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Rating Inflation

Rating Inflation

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Thug

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Originally posted by seraphimvulture
Chessmaster 9000 can beat CM 8000 and 7000.
I've been using Assmaster5000 and Ravello's RetardoChess6000(beta version). My rating seems to be in a downward spiral ever since.

x

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Originally posted by fexkorn
I think the ratings have gone up about 80-100 points for the same level of play over the last two years.
i would have thought 500 but ive been away. time spent playing chess with practice may make the difference as players learn by their mistakes.

G
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It's like pouring sand onto a heap - it maintains the same shape but the edges keep expanding.

x

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well said.😵

f
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I have some data, yes it's less than 5 months worth, but it supports this. About once per week I've recorded the rating that correspond to 50th, 80th, 90th and 95th percentile on the "Player Tables". You can see that over the time period the size of this list (non-provisional players active in past 100 days) has grown steadily from 6154 to 7925 (28 percent growth). The rating corresponding to ...[text shortened]... 2005 7672 1290 1472 1584 1698
7/29/2005 7845 1289 1474 1586 1700
8/9/2005 7925 1290 1473 1588 1698
that's a strong argument supporting the "no inflation theory". well done. But it's limited by only going back 5 months. Two years ago it was difficult for me to stay over 1400. Now I'm over 1600. I think I've improved a bit, but not that much.

X
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Originally posted by fexkorn
that's a strong argument supporting the "no inflation theory". well done. But it's limited by only going back 5 months. Two years ago it was difficult for me to stay over 1400. Now I'm over 1600. I think I've improved a bit, but not that much.
I'll say it again. Spread has increased, average rating has not.

f
Dad

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Here's my point XanthosNZ...according to RookRAK's chart, the 80th percentile is always around 1475 and the 90th percentile is always around 1590. I don't think my skill level has gone from BELOW the 80th to ABOVE the 90th percentile in the last 2 years. If I'm wrong then good for me!

X
Cancerous Bus Crash

p^2.sin(phi)

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Originally posted by fexkorn
Here's my point XanthosNZ...according to RookRAK's chart, the 80th percentile is always around 1475 and the 90th percentile is always around 1590. I don't think my skill level has gone from BELOW the 80th to ABOVE the 90th percentile in the last 2 years. If I'm wrong then good for me!
Who says the average ability on the site has remained constant?

f
Dad

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Originally posted by XanthosNZ
Who says the average ability on the site has remained constant?
That's the whole point. If the average ability on the site has gone down then the ratings of the people who have been here are..."inflated"

PX

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My rating has remained the same (1562) for about a month now, and in that time my place on the High Ratings table has dropped from 894th to 930th, or roughly 10 places per week. Obviously most of the people whose ratings rise rapidly are strong players who are still reaching their equilibrium.
I wonder how many active players there are now?

DS
I'm A Mighty Pirate™

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Originally posted by seraphimvulture
Chessmaster 9000 can beat CM 8000 and 7000.
The Machines had that very same theory when they sent back the Terminators... 😉

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