Search found 83 matches

by Howard Grist
Tue Jan 20, 2009 2:59 am
Forum: Online Grading Database
Topic: Historical Grades
Replies: 11
Views: 5745

Re: Historical Grades

Paul, The Master Points is not my department so I'm not going to comment on it. Grading lists do not include a list of top players until 1990 whereupon the top 50 were published - which was everybody above 220 (or thereabouts). What you've done sounds good - I can't think of anything I would like yo...
by Howard Grist
Sat Jan 17, 2009 3:03 am
Forum: Online Grading Database
Topic: Historical Grades
Replies: 11
Views: 5745

Re: Historical Grades

Paul, I kicked this idea round the grading team, and two points were raised:- 1) The ECF needs to clarify what entitlement, if any, inclusion on such lists would enable players to be entitled to titles under the Master Points system. 2) The BCF stopped publishing 'top players only lists in 1986. Wha...
by Howard Grist
Wed Jan 14, 2009 1:48 pm
Forum: Online Grading Database
Topic: Historical Grades
Replies: 11
Views: 5745

Re: Historical Grades

Paul, Are you seriously planning to enter forty years' worth of BCF grading lists? Wow. If this is what you are intending then I don't see how I could decline to amalgamate it with the information currently in the database. Rather than discuss nitty-gritty details here, I suggest that if you want to...
by Howard Grist
Tue Nov 04, 2008 11:44 am
Forum: Grading Debate
Topic: Grading Calculation - New Players with 0% or 100% Scores
Replies: 4
Views: 2138

Re: Grading Calculation - New Players with 0% or 100% Scores

The first step of the grading process is to calculate an 'initial grade' for new players. This is done in two stages. The first is an iteration using 40 points for a win and ignoring the 40 point rule. The second stage is to use the result of the first stage as the new player's grade and grade his r...
by Howard Grist
Wed Oct 22, 2008 11:16 pm
Forum: Grading Debate
Topic: GRADING ANOMALIES
Replies: 565
Views: 73601

Re: GRADING ANOMALIES

1. When the new grades come into effect in a year's time, will the historical calculation of new grades (which goes back 3 or 4 years, I think) also be published, to replace the old grades (e.g. in the online grading database on the ECF website). There are no plans to do this. Only official grades ...
by Howard Grist
Mon Sep 01, 2008 2:34 pm
Forum: Online Grading Database
Topic: New Grades
Replies: 38
Views: 11448

Re: New Grades

Roger, Carsten's stats illustrate what I was referring to with my comment. An alternative one is that if you take the arithmetic mean of all players' individual percentages over the course of a season it comes to just under 40% - not the 50% that the grading system is expecting. With more active pla...
by Howard Grist
Mon Sep 01, 2008 1:02 pm
Forum: Online Grading Database
Topic: New Grades
Replies: 38
Views: 11448

Re: New Grades

juniors are all significantly under graded, and my investigations actually bore this out. Is this actually true and scientifically accurate? Under the current system Juniors were, on the whole, out-performing their grades. The New grades correct this, which is why juniors have increased more than a...
by Howard Grist
Sun Aug 31, 2008 8:42 pm
Forum: Online Grading Database
Topic: New Grades
Replies: 38
Views: 11448

Re: New Grades

John, The 11 people with the largest differences between their New and old standard play grades are:- 253399G Chan, Isla 259038E Powney, Elliot 252776F Tso, Benedict 253552L Eyles, Alan 268794L Marsh, Matthew 256553F Linsley-Parrish, James C 271011A Rajaratnam, Thushaan 243382F Thrumble, Milo 252115...
by Howard Grist
Fri Jun 13, 2008 11:49 am
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

The statistical evidence shows that there has been deflation for all sections of the ECF grading system below current 215 - and that the lower the grade the larger the deflation has been. Therefore the only way to "correct" the system is to leave the grades that are ok (215+) alone, and correct the...
by Howard Grist
Thu Jun 12, 2008 11:30 pm
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

As they are doing a complete reboot of the system, the level at which they pitch the new grades is arbitrary and therefore IMHO should have been put to the ECF board and council for approval. There may even be October council motions to this effect.. This is complete nonsense. The level for the new...
by Howard Grist
Thu Jun 05, 2008 7:39 pm
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

Some ECF grading system history:- 1987: National grading sytem introduced. This works on the basis of graders calculating points and games totals for each player in an event. 1999: New system introduced, working on the basis of reporting results, with these being converted to points and games centra...
by Howard Grist
Thu Jun 05, 2008 2:37 am
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

Is it then true that (forgetting the forty point rule) if I play an ECF graded player then the difference between a win and a loss is 100 points. If I play a non-ECF graded player in an ECF graded event then the difference between a win and a loss is 100 - 100/n where n is the number of games that ...
by Howard Grist
Thu Jun 05, 2008 12:51 am
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

If you play Megan Owens, then her ECF grade of 114 would be used for ECF grading purposes. The 1820 figure is a number calculated by the 4NCL for the purpose of board order, and does not come in to the ECF grading calculation at all. If you play a Welsh player with a 2000 rating (Welsh or FIDE) in t...
by Howard Grist
Thu Jun 05, 2008 12:36 am
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

That's pretty much the size of it. You would send the results to the ECF International Rating Officer (another one of my hats) who would translate your performance into 5 games and 875 points if your opponents are lacking in other ratings or 750 points if your opponents have FIDE ratings of 2000. Th...
by Howard Grist
Thu Jun 05, 2008 12:15 am
Forum: Grading Debate
Topic: New grades (split from Editorial thread)
Replies: 118
Views: 11603

Re: New grades (split from Editorial thread)

Matthew - this is one of the myths of the grading system. The FIDE conversion formula is not used to calculate grades. It is simply a way for tournament organisers to compare ratings. Sean, it's not a myth. The FIDE conversion formula is used when ECF Members play in foreign tournaments and want to...