Description: Z-score filtering is a statistical technique used to identify and remove outliers in a dataset. The Z-score measures how many standard deviations a data point is above or below the mean of the dataset. A high or low Z-score indicates that the data point is unusual compared to the rest of the data. This technique is particularly useful in the context of data preprocessing and cleaning, where data quality is crucial for model performance. By applying Z-score filtering, analysts can ensure that the data used to train models is representative and not distorted by extreme values. This helps improve the accuracy and generalization of the model, as outliers can lead to erroneous decisions during the training process. In summary, Z-score filtering is a valuable tool in data cleaning, allowing data scientists and machine learning engineers to optimize their models more effectively.
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