Web Reference: Understand the steps of cleaning raw data, integrating data, reducing and reshaping data. Be able to apply basic techniques for dealing with common problems with raw data including missing data, inconsistent data, and data from multiple sources. Feb 7, 2026 · Real-world data is often incomplete, noisy, and inconsistent, which can lead to incorrect results if used directly. Data preprocessing in data mining is the process of cleaning and preparing raw data so it can be used effectively for analysis and model building. Mar 12, 2025 · Data preprocessing transforms data into a format that's more easily and effectively processed in data mining, ML and other data science tasks. The techniques are generally used at the earliest stages of the ML and AI development pipeline to ensure accurate results.
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