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Bridge Winners Profile for Piotr Lopusiewicz

Piotr Lopusiewicz
Piotr Lopusiewicz
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Basic Information

Member Since
March 6, 2011
Last Seen
Sept. 19
Member Type
bridge player

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Statistical Analysis of "Declarer's Advantage"?
I was measuring things in IMPs (in comparison to double dummy) instead of tricks as all imported vugraph hands were played for IMPs and that seemed more relevant to me. Standard deviation was 3.5imps per hands so that would be 78imps per 500 hands. You've got 100 tricks ...
Statistical Analysis of "Declarer's Advantage"?
It's likely sample size issues. I mentioned above the comparison done on much bigger sample (all vugraph hands of chosen top players) and Richard Pavlicek done similar work before me as well: http://www.rpbridge.net/8j45.htm
Statistical Analysis of "Declarer's Advantage"?
It's the defenders who have +0.5imp per hand not the declarer. There is a lot of uncertainty in declarer play as you don't know much about defenders shape and key card location while they do know a lot more about declarer's hand and they can convey ...
Statistical Analysis of "Declarer's Advantage"?
I've run it in the past sadly don't have the scripts and files anymore so you will have to trust me on it. There is no declarer's advantage in bridge at decent level. The results are very similar to double dummy play with the exception of 1NT ...
The Videos Shout: Balicki-Zmudzinski
They are not forcing but xxxx xx xx KQTxx is too weak a hand for that. Normal range is good 7 up to 11pc.
The Videos Shout: Balicki-Zmudzinski
I don't really know why they have 12-15 on the cc for 1C etc. It's incorrect. I made the analysis for the Polish forum before but I can repeat it here if there is need. The analysis is based on what actually happened at the table (on vugraph ...
The Videos Shout: Balicki-Zmudzinski
>>If the PBU keeps the title, they speak for all of Poland. If the Polish players don't replace the PBU with people that will do the right thing, then all of Polish players will have supported the actions of the PBU. Oh, so then every American is responsible for ...
The Videos Shout: Balicki-Zmudzinski
Very small nitpick but it's important to get ranges right (and in this case even more incriminating in some cases). 1C = 12-14BAL, 15+nat or 18+any (not 12-15 and not 19+) This is important because there was a discussion about 1C - 1S - 2C - 3C hand which is different ...
The Videos Speak: Balicki - Zmudzinski
>>Suppose I divide my data into two parts (“training set” and “test set”). I use the “training set” to form a hypothetical pattern which I will search for in the test set. Since I didn't examine the test set yet, from the point of view of the null hypothesis ...
The Videos Speak: Balicki - Zmudzinski
>>Piotr, you appear to have strong opinions on this subject. Yes because I am tilted by misapplying methods designed for a case where experiment can be repeated to the problem at hand. >> Sadly, what you are posting is nonsense. I've posted several arguments as to why proposed method leads ...
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