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Chapter 1 serves as an introduction to applying the tidy text principle to text analysis and provides an overview of the most basic but essential feature of texts, B word frequency b . To summarize, the authors first introduce the tidy text format and illustrate what we can do with this structure in text analysis, then explain how to convert back and forth the format between tidy and nontidy, which is vital to bridge the B tidytext b package with other existing tools. One of the most remarkable contributions is that the authors expand the tidy text principles to data with unstructured and nontidy format, making it a practical and excellent guide about text mining and data processing. [Extracted from the article]

Both authors are well known academics who between them run the library and information science courses at The City University in London. For example, the acronym for the American Society for Information Science and Technology used in the book is not the officially approved acronym; the spelling out of LISTA gives the wrong name for the abstracting service; also, DIKW and DIKUW, used on page 89, and MOOCS on page 341 of the book aren't in the list of acronyms. Also, the authors are not consistent - is it "fair dealing" (p. 298) or "fair use" (p. 300)?. [Extracted from the article]

Inventing Future Cities: Batty, M. (2018): Inventing Future Cities. With this book the author, Michael Batty, longtime director of the Centre for Advanced Spatial Analysis at University College London, complements his magnum opus I The New Science of Cities i (2013). Obviously, readers in the second decade of the 21st century expect the author's insights into the spatial implications of new technologies and what effect this will have on the form and function of cities, or rather city-regions. [Extracted from the article]

The third part of the book "Property of sequences" comprises four chapters - chapters seven through ten. The last part of the book "Appendix" comprises three chapters - chapters 20 through 22. The second part of the book "Property of population" comprises three chapters - chapters four through six. [Extracted from the article]

In Western numerals, a number such as 1938 needs only four signs, whereas Roman numerals need ten: MCMXXXVIII. In many societies, particularly contemporary industrialized ones, numerical notations such as the decimal numerals 0123456789 are a common and ubiquitous material form for representing numbers, others being things like fingers and tallies. Chrisomalis notes they are not generally concise, as measured by the number of signs needed for a particular numeral phrase. [Extracted from the article]