[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-07-27。"],[[["This module emphasizes the critical role of data quality in machine learning projects, highlighting that it significantly impacts model performance more than algorithm choice."],["Machine learning practitioners typically dedicate a substantial portion of their project time (around 80%) to data preparation and transformation, including tasks like dataset construction and feature engineering."],["The module covers key concepts in data preparation, such as identifying data characteristics, handling unreliable data, understanding data labels, and splitting datasets for training and evaluation."],["Learners will gain insights into techniques for improving data quality, mitigating issues like overfitting, and interpreting loss curves to assess model performance."],["This module builds upon foundational machine learning concepts, assuming familiarity with topics like linear regression, numerical and categorical data handling, and basic machine learning principles."]]],[]]
