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Training Z strategy with different AssetsFix.csv #469326
11/10/17 23:44
11/10/17 23:44
Joined: Jun 2013
Posts: 1,609
D
DdlV Offline OP
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DdlV  Offline OP
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D

Joined: Jun 2013
Posts: 1,609
Hi all,

I'm probably not remembering something right, so would appreciate help/clarification!

Using Z3 since it Tests faster. laugh I install 1.66.5, and Test Z3. Results are per the manual.

I replace AssetsFix.csv with my own Broker's parameters and reTest. Results are different, as expected - unacceptably worse, in fact.

I Train Z3 and it downloads data and creates a new Z3.par. I reTest expecting better results, as presumably Z3 has now been Trained to my AssetsFix.csv. However, the Test results are exactly the same as before Training.

What am I missing? Why did the Train not improve the Test results? Is there no way to Train to my AssetsFix.csv?

Thanks.

Re: Training Z strategy with different AssetsFix.csv [Re: DdlV] #469328
11/11/17 00:45
11/11/17 00:45
Joined: Jul 2017
Posts: 25
Bangkok
JoFo Offline
Newbie
JoFo  Offline
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Joined: Jul 2017
Posts: 25
Bangkok
For me the Z Systems generate random trades and can only be profitable with a tuned Assetsfix what have nothing to do with reality.

Money for nothing.

Re: Training Z strategy with different AssetsFix.csv [Re: JoFo] #469330
11/11/17 11:44
11/11/17 11:44
Joined: Jul 2000
Posts: 27,977
Frankfurt
jcl Offline

Chief Engineer
jcl  Offline

Chief Engineer

Joined: Jul 2000
Posts: 27,977
Frankfurt
Test results are not different when you modify Z3.par. Z3.par is for live trading, the backtest uses Z3_1.par .. Z3_12.par. - The only asset parameter with a possible effect on Z3 training is Rollover. But then the Rollover must be rather extreme - better check the entered parameters.

Re: Training Z strategy with different AssetsFix.csv [Re: DdlV] #469338
11/11/17 15:03
11/11/17 15:03
Joined: Feb 2015
Posts: 652
Milano, Italy
M
MatPed Offline
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MatPed  Offline
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Joined: Feb 2015
Posts: 652
Milano, Italy
Hi Ddlv,
I trade with Oanda and have the same divergent results on Z systems. I guess that the main issue comes from the FAC parameters calculated from other brokers .

I do not find z systems very useful, without having the opportunity to fully train and re-train from beginning and the freedom to modify the ENDDATE.

I hope this will change soon or later.

Ciao

Re: Training Z strategy with different AssetsFix.csv [Re: MatPed] #469343
11/11/17 19:22
11/11/17 19:22
Joined: Jun 2013
Posts: 1,609
D
DdlV Offline OP
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DdlV  Offline OP
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Joined: Jun 2013
Posts: 1,609
Thanks all!

@jcl:
Thanks for the clarification. Is this in the manual somewhere? Sorry if I missed it.

Followups:
Do I understand correctly that there is therefore no way to verify the results produced by the Train? I.e., what Trade results would be expected using the new Z3.par and my Broker's values?

My AssetsFix.csv came from the Download script without any changes - are Roll values still suspect in that case?

@MatPed:
Agreed. The Z Systems have yet to completely satisfy my Proof-Of_Concept perspective. But (aside from Z5 frown ) they haven't completely crashed and burned yet either...

How long have you been on Oanda? Has it been an OK/good experience?

Thanks again all.

Re: Training Z strategy with different AssetsFix.csv [Re: DdlV] #469361
11/12/17 14:24
11/12/17 14:24
Joined: Feb 2015
Posts: 652
Milano, Italy
M
MatPed Offline
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MatPed  Offline
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M

Joined: Feb 2015
Posts: 652
Milano, Italy
Originally Posted By: DdlV
Thanks all!

How long have you been on Oanda? Has it been an OK/good experience?

Thanks again all.


One year, mor or less. So far so good, but tts a MM broker not the best... No ETFs, Stocks, Futures and Options are the real downside...

Re: Training Z strategy with different AssetsFix.csv [Re: MatPed] #469385
11/14/17 06:03
11/14/17 06:03
Joined: Jun 2013
Posts: 1,609
D
DdlV Offline OP
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DdlV  Offline OP
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D

Joined: Jun 2013
Posts: 1,609
Hi jcl. Would appreciate your comments on the followups:

Do I understand correctly that there is therefore no way to verify the results produced by the Train? I.e., what Trade results would be expected using the new Z3.par and my Broker's values?

My AssetsFix.csv came from the Download script without any changes - are Roll values still suspect in that case?

Thanks.

Re: Training Z strategy with different AssetsFix.csv [Re: DdlV] #469387
11/14/17 10:52
11/14/17 10:52
Joined: Jul 2000
Posts: 27,977
Frankfurt
jcl Offline

Chief Engineer
jcl  Offline

Chief Engineer

Joined: Jul 2000
Posts: 27,977
Frankfurt
Depends on whether you train or retrain. Retraining affects only Z3.par. Full Training affects all .par files. Of course you will normally still get the same backtest results, since you're using the same historical data.

I do not think that a different AssetsFix can have a noticeable effect on training. Except maybe in extreme cases, such as a very different Rollover, by factor 10 or so. In such a case the training would possibly generate parameters that close trades a bit earlier. If one of your AssetsFix values is completely wrong, you'll get bad results in the backtest. But the problem should be normally easy to spot in the asset list and the performance report.

Re: Training Z strategy with different AssetsFix.csv [Re: jcl] #469389
11/14/17 17:05
11/14/17 17:05
Joined: Jun 2013
Posts: 1,609
D
DdlV Offline OP
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DdlV  Offline OP
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D

Joined: Jun 2013
Posts: 1,609
Thanks jcl.

It appears that the Z systems (at least Z3) can only be reTrained - whether Trading or not, pressing Train only updates Z3.par. Is this as expected? Or is there some way to full Train Z3?

Thanks.

Re: Training Z strategy with different AssetsFix.csv [Re: DdlV] #469431
11/15/17 16:40
11/15/17 16:40
Joined: Jul 2000
Posts: 27,977
Frankfurt
jcl Offline

Chief Engineer
jcl  Offline

Chief Engineer

Joined: Jul 2000
Posts: 27,977
Frankfurt
You're right. They have no difference in the code between training and retraining.

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