Machine learning in trading: theory, models, practice and algo-trading - page 2734

 
Renat Akhtyamov #:

from left to right or right to left.

So you even know Russian so well that you write as luck would have it?

Who are you, monster?
 
Maxim Dmitrievsky #:

So you even know Russian so well that you write as luck would have it?

what are you, monster

ptsc....

I don't give a damn about empty words, no matter how well written they are.

Especially since it's been going on for 2700 pages.

and all to no avail.

link: ; ))))

 
Renat Akhtyamov #:


but basically, if it's up now, the next bar is down.


If it were like that, even if it was approximately like that, there would be no topic about MO :-)

and there are micro-trends and seasonals and reversals and they react to tick volume and all sorts of things. And they do not differ in principle from ordinary bars, black and white in statistics. Exactly the same, the replacement does not simplify the task at all

 
Maxim Kuznetsov #:

If it were so, even if it was even approximately so, there would be no topic about the MoD :-)

and there are micro-trends and seasonal trends and reversals and they react to tick volume and all sorts of other things. And they do not differ in principle from ordinary bars, black and white in statistics. Exactly the same, the replacement does not simplify the task at all

Yes, of course.

there are no fish there.

absolutely not.

;)

 
mytarmailS #:
There is no point in looking at the old model, it doesn't capture market changes.....

I disagree - a significant change in the leaf activation rate is indicative of missing conditions in the sample, and therefore a change in the sample.

mytarmailS #:
I suggest implementing as suggested)))))
In a sliding window retrain the model and look at the importance of the traits, or just take some determinator of good traits and look at it in a sliding window. window

I did this to identify predictors suitable for training on the whole population, I wrote here earlier about the positive results of the experiment. And so, they will always float within their group. You can make a script in R for calculations for my sample - I will run it for the sake of the experiment.

The experiment should reveal the optimal sample size.

 
Aleksey Vyazmikin #:

I disagree - a significant change in leaf activation rate indicates a lack of conditions in the sample, and therefore a change in the sample.

The model was trained for a specific plot. If there is no activation in leaves, it means that the current sample does not correspond to the one plot on which the model was trained....
If it is necessary to understand whether the current state has not changed, then it is necessary to retrain on the move
 
Aleksey Vyazmikin #:

You can make a script in R for calculations for my sample - I'll run it for the sake of experimentation.

What's the problem with substituting your own data into my script?
 
Maxim Dmitrievsky #:
If you start to examine quotes as a time series, you may notice some peculiarities that are not found in other time series. Perhaps there are patterns in these features. And yes, not everything can be pulled out by autoregression and classification directly using lag features, but with the addition of ingenuity you can

Personally, I abhor the original idea of quotes as a time series. If I formalise my idea of them mathematically, they are piecewise constant functions of time (continuous on the right). Moreover, the area of values can be of very different nature - e.g. numbers, vectors, state of the glass, etc. In addition to the prices themselves, there is other necessary information, which can be represented by the same functions (session state, news, etc.), and the area of values here can also be very diverse.

But meaningful computational work with continuous time functions is practically impossible, so some discretisation is always done. It can be done very differently and unanimity is hardly achievable in principle.

 
Aleksey Nikolayev #:

Personally, I dislike the original idea of quotes as a time series. If I formalise my idea of them mathematically, they are piecewise constant functions of time (continuous on the right). Moreover, the area of values can be of very different nature - e.g. numbers, vectors, state of the glass, etc. In addition to prices, there is other necessary information, which can be represented by the same functions (session state, news, etc.), and the area of values here can also be very diverse.


Why do we need a "representation"? What is the purpose of "representations"?

If the purpose is philosophical, there are no questions.

But in financial markets there are only two purposes: to predict value and to predict direction (sign).


If "representation" is for this purpose, then what influence, how related, what predictive power do all these "representations" have for the above purposes?

 
СанСаныч Фоменко #:

What is the purpose of "representations"? What is the purpose of "representations"?

If it is philosophical, there is no question.

But in financial markets there are only two purposes: to predict the value and to predict the direction (sign).


If "representation" is for this purpose, what influence, how related, what predictive power do all these "representations" have?

To give the participants of the discussion a better understanding of the ideas, the representations are very different for everyone here, even on the initial concepts. On representations depends the closeness of models of objects to the objects themselves.

Reason: