July 2017
Beginner to intermediate
442 pages
10h 8m
English
Content preview from Statistics for Machine Learning
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Remedial actions to push the model towards the ideal region
Models with either high bias or high variance error components do not produce the ideal fit. Hence, some makeovers are required to do so. In the following diagram, the various methods applied are shown in detail. In the case of linear regression, there would be a high bias component, meaning the model is not flexible enough to fit some non-linearities in data. One turnaround is to break the single line into small linear pieces and fit them into the region by constraining them at knots, also called Linear Spline. Whereas decision trees have a high variance problem, meaning even a slight change in X values leads to large changes in its corresponding Y values, this issue can be resolved ...
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