def optimal_binning_boundary(x: pd.Series, y: pd.Series,leaf=3, nan: float = -999.,min_per=0.1) -> list: ''' 利用决策树获得最优分箱的边界值列表 leaf: 最大叶子节点数 ''' boundary = [] # 待return的分箱边界值列表 x = x.fillna(nan).values # 填充缺失值 y = y.values clf =...
fillna(nan) boundary = optimal_binning_boundary(x, y, nan) # 获得最优分箱边界值列表 df = pd.concat([x, y], axis=1) # 合并x、y为一个DataFrame,方便后续计算 df.columns = ['x', 'y'] # 特征变量、目标变量字段的重命名 df['bins'] = pd.cut(x=x, bins=boundary, right=False) # ...
from sklearn.tree import DecisionTreeClassifier def optimal_binning_boundary(x, y): ''' 利用决策树获得最优分箱的边界值列表,利用决策树生成的内部划分节点的阈值,作为分箱的边界 ''' boundary = [] # 待return的分箱边界值列表 x = x.fillna(-1).values # 填充缺失值 y = y.values clf = Decis...
This book is a deep dive into the exciting world of machine learning. What's unique about this book is the clarity with which it explains concepts from first principles and teaches by example in a way that is accessible to a wide audience. You will learn how to implement key algorithms fr...
Finding separating boundary with support vector machines Understanding how SVM works through different use cases Case 1 – identifying a separating hyperplane Case 2 – determining the optimal hyperplane Case 3 – handling outliers Implementing SVM Case 4 – dealing with more than two classes...
Finding separating boundary with support vector machines Understanding how SVM works through different use cases Case 1 – identifying a separating hyperplane Case 2 – determining the optimal hyperplane Case 3 – handling outliers Implementing SVM Case 4 – dealing with more than two classes The kerne...
Binning algorithm for accurate computer aided device modeling. Performance of Reliable Transport Protocol over IEEE 802.11 Wireless LAN: Analysis and Enhancement. "Rolling boles, optimal XML structure integrity for updating operations." A Graph-Based Model for Disconnected Ad Hoc Networks. Migrating...
Binning algorithm for accurate computer aided device modeling. Performance of Reliable Transport Protocol over IEEE 802.11 Wireless LAN: Analysis and Enhancement. "Rolling boles, optimal XML structure integrity for updating operations." A Graph-Based Model for Disconnected Ad Hoc Networks. Migrating...
") # 2. 决策树分箱 if binning_method in ['entropy', 'bestKS']: group = BestKS_dsct(count, max_interval, binning_method) # group = optimal_binning_boundary(data['A'], data['E'], 4) else: exit(code='无法识别分箱方法') group.sort() # 3. 根据var_type修改返回的group样式(var...