分类
确定对象属于哪个类别。
应用: 垃圾邮件检测，图像识别。 算法Algorithms: Gradient boosting, nearest neighbors, random forest, logistic regression, and more...
回归
预测与对象关联的连续值属性。
应用: 药物反应，股票价格。 算法Algorithms: Gradient boosting, nearest neighbors, random forest, ridge, and more...
降维Dimensionality reduction
减少要考虑的随机变量的数量。
应用Applications: 可视化，提高效率。 算法Algorithms: PCA, feature selection, non-negative matrix factorization, and more...
模型选择Model selection
比较、验证和选择参数和模型。
应用Applications: 通过参数调整提高精度。 算法Algorithms: Grid search, cross validation, metrics, and more...
预处理Preprocessing
特征提取和归一化。
应用Applications: 转换输入数据（如文本）以用于机器学习算法。 算法Algorithms: Preprocessing, feature extraction, and more...
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