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Red vinho verde wine samples, from the north of Portugal. The goal is to model wine quality based on physicochemical tests. Related data set: "UCI: White wine quality". This data set is sourced from the UCI Machine Learning Repository.

Attribute information: 1 - fixed acidity 2 - volatile acidity 3 - citric acid 4 - residual sugar 5 - chlorides 6 - free sulfur dioxide 7 - total sulfur dioxide 8 - density 9 - pH 10 - sulphates 11 - alcohol Output variable (based on sensory data): 12 - quality (score between 0 and 10)