Serving the Quantitative Finance Community

 
User avatar
raffapi
Topic Author
Posts: 0
Joined: April 10th, 2003, 6:22 pm

Bootstrap Method

September 2nd, 2003, 5:14 am

I'm looking for an interesting topic about Bootstrap Method. Have you some suggestions?
 
User avatar
SPAAGG
Posts: 3
Joined: March 21st, 2003, 1:31 pm

Bootstrap Method

September 2nd, 2003, 5:41 am

Performance measurement of some strategies. We used it with a friend. We developped a strategy where we took positions rarely (over 15 years, only 200 days). So, it is nearly impossible to compare the performance using usual tools (sharpe ratio with S&P500 benchmark for example). We used bootstrap in order to quantify the performance. The idea is to simulate entrance points for other strategies and to compare the performance. "What would have been my returns if I had taken other entrance points for my positions (you keep the lenght and the order of your positions, but you change the moment you enter in)). You run 20'000 simulations, compute the cumulative return, draw an histplot, place your strategy on the histplot. If it appears in an upper quantile, you can say that you overperform the others. You have really chosen the optimal entrance points.I hope it helps,
 
User avatar
SPAAGG
Posts: 3
Joined: March 21st, 2003, 1:31 pm

Bootstrap Method

September 2nd, 2003, 10:53 am

You can also try to generate more observations from a small sample. Imagine quarterly data. You don't have a lot of independent observations. So you can use bootstrap to generate more. Of course, it rely on certain assumptions....But it might be quite interesting...
 
User avatar
FDAXHunter
Posts: 14
Joined: November 5th, 2002, 4:08 pm

Bootstrap Method

September 2nd, 2003, 10:57 am

Hehehe... you could try to figure out the exact value of kurtosis in finanical markets... hehehehe.... of course, that underlies certain assumptions.... *gnihihihi* <-- Evil
 
User avatar
xanadu
Posts: 0
Joined: November 6th, 2002, 5:54 pm

Bootstrap Method

September 2nd, 2003, 11:28 am

In my limited reading, I gathered bootstrapping, as a term, to be more generalizable. I have seen other dimensions/randomizations used while still being labeled as bootstrapping. For example, Alfred Cowles evaluated investment newsletters by comparing their picks to random stock sets. He did so in 1934, which obviously predates the well know dart contests in the WSJ. The whole point of the exercise seems to be to control for multiple factors in one fail swoop. Without controlling for these factors, one might be lulled into assuming good absolute performance is sufficient to accept or reject a trading strategy.Check out Brock, Lakonishok and LeBaron
 
User avatar
tomo
Posts: 0
Joined: October 9th, 2002, 9:56 am

Bootstrap Method

September 3rd, 2003, 7:56 am

For another application see discussions on filtered historical simulation as used by Barone-Adesi et al. I think there is literature on the glorimundi website. I can did out the references to published papers if you are interested.T