在我从sklearn Stratifiednfold返回的索引中,如何从每个折叠创建一个对应的数据框?
import javafx.application.Application;
import javafx.geometry.BoundingBox;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class DragAndDropApp2 extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage stage) throws Exception {
Label label = new Label("Drag me!");
label.setStyle("-fx-background-color: red;");
StackPane stackPane = new StackPane(label);
Scene scene = new Scene(stackPane, 400, 400);
stage.setScene(scene);
stage.show();
label.setOnMouseReleased(event -> {
BoundingBox bounds = new BoundingBox(stage.getX(), stage.getY(), stage.getWidth(), stage.getHeight());
if (!bounds.contains(new Point2D(event.getScreenX(), event.getScreenY()))) {
Scene newScene = new Scene(new StackPane(new Label("New window")), 400., 400.);
Stage newStage = new Stage();
newStage.setScene(newScene);
newStage.setX(event.getScreenX());
newStage.setY(event.getScreenY());
newStage.show();
}
});
}
}
打印出带有索引的列表。如何将这些映射回我的原始数据框?
我需要它们,因为我想在对它运行texclassification模型之前将增强数据添加到trainingdata中。
答案 0 :(得分:1)
您可以使用以下索引列表来过滤原始数据框:
df = pd.DataFrame({'foo': ['a', 'b', 'c', 'd', 'e']})
indices = [0, 2, 4]
df = df[df.index.isin(indices)]
输出:
foo
0 a
2 c
4 e