Back again after 18 months..
I'm trading TF and EMD with NeuralDT.
Just thought you all might like an update as to the state of the NeuralDT systems. Last time I posted, the systems were about 20% in drawdown. This continued to about 35%, so back in September 2010 I decided to re-optimise all of the NDT systems from scratch. However, instead of using just the standard TradeStation optimisation function as described in Mike Bryant's manual, I've used a more sophisticated process called Walk Forward Optimisation.
The Walk Forward Optimiser (WFO) I used was from
GRAIL Global Futures Trading System for TradeStation. I know the website looks rather “Mickey Mouse" but behind the garish colours the tools are actually rather good (so much so that they have been acquired by TradeStation and built in as part of their lastest version). I won't go into the full details of how WFO works but the idea is that one constantly re-optimises a system after fixed periods of time.
Since September 2010 I have been running the following parameters for NDT 60 EMD:
FloorFr = 2.2
TrailPr = 36
StopFr = 2
w1 = 0.54
w2 = -0.32
w3 = 1.4
w4 = -1.31
w5 = -0.99
w6 = -1.49
The optimisation process suggested that these parameters would produce an average gain per contract of $8900 per year. I ran this for nine months and achieved approximately $7000 per EMD contract over that period which suggests that the system is trading according to plan. The drawdown over that period was very modest.
In June this year (2011) it came to the time when the systems needed re-optimising and the following parameters for NDT 60 EMD are now current:
FloorFr = 0.9
TrailPr = 26
StopFr = 0.9
w1 = -1.65
w2 = 1.94
w3 = 1.43
w4 = -1.42
w5 = -1.93
w6 = -3.07
The new optimisation predicts an average yearly gain of $10,800 per year per contract. Please note that while performing many of these Walk Forward Optimisations I have rarely seen any average yearly gains greater than $12,000 per contract (at least while keeping drawdown within sensible limits). Hence I'm still of the opinion that the NDT 60 systems are viable and worth trading. Here is the TS equity curve for those parameters:
However, more interesting is the WFO optimization report:
Although slightly worse than the current TS report in terms of total gains, this actually shows what would have happened if we had traded the system whilst re-optimizing at each of the vertical lines. The periods between the green lines are all out-of-sample sections, so much more likely to be realistic than the standard TS backtest results.
I have also re-optimised NDT 60 TF with similar results. The whole optimisation process takes about two days but is a lot simpler than the method suggested in the original NDT manual.
Incidentally, the WFO optimisation process has shown that the NDT 1 min systems are not really robust enough to trade so I have given up on these and now only trade the 60 min versions. Here's a WFO equity plot that shows why:
I hope this has been useful for anyone out there who has also purchased the NDT systems in the past.
Best regards