Analyzing Text Data with R on Windows

Provides introduction to text mining with r on a Windows computer. Text analytics related topics include:
- reading txt or csv file
- cleaning of text data
- creating term document matrix
- making wordcloud and barplots.

R is a free software environment for statistical computing and graphics, and is widely used by both academia and industry. R software works on both Windows and Mac-OS. It was ranked no. 1 in a KDnuggets poll on top languages for analytics, data mining, and data science. RStudio is a user friendly environment for R that has become popular.

[ericrichard]

You're such an excellent and clear teacher ! thank you.
Question: how do you deal with names? First names and last names are separated into 2 different words. How to merge them into one so that the bar plot visualizes them not as separate ?

[shraykumar]

Hello sir I have followed the same process and want to make Sankey and node diagram but am getting an error, can u help me out in making the plot

[devawratvidhate]

Thanks for this Gr8 and simple video.
I have 200k rows in dataset and in 1st and 2nd column consist of sentences and i have to predict cosine similarity between 1 & 2 column into 3rd column
ex:- 1st column : who is ramesh, 2nd column I'm not a ramesh singh and in 3rd column: 0.70 (which is there cosine value )
how to approach this problem.

[matharbarghi]

Thank you so much for your prompt response. Do you have any other video about Data analysis using R?

[sk]

please Sir make video on build a model Convolutional Recurrent Neural Network for text recognition .

[NiteshKumar-tjbc]

In the bar plot some words are out of the box, i tried with cex.axis but it doesnt fix also i tried with axis(1, cex.axis=0.5) but it still cuts some letter of the words .So is it a R studio problem or is their a way to this

[zahedarman]

At the last moment, when I run the last code I received the following error:

Error in if (grepl(tails, words[i])) ht <- ht + ht * 0.2 :
argument is of length zero

In addition: Warning messages:

1: In doTryCatch(return(expr), name, parentenv, handler) :

"min.words" is not a graphical parameter

2: In doTryCatch(return(expr), name, parentenv, handler) :

"min.words" is not a graphical parameter

3: In doTryCatch(return(expr), name, parentenv, handler) :

"min.words" is not a graphical parameter

4: In doTryCatch(return(expr), name, parentenv, handler) :

"min.words" is not a graphical parameter


Do you have any suggestion for that please?

[Didanihaaaa]

Thanks for your great channel. I am wondering, could you please teach us about regex library? - (i.e. how to search questions in a text file save it in other formats like CSV)

[DnyaneshwarPanchaldsp]

Can you make video on tokenization in R language

[tanmaygawade]

Any idea how to remove emoticons and smileys from the review in tm_map () func.

[mdabusayeed]

Hi
I am little lost, My question is how to find the data as you mention you have downloaded from codes website? can you please help me by explaining how to obtain that .
thanks

[akkimalhotra]

Dear Sir,
I am getting the following error. could you please check. Thanks

> cleanset <- tm_map(cleanset, PlainTextDocument)
> dtm <- TermDocumentMatrix(cleanset,
Error in simple_triplet_matrix(i, j, v, nrow = length(terms), ncol = length(corpus),   :
  'i, j' invalid

[ArjunCPArjun]

Dear Dr. Rai,

Thank you for another excellent tutorial. I have gained many skills from your tutorials.
While running the code dtm <- TermDocumentMatrix(cleanset, control=list(minWordLength=c(1, Inf)))
resulted in an error given below. I request you to take a look at this issue and help me to move further.
Error in simple_triplet_matrix(i, j, v, nrow = length(terms), ncol = length(corpus), :
'i, j' invalid


--Arjun

[randomslugger]

sir i am getting : Error in barplot(termFrequency, las = 2, col = rainbow(20)) :
object 'termFrequency' not found

[KnowledgeADDA-nc]

sir please make a video related to the tweets polarity and ggplot and maps related to the tweets origin

[rajatbathla]

could you please share the code files and data file

[MukeshKumar-mpkc]

while executing code
dtm<-TermDocumentMatrix(cleanset, control=list(minWordLength=c(1, Inf)))

its showing error
dtm<-TermDocumentMatrix(cleanset, control=list(minWordLength=c(1, Inf)))
Error in simple_triplet_matrix(i, j, v, nrow = length(terms), ncol = length(corpus), :
'i, j' invalid

[vishnukowndinya]

Hi Sir, does the terms "creating corpus" and "tokens (tokenization)" are one and the same ???

[kumarmithun]

Hi Sir,
Thank u very much. It's a great tutorial.
I have two question
1)How to fix spelling mistake of a word in the corpus and replace with the correct word?
2)Is R able to handle if I have 5 lacs comment to analyse?

[bbbaaa]

Sir may I ask what if the text file contains special characters? like ("" \ /), I tried the suggested commands, but it doesn't seem working properly.