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How is logistic regression done?

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How is logistic regression done?

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Logistic regression measures the relationship between the dependent variable (our label of what we want to predict) and one or more independent variables (our features) by estimating probability using its underlying logistic function (sigmoid).

The image shown below depicts how logistic regression works:

logistic-regression

The formula and graph for the sigmoid function are as shown:

sigmoid-function

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