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RE: [amibroker] Re: Help - Unrealistic Results (for Stewart)



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I 
didn't comment before, but in my opinion, using a one cent commission rate is 
not very realistic.   Many in this group tend to use 0.5%.  I use 
1.0% to make sure that I include adequate slippage on trades that enter at the 
next open.
<FONT face=Arial color=#0000ff 
size=2> 
<FONT face=Arial color=#0000ff 
size=2>Another thing... I don't know about anyone else, but I ALWAYS have my 
interest rate set to zero.   Otherwise, a system that isn't in the 
market very often or uses a small percentage of available capital can make 
enough money on interest to cover up deficiencies in the trading 
system.    After deciding that the system has merit and selecting 
parameters, etc., I may set the interest to some value to see how a fund using 
the system might fare.
<FONT face=Arial color=#0000ff 
size=2> 
<FONT face=Arial color=#0000ff 
size=2> 
<BLOCKQUOTE 
>
  <FONT face="Times New Roman" 
  size=2>-----Original Message-----From: Stewart 
  [mailto:stewart@xxxxxxxxxxxxxxxx]Sent: Saturday, April 19, 2003 
  6:37 PMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: 
  [amibroker] Re: Help - Unrealistic Results (for Stewart)
  
  The defaults as shown, give the results:<FONT color=#0000ff 
  size=1>
  ApplyStop(<FONT color=#0000ff 
  size=1>Optimize( <FONT color=#ff00ff 
  size=1>"Type", <FONT color=#ff00ff 
  size=1>1, <FONT face="Courier New" color=#ff00ff 
  size=1>1, <FONT face="Courier New" color=#ff00ff 
  size=1>1, 1<FONT 
  size=1> ),Optimize( 
  "Mode", <FONT 
  color=#ff00ff size=1>1,<FONT face="Courier New" 
  color=#ff00ff size=1>1, <FONT face="Courier New" 
  color=#ff00ff size=1>1, <FONT color=#ff00ff 
  size=1>1 )
  ,Optimize( 
  "Amount", <FONT 
  color=#ff00ff size=1>0, <FONT color=#ff00ff 
  size=1>0, <FONT face="Courier New" color=#ff00ff 
  size=1>0, 1<FONT 
  size=1> ),1,<FONT 
  color=#ff00ff size=1>1);
  <BLOCKQUOTE 
  >
    ----- Original Message ----- 
    <DIV 
    >From: 
    <A title=chuck_rademacher@xxxxxxxxxx 
    href="">Chuck Rademacher 
    To: <A title=amibroker@xxxxxxxxxxxxxxx 
    href="">amibroker@xxxxxxxxxxxxxxx 
    Sent: Saturday, April 19, 2003 11:35 
    PM
    Subject: RE: [amibroker] Re: Help - 
    Unrealistic Results (for Stewart)
    
    No 
    worries... we are all just trying to help and we don't expect you to divulge 
    your system... especially one that looks that good!
    <FONT face=Arial color=#0000ff 
    size=2> 
    <FONT face=Arial color=#0000ff 
    size=2>The problem is that it is hard to debug a problem when the system 
    supplied isn't the same system that produced the results 
    supplied.
    <FONT face=Arial color=#0000ff 
    size=2> 
    As 
    you can see from the other posts, several of us ran your system, either on 
    our own basket(s) of stocks or your specific stocks and (I think) we all got 
    negative returns.   There must be some sort of "future leak" 
    involved in one or more of your settings.   As you can see in your 
    results, every trade lasted exactly one day... highly suspicious and 
    possibly suggesting future leak somewhere.
    <FONT face=Arial color=#0000ff 
    size=2> 
    <FONT face=Arial color=#0000ff 
    size=2>I'll have a closer look later today and I think others are looking as 
    well.
    <FONT face=Arial color=#0000ff 
    size=2> 
    <FONT face=Arial color=#0000ff 
    size=2>The system you supplied was set up for optimisation.  Your 
    performance figures were based on only one set of parameters derived from 
    your optimisation.  It would be a HUGE benefit to anyone trying to help 
    you to know exactly which stop parameters were used to derive the 
    spectacular results.
    <FONT face=Arial color=#0000ff 
    size=2> 
    <FONT face=Arial color=#0000ff 
    size=2> 
    <FONT face=Arial color=#0000ff 
    size=2>Cheers
    <FONT face=Arial color=#0000ff 
    size=2> 
    <BLOCKQUOTE 
    >
      <FONT face="Times New Roman" 
      size=2>-----Original Message-----From: Stewart 
      [mailto:stewart@xxxxxxxxxxxxxxxx]Sent: Saturday, April 19, 2003 
      6:19 PMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: 
      [amibroker] Re: Help - Unrealistic Results
      Chuck (and Anyone Else that 
      missunderstood),
       
      I sincerely apologize if my post was 
      misleading. My original message did say "similiar", and I assumed the 
      people helping had seen that. I've been following this group for awhile 
      (although silently until fairly recently), and it seems fairly common not 
      to divulge the system specifics when trying to debug something. Having 
      said that, my actual system was almost exactly as my example, however, the 
      prices were actual composite prices that I built (e.g. Close of MSFT + 
      Close of Cisco)/2. I am fairly certain that the issue isn't with the 
      system conditions, but with the stop or other system settings, which 
      is what I was trying to highlight.
       
      Regards,
       
      Stewart
       
       
      <BLOCKQUOTE 
      >
        ----- Original Message ----- 
        <DIV 
        >From: 
        <A title=chuck_rademacher@xxxxxxxxxx 
        href="">Chuck Rademacher 
        To: <A 
        title=amibroker@xxxxxxxxxxxxxxx 
        href="">amibroker@xxxxxxxxxxxxxxx 
        
        Sent: Saturday, April 19, 2003 9:45 
        PM
        Subject: RE: [amibroker] Re: Help - 
        Unrealistic Results
        
        <FONT face=Arial color=#0000ff 
        size=2>Like a lot of people on this board, I spent some time looking at 
        this particular post in an effort to help someone with a 
        problem.
        <FONT face=Arial color=#0000ff 
        size=2> 
        <FONT face=Arial color=#0000ff 
        size=2>Also, like a lot of others, I found that the system (as 
        presented) lost money no matter which stocks I tested it 
        on.
        <FONT face=Arial color=#0000ff 
        size=2> 
        <FONT face=Arial color=#0000ff 
        size=2>Then... we get a message that the system (as presented) was only 
        "similar" to the one with the problem.
        <FONT face=Arial color=#0000ff 
        size=2> 
        <FONT face=Arial color=#0000ff 
        size=2>It's one thing to not divulge a good system to the 
        group and another to let us waste our time debugging a non-existent 
        system.
        <FONT face=Arial color=#0000ff 
        size=2> 
        <FONT face=Arial color=#0000ff 
        size=2>The original post did say it was "similar", so I'll confess to 
        reading too much into it.Send BUG 
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