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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

  • I have used the sum of squares differences for a crude comparison of models. Do you think this is a fair method?
  • What cutoff percentage accuracy would you use for your modeling?

When, how, and why?

  • There are several methods to measure the performance of a model. Investigate which you prefer.
  • Which modeling technique appears to fit your data?

Challenges

  • Determine a better way to determine whether a binary data model is accurate against a simple percentage correct.
  • What kind of data would be more suitable to developing a neural net?
  • Work with the method argument predict to use other modeling techniques for your data.
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