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1st Place LGB Model(public:0.506, private:0.511) 2.字段含义 整个数据集分为训练集、测试集、商品数据集、商店数据集、oil。 训练集中包含date, store_nbr, item_nbr, unit_sales, onpromotion五个字段,unit_sales业务含义可以是一包薯片、1.5kg奶酪等,负数表示退货。onpromotion表示特定日期、特定商店下的特...
lgb_model = lgb.LGBMRegressor( num_leaves=256, reg_alpha=0., reg_lambda=0.01, objective='mae', metric=False, max_depth=-1, learning_rate=0.03,min_child_samples=25,n_estimators=1200, subsample=0.7, colsample_bytree=0.45 ) model=lgb_model.fit(train_x,train_dev['imp'], eval_set=[(...
1.项目背景Logit模型(Logit model,也译作“评定模型”,“分类评定模型”,又作Logistic regression,“逻辑回归”)是离散选择法模型之一,属于多重变量分析范畴,是社会学、生物统计学、临床、数量心理学、计量经济学、市场营销等统计实证分析的常用方法。本项目通过Logit算法来构建逻辑回归模型。 2.数据获取本次建模数据来...
Wood Model Ships Die Cast Products Z Gauge Marklin trains Plastic airplanes kits Bandai-Gundam Faller Car System HO Cranes Big Clearance Sale List of discontinued items Our Best Special Offers Faller 131383 Fire Brigade engine house Price$13.53 ...
二项逻辑斯谛回归模型(binomial logistic regression model)是一种分类模型,由条件概率分布P(Y|X)表示,随机变量X取值为实数,随机变量Y取值为1或0。 二项逻辑斯谛回归模型是如下的条件概率分布: w称为权值向量,b称为偏置, 有时为了方便,将权值向量和输入向量加以扩充,仍记作w,x,即w =(w(1),w(2),…,w...
Wood Model Ships Die Cast Products Z Gauge Marklin trains Plastic airplanes kits Bandai-Gundam Faller Car System HO Cranes Big Clearance Sale List of discontinued items Our Best Special Offers Faller 131383 Fire Brigade engine house Price$13.53 ...
1.项目背景Logit模型(Logit model,也译作“评定模型”,“分类评定模型”,又作Logistic regression,“逻辑回归”)是离散选择法模型之一,属于多重变量分析范畴,是社会学、生物统计学、临床、数量心理学、计量经济学、市场营销等统计实证分析的常用方法。本项目通过Logit算法来构建逻辑回归模型。 2.数据获取本次建模数据来...