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Machine Learning For Dummies
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If you believe that bias is still affecting your model, you have little choice but to create new features that improve the model’s performance. Every new feature can make guessing the target response easier. For instance, if classes aren’t linearly separable, feature creation is the only way to change a situation that your machine learning algorithm cannot properly deal with.
Automatic feature creation is possible using polynomial expansion or the support vector machines class of machine learning algorithms. Support vector machines can automatically look for better features in higher-dimensional feature spaces in a way that’s both computationally fast and memory optimal.
However, nothing can really substitute for your expertise and understanding of the method needed to solve the data problem that the algorithm is trying to learn. You can create features based on your knowledge and ideas of how things work in the world. Humans are still...
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