Big Data, Data Mining, and Machine Learning by Dean Jared

Author:Dean, Jared
Language: eng
Format: epub, pdf
ISBN: 9781118920701
Publisher: Wiley
Published: 2014-05-01T00:00:00+00:00

Figure 5.26 Naive Bayes Model for Pain Medication Study

Parameter Learning

Given the structure, we can learn the parameters of the conditional probability distributions, that is, , where Y is the target (Pain), and Xi is an input variable (Treatment, Sex, Age, and Duration).

Using the maximum likelihood estimation, we can compute

where

= frequency table of Xi and Y

= frequency table of Y

The conditional probability distribution for Treatment is shown in Table 5.6.

Table 5.6 Conditional ML Probability Distribution for Treatments Given Target is Pain

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