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トップに関する質問機械学習のエラーについて

編集履歴

質問編集履歴

1

ソースコードとエラーの追加

2019/10/06 14:57

投稿

rikubon_
rikubon_

スコア39

test CHANGED
File without changes
test CHANGED
@@ -8,7 +8,51 @@
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  ```
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+ ValueError Traceback (most recent call last)
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+ <ipython-input-106-badfaf7f9db2> in <module>
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+ 2 lr = LogisticRegression()
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+ 3 lr.fit(x_train, y_train)
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+ ----> 4 lr.predict(x_test)
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+ /opt/conda/lib/python3.6/site-packages/sklearn/linear_model/base.py in predict(self, X)
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+ 287 Predicted class label per sample.
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+ 288 """
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+ --> 289 scores = self.decision_function(X)
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+ 290 if len(scores.shape) == 1:
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+ 291 indices = (scores > 0).astype(np.int)
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+ /opt/conda/lib/python3.6/site-packages/sklearn/linear_model/base.py in decision_function(self, X)
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+ 268 if X.shape[1] != n_features:
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+ 269 raise ValueError("X has %d features per sample; expecting %d"
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+ --> 270 % (X.shape[1], n_features))
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+ 271
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+ 272 scores = safe_sparse_dot(X, self.coef_.T,
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- X has 4 features per sample; expecting 5
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+ ValueError: X has 4 features per sample; expecting 5
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@@ -24,7 +68,107 @@
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  ```ここに言語名を入力
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+ # 欠損値の補完
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+ train_age_mean = train['Age'].mean()
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+ train.fillna(value={'Age':train_age_mean}, inplace=True)
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+ train['Age'] = train['Age'].astype(int)
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+ # 特徴量の削除
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+ train.drop('PassengerId', axis=1, inplace=True)
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+ train.drop('Name', axis=1, inplace=True)
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+ train.drop('Ticket', axis=1, inplace=True)
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+ train.drop('Cabin', axis=1, inplace=True)
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+ train.drop('Embarked', axis=1, inplace=True)
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+ # 特徴量の値の変化
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+ train.replace({'male':0, 'female':0}, inplace=True)
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+ # 特徴量エンジニアリング
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+ train['familysize'] = train['SibSp'] + train['Parch'] + 1
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+ train.drop('SibSp', axis=1, inplace=True)
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+ train.drop('Parch', axis=1, inplace=True)
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+ #train['Fare'] = train['Fare'].astype(int)
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+ train.drop(train.columns[np.isnan(train).any()], axis=1, inplace=True)
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+ # 欠損値の補完
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+ test_age_mean = test['Age'].mean()
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+ test.fillna(value={'Age':test_age_mean}, inplace=True)
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+ test['Age'] = test['Age'].astype(int)
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+ # 特徴量の削除
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+ test.drop('PassengerId', axis=1, inplace=True)
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+ test.drop('Name', axis=1, inplace=True)
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+ test.drop('Ticket', axis=1, inplace=True)
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+ test.drop('Cabin', axis=1, inplace=True)
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+ test.drop('Embarked', axis=1, inplace=True)
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+ # 特徴量の値の変化
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+ test.replace({'male':0, 'female':0}, inplace=True)
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+ # 特徴量エンジニアリング
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+ test['familysize'] = test['SibSp'] + test['Parch'] + 1
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+ test.drop('SibSp', axis=1, inplace=True)
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+ test.drop('Parch', axis=1, inplace=True)
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+ #train['Fare'] = train['Fare'].astype(int)
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+ test.drop(test.columns[np.isnan(test).any()], axis=1, inplace=True)
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+ train
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+ # 説明変数と目的変数の定義
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+ train = train[train.columns[::-1]]
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+ x_train = train.loc[:, :'Pclass']
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+ y_train = train.loc[:, 'Survived']
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+ x_test = test
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- ソースコード
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+ x_test
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+ # モデルの作成
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+ lr = LogisticRegression()
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+ lr.fit(x_train, y_train)
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+ lr.predict(x_test)
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  ```
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