sprath Posted December 12, 2007 Share Posted December 12, 2007 Hello all, I'm not sure if this is in the right forum or not. I'm new to greyhound racing systems, so I've got what might be an elementary question. How many races do you look at when you are backtesting systems? So far, I've been using a couple of months worth of data to test systems with. Is that too much, too little? Anyone care to share their opinion? Thanks, Steve Quote Link to comment Share on other sites More sharing options...
Striker Posted December 12, 2007 Share Posted December 12, 2007 Re: backtesting systems for greyhounds... How many races to test? My advice Steve is you need at least 12 months data to test any greyhound system Quote Link to comment Share on other sites More sharing options...
davyboy Posted December 13, 2007 Share Posted December 13, 2007 Re: backtesting systems for greyhounds... How many races to test? hi, i had a greyhound system that was successful for over 9 months & over 400 races which was proving successful, but then it all started to go wrong & never really picked up again!, i believe that systems run in circles you just never know how big the circle is!!, so with that in mind it would be best to make hay while the sun shines!!! Quote Link to comment Share on other sites More sharing options...
oriental_express Posted December 13, 2007 Share Posted December 13, 2007 Re: backtesting systems for greyhounds... How many races to test? hi' date=' i had a greyhound system that was successful for over 9 months & over 400 races which was proving successful, but then it all started to go wrong & never really picked up again!, i believe that systems run in circles you just never know how big the circle is!!, so with that in mind it would be best to make hay while the sun shines!!![/quote'] have you heard of the bank barrier technique ? Quote Link to comment Share on other sites More sharing options...
davyboy Posted December 13, 2007 Share Posted December 13, 2007 Re: backtesting systems for greyhounds... How many races to test? what is the bank barrier technique? Quote Link to comment Share on other sites More sharing options...
sprath Posted December 13, 2007 Author Share Posted December 13, 2007 Re: backtesting systems for greyhounds... How many races to test? Thanks for the answers. I read a book that suggested much what davyboy ran into, that one system won't work forever even at the same track in the same grade and distance. It suggested that you should reevaluate the system consistently and adjust it as needed. Right now, I'm looking at doing both long term (12 months) and short term (1-2 months) backtesting. I am interested in hearing about the bank barrier technique. I would appreciate more info or a link. Quote Link to comment Share on other sites More sharing options...
oriental_express Posted December 14, 2007 Share Posted December 14, 2007 Re: backtesting systems for greyhounds... How many races to test? the bank barrier © techniques is used to protect your betting bank of course. A normal punter with a betting bank would bet 3% of his bank until it finishes right ? well with the bank barrier techniques (deciding on how much risk you want) the technique can cut of your gambling when you decide. eg lets say i have a starting bank of £100 and the amout of risk i want to expose to it is 50%. This means my bank barrier is £50. So you gamble as normal. If the bank balance is above £50 you gamble as normal but if it goes below £50 then it comes the bank barrier comes into play. so say today your bank was £51 and you had a bet for £2 and the bet lost, you now have £49. Now you paper trade any bets you have and calculate it to the £49 bank (but not really - or + cause you paper trading.) so you just keep paper trading until you the balance goes above £50. eg if your balance today is £49 (still paper trading ) and you have a selection today at £2 stake odds 3 and it wins. you win £4 in profit papertrade. Add that to the £49 which gives £53. So really this technique has cost you £3 insurance, something you could have won today. It cost you insurance to have the bank barrier come into play aswell. So any losing runs wont really cost you cause your protected. I had a starting back of £156 my bank barrier is (60%)£93.6 my real bank balance now is £84.48 due to fluctuations between real bank and papertrading. My paper trading balance is now £68.15 . when this balance reaches £93.6 then i will start using my real balance of £84.48 again. Hope everyone understands. Quote Link to comment Share on other sites More sharing options...
sprath Posted December 14, 2007 Author Share Posted December 14, 2007 Re: backtesting systems for greyhounds... How many races to test? Good explanation. I had planned to incorporate a loss limit of 50%. At that point, re-evaluating and paper trading until you get back up to your loss limit makes sense. Quote Link to comment Share on other sites More sharing options...
mwilding1981 Posted December 14, 2007 Share Posted December 14, 2007 Re: backtesting systems for greyhounds... How many races to test? Hi, would you be kind enough to tell me where you are getting your greyhound data from? Thanks Quote Link to comment Share on other sites More sharing options...
richblue67 Posted December 16, 2007 Share Posted December 16, 2007 Re: backtesting systems for greyhounds... How many races to test? Try www.thedogs.co.uk Quote Link to comment Share on other sites More sharing options...
sprath Posted December 17, 2007 Author Share Posted December 17, 2007 Re: backtesting systems for greyhounds... How many races to test? For US racing info, I'm using QuickDog software. It allows you to pull data from a lot of tracks in the US. The interface is a little quirky, but the data seems to be accurate. Quote Link to comment Share on other sites More sharing options...
mwilding1981 Posted December 19, 2007 Share Posted December 19, 2007 Re: backtesting systems for greyhounds... How many races to test? Thanks everyone. I am currently discussing with nthe Racing Post whether I can get data off them as well. If anybody has any and would like to share or knows of anywhere else that has any please let me know :cheers Quote Link to comment Share on other sites More sharing options...
Semikings Posted January 4, 2008 Share Posted January 4, 2008 Re: backtesting systems for greyhounds... How many races to test? Try this:- http://www.greyhound-data.com/index.htm Quote Link to comment Share on other sites More sharing options...
Ferru Posted January 13, 2008 Share Posted January 13, 2008 Re: backtesting systems for greyhounds... How many races to test? It's a pity there isn't an equivalent for greyhounds of the searchable Adrian Massey horse racing database. It would be useful to know, for example, how much profit or loss would be made from backing the dog with the fastest sectional time in all races over the past 5 years, or what the effect on profit is of backing dogs who have just moved up a grade. Jeff Try this:- http://www.greyhound-data.com/index.htm Quote Link to comment Share on other sites More sharing options...
.thumb.JPG.8c5a15b710f7a4188ce438df64354c1e.JPG)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.