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Neural Network for Recognition of Handwritten Digits in C#

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14 Mar 2012MIT9 min read 308K   48K   217  
This article is an example of an artificial neural network designed to recognize handwritten digits.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace HandwrittenRecogniration
{
    public struct BackPropagationParameters
    {
        public uint m_AfterEvery;
        public double m_EtaDecay;
        public double m_InitialEta;
        public double m_MinimumEta;
        public string m_strInitialEtaMessage;
        public string m_strStartingPatternNum;
        public uint m_StartingPattern;
        public uint m_cNumThreads;
        public bool m_bDistortPatterns;
        public double m_EstimatedCurrentMSE;
    
    };

    public partial class BackPropagationParametersForm : Form
    {
   
        private BackPropagationParameters m_Parameters;
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        public void SetBackProParameters(BackPropagationParameters value)
        {
            m_Parameters = value;
            textBoxAfterEveryNBackPropagations.Text = m_Parameters.m_AfterEvery.ToString();
            textBoxBackThreads.Text = m_Parameters.m_cNumThreads.ToString();
            textBoxEstimateofCurrentMSE.Text = m_Parameters.m_EstimatedCurrentMSE.ToString();
            textBoxILearningRateEta.Text = m_Parameters.m_InitialEta.ToString();
            textBoxLearningRateDecayRate.Text = m_Parameters.m_EtaDecay.ToString();
            textBoxMinimumLearningRate.Text = m_Parameters.m_MinimumEta.ToString();
            textBoxStartingPatternNumber.Text = m_Parameters.m_StartingPattern.ToString();
            checkBoxDistortPatterns.Checked = m_Parameters.m_bDistortPatterns;
        }
        public BackPropagationParameters GetBackProParameters()
        {
            return m_Parameters;
        }
        public BackPropagationParametersForm()
        {
            InitializeComponent();
            m_Parameters.m_AfterEvery = 0;
            m_Parameters.m_bDistortPatterns = true;
            m_Parameters.m_cNumThreads = 0;
            m_Parameters.m_EstimatedCurrentMSE = 0;
            m_Parameters.m_EtaDecay = 0;
            m_Parameters.m_InitialEta = 0;
            m_Parameters.m_MinimumEta = 0;
            m_Parameters.m_StartingPattern = 0;
            m_Parameters.m_strInitialEtaMessage = "";
            m_Parameters.m_strStartingPatternNum = "";
        }
     

        private void button1_Click(object sender, EventArgs e)
        {
            m_Parameters.m_AfterEvery = Convert.ToUInt32(textBoxAfterEveryNBackPropagations.Text);
            m_Parameters.m_cNumThreads = Convert.ToUInt32(textBoxBackThreads.Text);
            m_Parameters.m_EstimatedCurrentMSE = Convert.ToDouble(textBoxEstimateofCurrentMSE.Text);
            m_Parameters.m_InitialEta = Convert.ToDouble(textBoxILearningRateEta.Text);
            m_Parameters.m_EtaDecay = Convert.ToDouble(textBoxLearningRateDecayRate.Text);
            m_Parameters.m_MinimumEta = Convert.ToDouble(textBoxMinimumLearningRate.Text);
            m_Parameters.m_StartingPattern = Convert.ToUInt32(textBoxStartingPatternNumber.Text);
            m_Parameters.m_bDistortPatterns = checkBoxDistortPatterns.Checked;
        }
    }
}

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This article, along with any associated source code and files, is licensed under The MIT License


Written By
Vietnam Maritime University
Vietnam Vietnam
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