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R for Data Science

You're reading from   R for Data Science Learn and explore the fundamentals of data science with R

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Product type Paperback
Published in Dec 2014
Publisher
ISBN-13 9781784390860
Length 364 pages
Edition 1st Edition
Languages
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Author (1):
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Dan Toomey Dan Toomey
Author Profile Icon Dan Toomey
Dan Toomey
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Toc

Questions

Factual

  • How does using lowercase help in analyzing text?
  • Why are there so many sparse entries? Does this number make sense?
  • Determine how to order the instructors matrix.

When, how, and why?

  • How would you remove the Unicode sequences from the text?
  • In what list of terms would you be interested in finding associations?
  • How could you adjust the course credits to be inclusive of the ranges of credits?

Challenges

  • Can you determine the benefit of using word stems in the analysis?
  • Can you figure out how to display the actual text words in the dendogram rather than their index point?
  • Is there a way to convert a non-heterogeneous XML dataset to a matrix?
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