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4th Semester
AD-404
Unit 4 Notes

AD-404 DATA SCIENCE Unit 4 Notes

Notes and important questions for unit 4: Data Manipulation With Pandas.

Unit 4 · Short notes Data Manipulation With Pandas Introduction to Pandas: understanding DataFrame, handling missing values, data operations, string manipulation, regular expressions, data cleaning, outlier detection · Visualization tools in Python: representation of pie chart, bar chart, histogram, scatterplots · Data analysis performance metrics: ROC curve, types of errors, overfitting & underfitting, model evaluation techniques (holdout, random sampling, cross‑validation, bootstrap) · Ensemble methods: bagging & boosting, gradient boosting, random forests, committee machines

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