//www.algorytm.org
//uczenie sztucznego neuronu - uczenie z nauczycielem (c)2002 by Tomasz Lubiński

unit sztuczny_neuron;

interface

uses
  Windows, Messages, Math, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Edit5: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Edit6: TEdit;
    Label8: TLabel;
    Label9: TLabel;
    Edit7: TEdit;
    Edit8: TEdit;
    Label10: TLabel;
    Edit9: TEdit;
    Label11: TLabel;
    Edit10: TEdit;
    Label12: TLabel;
    GroupBox1: TGroupBox;
    RadioButton1: TRadioButton;
    RadioButton2: TRadioButton;
    RadioButton3: TRadioButton;
    RadioButton4: TRadioButton;
    RadioButton5: TRadioButton;
    Label13: TLabel;
    GroupBox2: TGroupBox;
    Button1: TButton;
    Edit11: TEdit;
    Edit12: TEdit;
    Edit13: TEdit;
    Label14: TLabel;
    Label15: TLabel;
    Label16: TLabel;
    Button2: TButton;
    procedure FormPaint(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  x,w: Array [1..5] of Real;
  y,z,e,a,p,blad: Real;
  licznik: Integer;

implementation

{$R *.DFM}

procedure TForm1.FormPaint(Sender: TObject);
begin
sleep(100);
Canvas.MoveTo(32,60);
Canvas.LineTo(197,250);
Canvas.MoveTo(120,60);
Canvas.LineTo(199,250);
Canvas.MoveTo(216,60);
Canvas.LineTo(201,250);
Canvas.MoveTo(304,60);
Canvas.LineTo(203,250);
Canvas.MoveTo(392,60);
Canvas.LineTo(205,250);
Canvas.MoveTo(201,280);
Canvas.LineTo(201,320);
end;

procedure TForm1.Button1Click(Sender: TObject);
var i:Integer;
begin
a:=StrToFloat(Edit11.Text);
p:=StrToFloat(Edit12.Text);
blad:=StrToFloat(Edit13.Text);
x[1]:=StrToFloat(Edit1.Text);
x[2]:=StrToFloat(Edit2.Text);
x[3]:=StrToFloat(Edit3.Text);
x[4]:=StrToFloat(Edit4.Text);
x[5]:=StrToFloat(Edit5.Text);
w[1]:=StrToFloat(Edit6.Text);
w[2]:=StrToFloat(Edit7.Text);
w[3]:=StrToFloat(Edit8.Text);
w[4]:=StrToFloat(Edit9.Text);
w[5]:=StrToFloat(Edit10.Text);
y:=0;
for i:=1 to 5 do y:=y+x[i]*w[i];
if RadioButton1.checked then z:=0.8*y+1;
if RadioButton2.checked then
        begin
        if y>0 then z:=1 else
                if y<0 then z:=-1 else
                        z:=0;
        end;
if RadioButton3.checked then z:=1/(1+exp(-y));
if RadioButton4.checked then z:=Tanh(y);
if RadioButton5.checked then z:=exp(-y*y);
Label1.Caption:='y = ' + FloatToStr(y);
Label13.Caption:='z = ' + FloatToStr(z);
licznik:=0;
repeat
licznik:=licznik+1;
e:=p-z;
for i:=1 to 5 do w[i]:=w[i]+a*x[i]*e;
y:=0;
for i:=1 to 5 do y:=y+x[i]*w[i];
Edit6.Text:=FloatToStr(w[1]);
Edit7.Text:=FloatToStr(w[2]);
Edit8.Text:=FloatToStr(w[3]);
Edit9.Text:=FloatToStr(w[4]);
Edit10.Text:=FloatToStr(w[5]);
if RadioButton1.checked then z:=0.8*y+1;
if RadioButton2.checked then
        begin
        if y>0 then z:=1 else
                if y<0 then z:=-1 else
                        z:=0;
        end;
if RadioButton3.checked then z:=1/(1+exp(-y));
if RadioButton4.checked then z:=Tanh(y);
if RadioButton5.checked then z:=exp(-y*y);
Label1.Caption:='y = ' + FloatToStr(y);
Label1.Refresh;
Label13.Caption:='z = ' + FloatToStr(z);
Label13.Refresh;
if licznik>1000 then
        if Application.MessageBox('Wykonano 1 000 operacji. Wykonac kolejne?', 'Uwaga',  MB_YESNO) = IDNO then exit else licznik:=0;

until Abs(e)<=blad
end;

procedure TForm1.Button2Click(Sender: TObject);
var i:Integer;
begin
a:=StrToFloat(Edit11.Text);
p:=StrToFloat(Edit12.Text);
x[1]:=StrToFloat(Edit1.Text);
x[2]:=StrToFloat(Edit2.Text);
x[3]:=StrToFloat(Edit3.Text);
x[4]:=StrToFloat(Edit4.Text);
x[5]:=StrToFloat(Edit5.Text);
w[1]:=StrToFloat(Edit6.Text);
w[2]:=StrToFloat(Edit7.Text);
w[3]:=StrToFloat(Edit8.Text);
w[4]:=StrToFloat(Edit9.Text);
w[5]:=StrToFloat(Edit10.Text);
y:=0;
for i:=1 to 5 do y:=y+x[i]*w[i];
if RadioButton1.checked then z:=0.8*y+1;
if RadioButton2.checked then
        begin
        if y>0 then z:=1 else
                if y<0 then z:=-1 else
                        z:=0;
        end;
if RadioButton3.checked then z:=1/(1+exp(-y));
if RadioButton4.checked then z:=Tanh(y);
if RadioButton5.checked then z:=exp(-y*y);
Label1.Caption:='y = ' + FloatToStr(y);
Label13.Caption:='z = ' + FloatToStr(z);
e:=p-z;
for i:=1 to 5 do
        begin
        w[i]:=w[i]+a*x[i]*e;
        end;
y:=0;
for i:=1 to 5 do y:=y+x[i]*w[i];
Edit6.Text:=FloatToStr(w[1]);
Edit7.Text:=FloatToStr(w[2]);
Edit8.Text:=FloatToStr(w[3]);
Edit9.Text:=FloatToStr(w[4]);
Edit10.Text:=FloatToStr(w[5]);
if RadioButton1.checked then z:=0.8*y+1;
if RadioButton2.checked then
        begin
        if y>0 then z:=1 else
                if y<0 then z:=-1 else
                        z:=0;
        end;
if RadioButton3.checked then z:=1/(1+exp(-y));
if RadioButton4.checked then z:=Tanh(y);
if RadioButton5.checked then z:=exp(-y*y);
Label1.Caption:='y = ' + FloatToStr(y);
Label13.Caption:='z = ' + FloatToStr(z);
end;

end.