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Alfredo Roccato

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Articles by Alfredo Roccato

Understanding and Applying Correspondence Analysis

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By Maarit Widmann, Alfredo Roccato, Anthony Alford
| InfoQ Verified
Key Takeaways Simple correspondence analysis (CA) is a technique to analyze relationships between categorical variables and create profiles based on the projections of the original variables to the new dimensions that it creates CA begins with transformation of the raw data into a two-way contingency table that shows the frequency distribution of the variables Based on the proximity along the first few of the projected dimensions, we can visually explore the individuals’ and categories’...
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Easy Interpretation of a Logistic Regression Model with Delta-p Statistics

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By Maarit Widmann, Srini Penchikala, Alfredo Roccato
| InfoQ Verified
Key Takeaways With Delta-p statistics, the predictions based on a logistic regression model are easy to understand by non-technical decision-makers. Learn how to calculate the Delta-p statistics based on the coefficients of a logistic regression model for credit application processing. Data workflow includes the steps for accessing the raw data to training the logistic regression model, and evaluating the effects of individual predictor columns with Delta-p statistics.
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