Estimated strength of tourney

[schlaks]

I played a tourney and noticed for the first time this info:

 

Title #29238 Pairs * SLEEPLESS / UYKUSUZLAR *

Strength 1288 MP, estimated from 5 ACBL players (0% of field)

...

 

Strength 1288 MP? what does it mean?

[pilowsky]

It means nothing.

[DJNeill]

I played a tourney and noticed for the first time this info:

 

Title #29238 Pairs * SLEEPLESS / UYKUSUZLAR *

Strength 1288 MP, estimated from 5 ACBL players (0% of field)

...

 

Strength 1288 MP? what does it mean?

 

Looks like a feature of BBO Helper extension, or what they advertise as a feature.

[schlaks]

Looks like a feature of BBO Helper extension, or what they advertise as a feature.

 

that's right, thx

[dsLawsd]

Not much help with out some points of reference. Certainly not for seeding either it would seem. But someday that information might have value.

[JmBrPotter]

The ACBLmerge program estimates a "field strength" as the geometric mean of the ACBL MP holdings of the competitors. If you believe that, in some meaningful way, players with more ACBL MPs are "stronger" than players with fewer ACBL MPs; then this measures field strength in some sense. The larger the geometric mean, the more likely you will stumble across an opponent with more ACBL MPs than that mean. When the number of ACBL members in the field constitute a very small fraction, "nothing" is probably a fair estimate of what it means.

[schlaks]

The ACBLmerge program estimates a "field strength" as the geometric mean of the ACBL MP holdings of the competitors. If you believe that, in some meaningful way, players with more ACBL MPs are "stronger" than players with fewer ACBL MPs; then this measures field strength in some sense. The larger the geometric mean, the more likely you will stumble across an opponent with more ACBL MPs than that mean. When the number of ACBL members in the field constitute a very small fraction, "nothing" is probably a fair estimate of what it means.

Using data from BBO Masterpoints - if possible - would seem much more useful

[barmar]

Using data from BBO Masterpoints - if possible - would seem much more useful

Since BBO points are not in any public database, it would be difficult for them to do this.

 

That said, I'm not sure how they're linking BBO usernames to ACBL members. We have that information in our database, I don't know how a third-party application is doing it.

[schlaks]

I think it would be useful to know, at the end of the tournament, the average strength of the field (in BBO Masterpoints) so that everyone can better evaluate, if interested, his performance.

BBO may implement this feature, don't you think?

[pilowsky]

A simple way to discover the masterpoint history of a group of players (Only applies to points earned on BBO) is to look up the username in the database (https://www.bridgebase.com/points/index.php)

Since this can be a bit tedious you can also collect the results for a group of people simultaneously by using a google sheets spreadsheet and for each player you are interested in put this formula into a cell:

=IMPORTHTML("https://www.bridgebase.com/points/index.php?u=username","table",2)

Change username to the username - obviously.

Substituting '2' for '1' returns the persons username, and points needed to reach the next rank increment.

[schlaks]

A simple way to discover the masterpoint history of a group of players [cut]

Thanks, but I'm talking about knowing - after the tournament - the strength of the players, in order to evaluate my results more precisely. BBO could do it very simply, I think.