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pashok25 [27]
3 years ago
7

The balanced F measure (a.k.a. F1) is defined as the harmonic mean of precision and recall. What is the advantage of using the h

armonic mean rather than "averaging" (using the arithmetic mean)?
Computers and Technology
1 answer:
ollegr [7]3 years ago
4 0

Answer:

Because the value derived from harmonic mean reflects the credible result of search engine

Explanation:

Given that the value of arithmetic mean tends to be closer to the highest value between Precision and Recall, while the value of the harmonic mean, is the lowest value between Precision and Recall, in a situation where all documents relevant to a query are returned, where R = 1 and P is closer to 0, the arithmetic mean will be greater than 0.5 and will not reflects the credible result of search engine

However, if the harmonic mean is utilized, the value will be closer to the low Precision value, hence it closely reflects the credible result of search engine

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A custom window shade designer charges a base fee of $50 per shade. In addition, charges are added for certain styles, sizes, an
jeka94

Answer:

Check the explanation

Explanation:

* Filename: ShadeDesigner.java

* Programmer: Jamin A. Bishop

* Date: 3/31/2012

* version 1.00 2012/4/2

*/

import java. awt.*;

import java. awt. event.*;

import java. text. DecimalFormat;

import javax. swing.*;

import javax. swing. event. ListSelectionEvent;

import javax. swing. event. ListSelectionListener;

public class ShadeDesigner extends JFrame

{

private String[] styles = {"Regular Shades", "Folding Shades", "Roman Shades"};

private String[] size = {"25 Inches Wide", "27 Inches Wide",

"32 Inches Wide", "40 Inches Wide"};

private String[] colors = {"Natural", "Blue", "Teal",

"Red", "Green"};

private JLabel banner;// To display a banner

private JPanel bannerPanel;// To hold the banner

private JPanel stylesPanel;//

private JPanel sizePanel;//

private JPanel colorPanel;

private JPanel buttonPanel;//

private JList stylesList;

private JList sizeList;

private JList colorList;

private JTextField Styles;

private JTextField Size;

private JTextField Color;

private JButton calcButton;

private JButton ExitButton;

private double totalCharges = 50.00;

//Constants

private final int ROWS = 5;

private final double regularCost = 0.00;//base price for the blinds

private final double foldingCost = 10.00;//extra cost for folding blinds

private final double romanCost = 15.00;//extra cost for roman blinds

private final double twentyfiveInCost = 0.00; //extra cost for 25" blinds

private final double twentySevenInCost = 2.00;//extra cost for 27" blinds

private final double thirtyTwoInCost = 4.00;//extra cost for 32" blinds

private final double fourtyInCost = 6.00;//extra cost for 40" blinds

private final double naturalColorCost = 5.00;//extra cost for color

public ShadeDesigner()

{

//display a title

setTitle("Shade Designer");

// Specify what happens when the close button is clicked.

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Create the banner on a panel and add it to the North region.

buildBannerPanel();

add(bannerPanel, BorderLayout. NORTH);

stylesPanel();

add(stylesPanel, BorderLayout. WEST);

sizePanel();

add(sizePanel, BorderLayout. CENTER);

colorPanel();

add(colorPanel, BorderLayout. EAST);

buttonPanel();

add(buttonPanel, BorderLayout. SOUTH);

pack();

setVisible(true);

}

//build the bannerpanel

private void buildBannerPanel()

{

bannerPanel = new JPanel();

bannerPanel.setLayout(new FlowLayout(FlowLayout.CENTER));

banner = new JLabel("Shade Designer");

banner.setFont(new Font("SanSerif", Font.BOLD, 24));

bannerPanel.add(banner);

}

//stylepanel

private void stylesPanel()

{

JLabel styleTitle = new JLabel("Select a Style.");

stylesPanel = new JPanel();

stylesPanel. setBorder(BorderFactory. createEmptyBorder(5,5,5,5));

stylesList = new JList (styles);

stylesList.setVisibleRowCount(ROWS);

JScrollPane stylesScrollPane = new JScrollPane(stylesList);

stylesList. setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

stylesList. addListSelectionListener(new stylesListListener());

stylesPanel. setLayout(new BorderLayout());

stylesPanel. add(styleTitle, BorderLayout. NORTH);

stylesPanel. add(stylesScrollPane, BorderLayout. CENTER);

Styles = new JTextField (5);

Styles. setEditable(false);

//stylesPanel. add(StylesLabel, BorderLayout. CENTER);

stylesPanel. add(Styles, BorderLayout. SOUTH);

}

private class stylesListListener implements ListSelectionListener

{

public void valueChanged (ListSelectionEvent e)

{

String selection = (String) stylesList. getSelectedValue();

Styles. setText(selection);

}

}

//size panel

private void sizePanel()

{

JLabel sizeTitle = new JLabel("Select a Size.");

sizePanel = new JPanel();

sizePanel. setBorder(BorderFactory. createEmptyBorder(5,5,5,5));

sizeList = new JList (size);

sizeList.setVisibleRowCount(ROWS);

JScrollPane stylesScrollPane = new JScrollPane(sizeList);

sizeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

sizeList.addListSelectionListener(new sizeListListener());

sizePanel. setLayout(new BorderLayout());

sizePanel. add(sizeTitle, BorderLayout. NORTH);

sizePanel. add(stylesScrollPane, BorderLayout. CENTER);

//sizeLabel = new JLabel("Style Selected: ");

Size = new JTextField (5);

Size.setEditable(false);

//stylesPanel. add(StylesLabel, BorderLayout. CENTER);

sizePanel. add(Size, BorderLayout. SOUTH);

}

private class sizeListListener implements ListSelectionListener

{

public void valueChanged (ListSelectionEvent e)

{

String selection = (String) sizeList. getSelectedValue();

Size. setText(selection);

}

}

6 0
3 years ago
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