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90% accuracy but widely varying results with each test

  • #1
  • First Post: Sep 24, 2009 11:32pm Sep 24, 2009 11:32pm
Hi metatrader experts
I have a program that when I run simulations on gives me different results each time. As soon as one test finishes I press start and another is completed but the results are different.
Is this normal?
ta
max
Gravity goes both ways in forex...
  • #2
  • Sep 25, 2009 12:01am Sep 25, 2009 12:01am
How different?
  • #3
  • Sep 25, 2009 12:02am Sep 25, 2009 12:02am
I'm glad you're around

it compounds so very different!

max
Gravity goes both ways in forex...
  • #4
  • Sep 25, 2009 12:08am Sep 25, 2009 12:08am
last 20 days, non compounding give 691, 535, 539, and 592

max
Gravity goes both ways in forex...
  • #5
  • Sep 25, 2009 12:14am Sep 25, 2009 12:14am
ok do this, after the test finishes, save the chart as a template with the ea's name

next time u run the test, youl see the arrows are also there from the previous test

doing this repeatedly will show that there is a time error

this error makes all test's unreliable

thats another bucket shop horror

iv noticed that for years now

i only use tester to see that my logic is right, the test its self is useless
  • #6
  • Sep 25, 2009 12:22am Sep 25, 2009 12:22am
Quoting trendchaser
ok do this, after the test finishes, save the chart as a template with the ea's name

next time u run the test, youl see the arrows are also there from the previous test

doing this repeatedly will show that there is a time error

this error makes all test's unreliable

thats another bucket shop horror

iv noticed that for years now

i only use tester to see that my logic is right, the test its self is useless
That is a bit crap.

Where it is really annoying is not when deciding whether a system is working or not but optimising it. Each time the system does a 'circuit' it will get different results. I guess its still a guide but rubbish.

max
Gravity goes both ways in forex...
  • #7
  • Sep 25, 2009 12:54am Sep 25, 2009 12:54am
if you do what i said, youl notice the difference in the tester, is time

it seems the time of each candle can change per test

iv noticed many things in my years

all i can say is that tester will make you think things that are not so

its not reliable
  • #8
  • Sep 25, 2009 7:40am Sep 25, 2009 7:40am
Quoting trendchaser
if you do what i said, youl notice the difference in the tester, is time

it seems the time of each candle can change per test

iv noticed many things in my years

all i can say is that tester will make you think things that are not so

its not reliable
You know what, the more I think about this the more I don't uinderstand it. If I added up I would make mistakes but this is a computer adding up the same data time and time again. so Why are the results so different. Backtesting is almost worthless
max
Gravity goes both ways in forex...
  • #9
  • Sep 25, 2009 7:43am Sep 25, 2009 7:43am
What backtesting method are you using?

Open prices?
Control points?
Each Tick?
  • #10
  • Sep 25, 2009 7:54am Sep 25, 2009 7:54am
Each tick which is why its so weird. You've got plenty of systems, pick one, run it on the same two month period five times. Do you get the same results?

max
Gravity goes both ways in forex...
  • #11
  • Sep 25, 2009 8:29am Sep 25, 2009 8:29am
Yes, in fact. I do
  • #12
  • Last Post: Sep 25, 2009 11:16pm Sep 25, 2009 11:16pm
You see thats weird, because for the last four days or so I have had this problem but today it is working perfectly. Maybe its to do with forex mrkets being closed or maybe ron has just fixed it?

ta

max
Gravity goes both ways in forex...
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