Keywords Discovery with Simple Text Mining using R, Tropical Data Science School, 4 December 2021, School of Computer Sciences, USM. (Only TOC Shared)

1. Keywords Discovery with
Simple Text Mining using R
by Gan Keng Hoon
4 December 2021
Tropical Data Science School
© 2021 GKH 1

2. Contents of Module
1. Installing R, RStudio and
Packages
2. Creating R Project
3. Loading Data into R
i. Text File
4. Text Pre Processing
5. Text Normalization
i. Stemming
ii. Lemmatization
6. Text Representation
i. Document Term Matrix
7. Text Mining
i. Word Frequency
ii. Term Correlation
iii. Word Association
8. Simple Graphics
i. Histogram
ii. Word Cloud
iii. Dendrogram
© 2021 GKH 2

3. Prologue
© 2021 GKH 3

4. Text Mining
Text Mining
- analyzing raw text with targeted output, e.g., keywords,
categories, topics etc.
Text Analysis
- focuses on a particular step, e.g., preprocessing, normalization,
syntax, semantics etc.
Text Analytics
- focuses on output, visuals, decision making.
- focuses on finding patterns and trends across large sets
© 2021 GKH 4