Klaus Krippendorff's Quadrilogy

This software computes four reliability coefficients from numerous binary coded units of analysis.

• The Replicability of the process of binary coding of units
• The Accuracy of the generated data
• The Surrogacy of a substitute for the majorities in units
• The Decisiveness of the majorities in units

Its virtue lies the ability of accepting very large samples of units coded by an equally large and variable number of observers, coders or judges:

Here are the links to download and run the application:

• The Users’ Instructions
• The Mathematical Foundations of the Quadrilogy
• The Terms of using the Quadrilogy software
• The executable Quadrilogy software