Analyzing textual information : from words to meanings through numbers
著者
書誌事項
Analyzing textual information : from words to meanings through numbers
（Sage publications series, . Quantitative applications in the social sciences ; v. 188）
Sage, c2022
- : pbk
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注記
Includes bibliographical references and index
内容説明・目次
内容説明
Researchers in the social sciences and beyond are dealing more and more with massive quantities of text data requiring analysis, from historical letters to the constant stream of content in social media. Traditional texts on statistical analysis have focused on numbers, but this book will provide a practical introduction to the quantitative analysis of textual data. Using up-to-date R methods, this book will take readers through the text analysis process, from text mining and pre-processing the text to final analysis. It includes two major case studies using historical and more contemporary text data to demonstrate the practical applications of these methods. Currently, there is no introductory how-to book on textual data analysis with R that is up-to-date and applicable across the social sciences. Code and a variety of additional resources to enrich the use of this book are available on an accompanying website. These resources include data files from the 39th Congress, and also the collection of tweets of President Trump, now no longer available to researchers via Twitter itself.
目次
Series Editor's Introduction
Preface
Acknowledgments
About the Authors
Chapter 1: Introduction
1.1 Text Data
1.2 The Two Applications Considered in This Book
1.3 Introductory Example and Its Analysis Using the R Statistical Software
1.4 The Introductory Example Revisited, Illustrating Concordance and Collocation Using Alternative Software
1.5 Concluding Remarks
1.6 References
Chapter 2: A Description of the Studied Text Corpora and A Discussion of Our Modeling Strategy
2.1 Introduction to the Corpora: Selecting the Texts
2.2 Debates of the 39th U.S. Congress, as recorded in the Congressional Globe
2.3 The Territorial Papers of the United States
2.4 Analyzing Text Data: Bottom-Up or Top-Down Analysis
2.5 References
Appendix to Chapter 2: The Complete Congressional Record
Chapter 3: Preparing Text for Analysis: Text Cleaning and Formatting
3.1 Text Cleaning
3.2 Text Formatting
3.3 Concluding Remarks
3.4 References
Chapter 4: Word Distributions: Document-Term Matrices of Word Frequencies and the "Bag of Words" Representation
4.1 Document-Term Matrices of Frequencies
4.2 Displaying Word Frequencies
4.3 Co-Occurrence of Terms in the Same Document
4.4 The Zipf Law: An Interesting Fact About the Distribution of Word Frequencies
4.5 References
Chapter 5: Metavariables and Text Analysis Stratified on Metavariables
5.1 The Significance of Stratification and the Importance of Metavariables
5.2 Analysis of the Territorial Papers
5.3 Analysis of Speeches From the 39th Congress
5.4 References
Chapter 6: Sentiment Analysis
6.1 Lexicons of Sentiment-Charged Words
6.2 Applying Sentiment Analysis to the Letters of the Territorial Papers
6.3 Using Other Sentiment Dictionaries and the R Software tidytext for Sentiment Analysis
6.4 Concluding Remarks: An Alternative Approach for Sentiment Analysis
6.5 References
Chapter 7: Clustering of Documents
7.1 Clustering Documents
7.2 Measures for the Closeness and the Distance of Documents
7.3 Methods for Clustering Documents
7.4 Illustrating Clustering Methods on a Simulated Example
7.5 References
Chapter 8: Classification of Documents
8.1 Introduction
8.2 Classification Procedures
8.3 Two Examples Using the Congressional Speech Database
8.4 Concluding Remarks on Authorship Attribution: Commenting on the Field of Stylometry
8.5 References
Chapter 9: Modeling Text Data: Topic Models
9.1 Topic Models
9.2 Fitting Topic Models to the Two Corpora Studied in This Book
9.3 References
Chapter 10: n-Grams and Other Ways of Analyzing Adjacent Words
10.1 Analysis of Bigrams
10.2 Text Windows to Measure Word Associations Within a Neighborhood of Words and a Discussion of the R Package text2vec
10.3 Illustrating the Use of n-Grams: Speeches of the 39th Congress
Chapter 11: Concluding Remarks
Appendix: Listing of Website Resources
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