tag:blogger.com,1999:blog-7181380552290465298.post5299397946262666336..comments2024-03-14T18:02:56.265-04:00Comments on Robin's Bridge Blog: RatingsPhasmidhttp://www.blogger.com/profile/09870140728729031615noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7181380552290465298.post-18630076437615006942012-09-26T15:37:07.329-04:002012-09-26T15:37:07.329-04:00Hi Brad, as I mentioned, I was a supporter at firs...Hi Brad, as I mentioned, I was a supporter at first. But, unfortunately as with any statistical measure, there are those who will misinterpret its relevance/accuracy/whatever. Once people (who I knew from real life were not very good players) started labeling their tables with 52+ only, or somesuch annotation, I decided enough was enough. Yes, I'm familiar with your article(s). I certainly don't mean in any way to blame you for any of this. I know what you did and what you intended it for. And, as far as it went, your system was good, with the one exception noted in the blog.Phasmidhttps://www.blogger.com/profile/09870140728729031615noreply@blogger.comtag:blogger.com,1999:blog-7181380552290465298.post-62741822095081152602012-09-26T00:40:24.930-04:002012-09-26T00:40:24.930-04:00See also my introductory article about it, from 14...See also my introductory article about it, from 14 years ago, here: <br />http://www-personal.umich.edu/~bpl/oksimple.htmlBradley Lehmanhttps://www.blogger.com/profile/13182966813298691820noreply@blogger.comtag:blogger.com,1999:blog-7181380552290465298.post-85780774327128113032012-09-26T00:35:28.052-04:002012-09-26T00:35:28.052-04:00"Lehman ratings" weren't designed to..."Lehman ratings" weren't designed to deliver any specific meaning assigned to any number, as to being above or below 50. The only thing that's supposed to matter in interpreting them is to observe the delta: is your own rating going up, or down, from where it was the last time you looked at it? That only indicates if you've been playing above or below your own standard over the past series of recent boards. That's all it was designed to measure, calculated recursively on one's individual performance, and on an assumption that one would be playing with a variety of partners and opponents. <br /><br />I know that a lot of people have misunderstood that business about the delta, and have taken a high number to mean more simply that somebody's a good player, or a low number to mean that somebody would be an undesirable partner. Well, they're mistaken!<br /><br />It was a temporary feature that happened to become surprisingly popular. It saddens me that you're claiming it drove you away.<br /><br />Brad LehmanBradley Lehmanhttps://www.blogger.com/profile/13182966813298691820noreply@blogger.com