers
1k
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R tm, plugin.sentiment packages: how to plot sentiment trending?
My Objective:
Select a stock ticker, plot candlestick plot with stock trend for it.
Access news for the same stock ticker and plot sentiment analysis trends for it to visually correlate the trends.
...
2
votes
1
answer
2k
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negation handling in R, how can I replace a word following a negation in R?
I'm doing sentiment analysis for financial articles. To enhance the accuracy of my naive Bayes classifier, I'd like to implement negation handling.
Specifically, I want to add the prefix "not_" to ...
- 693