scikit-learn : Machine Learning Simplified

Using LDA for classification

Linear Discriminant Analysis (LDA) attempts to fit a linear combination of features to predict the outcome variable. LDA is often used as a preprocessing step. We'll walk through both methods in this recipe.

Getting ready

In this recipe, we will do the following:

1. Grab stock data from Yahoo.
2. Rearrange it in a shape we're comfortable with.
3. Create an LDA object to fit and predict the class labels.
4. Give an example of how to use LDA for dimensionality reduction.

How to do it…

In this example, we will perform an analysis similar to Altman's Z-score. In this paper, Altman looked at a company's likelihood of defaulting within two years based on several financial metrics. The following is taken from the Wiki page of Altman's Z-score: ...