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    Acrary is not 100% reliable

    Thanks for the quick answer :) If you don't mind.. do you use daily or intraday data to develop/test range bound model? I can hardly imagine testing range bound 1-day holding period model with daily data spanning over many years.
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    Acrary is not 100% reliable

    Acrary, I have but one last question. In your system development thread you used three models where you explained importance of correlation. You said the first model had an edge and the other two had no edge. Nevertheless, how do you come up with three models that trade the same market with...
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    Best way to become a system trader

    If you want objective analysis, learn to test your ideas with statistical tests. Test every idea to see if it's better than random, i.e. significant.
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    MFE and MAE Analysis

    There is nothing special about 2%, it may be overfit to historical data. You need to adjust variables according to current volatility. Fixed values don't work in the long run (cost me to learn this fact two years ago). One day 2% may sound like a small value, a few months later it may look like...
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    MFE and MAE Analysis

    You may try to look at volatility normalized MAE and MFE. If you exit at EOD, you're trying to catch fat-tail moves. Look to place initial stop narrow enough to cut off negative outliers, but wide enough to leave positive outliers intact. Again, your stops should be expressed in volatility...
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    Using Neural Networks to Identify Chart Patterns

    In that case, if I had to do this stuff, I would use Hull moving average to approximate price action. Then convert time series of moving average into input data as described in the youtube example: The rest is training the multilayer perceptron to recognize the patterns you want. P.S...
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    Using Neural Networks to Identify Chart Patterns

    Are you looking for something like this? http://www.youtube.com/watch?v=2XOMkkGafGc
  8. I

    I have found the John Madden of trading

    This video is useful for insomnia treatment :D And the last words were: "so, it's quite basic".
  9. I

    Monte Carlo analysis with strange results

    Impossible to tell without knowing the details. But certainly, looks like a bug somewhere.
  10. I

    how do you evaluate the expected profitability of a portfolio of automated trading sy

    This is a simple problem that can be addressed objectively. What you're looking at is 3 risk weights. You need to find an optimal combination. The simplest approach would be to maximize Sharpe ratio. This is how you can do it: 1) take monthly results of the systems 2) run through all...
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    What is the best book on technical analysis?

    A similar story I heard from my uncle :) Still don't believe in dowsing. Regarding TA I think you have to define what it is, and then decide if it has any validity. I think there are two categories of TA. One is "magic" BS, such as use of fibonacci numbers and similar fantasy. The other is...
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    E-mini SP Counter Trend Challenge

    What do you mean by "optimization run"?
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    Expensive Trading Set-Up = Profitable Trader?

    I don't think it has any correlation with profitability (whichever way you define it). But it sure correlates with trading style. If you're daytrader/scalper that makes tens-hundreds-thousands trades per day in many different instruments then you probably wish to have as many monitors as...
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    why are traders ugly and fat?

    It would be interesting to see if all this consumption of unnecessary chemicals has any correlation with trading results. But I guess it's impossible to measure.
  15. I

    why are traders ugly and fat?

    Testosterone effect :D
  16. I

    Six Sigma Events

    Old news
  17. I

    why are traders ugly and fat?

    Shouldn't trading be emotionless and rational as much as possible? Isn't testosterone affecting your emotions/aggressiveness? If so, how does it help trading then? By the way, high levels of testosterone causes baldness.
  18. I

    Backtesting...?....

    My opinion about backtesting is that out-of-sample test should be done in the last step of development. Otherwise, if you tweak your system after out-of-sample test, you're just overfitting it to the whole dataset, and out-of-sample testing becomes meaningless.
  19. I

    are markets truly random?

    A few notes on your generator: 1) you use excel's RAND() function, which generates values of uniform distribution. 2) therefore you get daily ranges from 0 to 1 which are uniformly distributed, i.e. chance of any range is equal to any other range between 0 and 1. 3) in reality...
  20. I

    are markets truly random?

    They're random in a way that they're not 100% predictable.
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