In machine learning (ML), data quality has direct impact on model quality. This is why data scientists and data engineers spend significant amount of time perfecting training datasets. Nevertheless, no dataset is perfect—there are trade-offs to the preprocessing techniques such as oversampling, normalization, and imputation. Also, mistakes and errors could creep in at various stages of data analytics pipeline.
In this post, you will learn how to use built-in analysis types in Amazon SageMaker Data Wrangler to help you detect the three most common data quality issues: multicollinearity, target leakage, and feature correlation.
Data Wrangler is a feature of Amazon SageMaker Studio which provides an end-to-end solution for importing, preparing, transforming, featurizing, and analyzing data. The transformation recipes created by Data Wrangler can integrate easily into your ML workflows and help streamline data preprocessing as well as feature engineering using little to no coding. You can also add your own

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