October 2017
Beginner to intermediate
270 pages
7h
English
Content preview from Machine Learning for Developers
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The CHDAGE dataset
For the first simple example, we will use a very simple and often studied dataset, which was published in Applied Logistic Regression, from David W. Hosmer, Jr. Stanley Lemeshow and Rodney X. Sturdivant. We list the age in years (AGE) and the presence or absence of evidence of significant coronary heart disease (CHD) for 100 subjects in a hypothetical study of risk factors for heart disease. The table also contains an identifier variable (ID) and an age group variable (AGEGRP).
The outcome variable is CHD, which is coded with a value of 0 to indicate that CHD is absent, or 1 to indicate that it is present in the individual. In general, any two values could be used, but we have found it most convenient to use zero and one. ...
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