Description: Data cleansing is the process of identifying and correcting inaccuracies or inconsistencies in data to improve its quality. This process is fundamental in the realm of data preprocessing, as it ensures that the information used in analysis and models is accurate and reliable. Cleansing involves various techniques, such as removing duplicates, correcting typographical errors, normalizing formats, and validating data. By improving data quality, the risks of making erroneous decisions based on faulty information are minimized. Data cleansing not only focuses on correcting errors but also on identifying patterns and trends that may indicate underlying issues in data collection. This process is essential in fields such as data science, artificial intelligence, and business analytics, where data quality can significantly influence the outcomes obtained. In summary, data cleansing is a critical step in the data lifecycle, ensuring that information is useful and effective for decision-making.
