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Castle Paradox
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Shadowiii It's been real.

Joined: 14 Feb 2003 Posts: 2460
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Posted: Mon Jan 26, 2004 10:13 am Post subject: Grading Down |
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Question: Why does the default grading in the Average Grade thing grade down instead of up? For example. I Made Dis Anthology had a B rating. I gave it a B-, and now its average is a B-. Also, take Curse of Dracula. With a D+ and a B-, its average is between C and C+, but the average is just C.
I'd honestly like to see it graded UP (based on personal preference...I could try to explain but it would suck) instead of DOWN, in all honesty. Does this annoy anyone else? Voice your opinions here! _________________ But enough talk, have at you! |
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Fenrir-Lunaris WUT

Joined: 03 Feb 2003 Posts: 1747
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Posted: Mon Jan 26, 2004 10:59 am Post subject: |
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It's like the OHR's rounding calculations, eh? How about... odd number of reviews, it rounds up, even number it rounds down? |
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TMC On the Verge of Insanity
Joined: 05 Apr 2003 Posts: 3240 Location: Matakana
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Posted: Mon Jan 26, 2004 11:56 am Post subject: |
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I noticed this a while ago. I think its fine rounding down, but just like you, I can't explain why either.
FL, I'm wondering whether that even makes sense?
(BTW, if a game recieved 1 B and 4 B+'s, does anyone know whether the average would be B or B+?) _________________ "It is so great it is insanely great." |
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Fenrir-Lunaris WUT

Joined: 03 Feb 2003 Posts: 1747
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Posted: Mon Jan 26, 2004 1:06 pm Post subject: |
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Well I'm not sure about the calculations, but.. Assuming a score of F- has a value of 0, F = 1, F+ = 2,.... ...A = 13, A+ = 14, then the average score has a relative value of 7 (being a C). An alternate way of determining an average grade for a given game would be to add up the values for each grade given to it, then divide by the number of reviews.
For Example, Arfenhouse 3 has a CP calculated average score of A-. It's actual review scores are A+, A, A, A-, B+, B+. By the point totals, that's 14,13,13,12,11,11, which amounts to a total score of 74. 74 divided by 6 (6 reviews) equals 12.333, which when converted back into the CP auto score is 12, and this gives us the average score of A-.
If Arfenhouse had 3 more reviews of A (value 13) for a total of 8 reviews, then it's grand score would be 100, and the revised score of 12.5 would fall flat in between an A- and an A.
A game that received one B and four B+'s would have a total value of 54, and a revised score of 10.8, which rounded up should give the game a score of B+. If that game still had a B, then you know for sure that CP's grading code rounds down to whole numbers.
Coincidentally, FFH's grade seems to agree with this theory of rounding down. A+, D, C+, which have values of 14, 4, 8, a combined total of 26, and a revised total of 8.667, which if rounded up give a grade of B-, but instead we find that it has a C+ (so you can infer that CP's code only allows for whole numbers). This also means that FFH, or any other game that has held the glorified A+ spot will NEVER see that spot again, regardless of however many A+'s it receives. |
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Fenrir-Lunaris WUT

Joined: 03 Feb 2003 Posts: 1747
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Posted: Mon Jan 26, 2004 1:36 pm Post subject: |
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While we're at it, let's do gamefaqs/7 is Average style grading calculations just to show you how wrong it can get, and why a 7 is average grading system is a BAD idea.
First, lets's set up our table.
Code: | A+....10
A.....10
A-.....9
B+.....9
B......8
B-.....8
C+.....7
C......7
C-.....6
D+.....5
D......4
D-.....3
F+.....2
F......1
F-.....0 |
FFH, because of its scores, has a grade of 21 under this system. This is noticably less than the 26 points it would have had if 5 was average. It's revised total suddenly becomes 7, which at best is a C+ and at worst a C. The 5 is average score is still more accurate a metod to grade than 7 is.
Arfenhouse 3, combined scores add up to 57, which is significantly less than what it had at 74 by the other method. It's revised score is 9.5, which rounded up or down to the nearest whole number will get it an average score between an A+ and a B+. That certainly isn't very accurate.
If the majority of the community's games were so terribly BAD, then this would probably be the grading system CP would have adopted.
There's a final way to score games, which would be something akin to an exponential grading system, with each increment being TWICE that of the previous value. I'll get into that one later. |
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Shadowiii It's been real.

Joined: 14 Feb 2003 Posts: 2460
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Posted: Mon Jan 26, 2004 3:09 pm Post subject: |
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The only downside with that is there is a HUGE jump for reviewers between F and F- and A and A+ when the reviewer decides to review a game. A's and F's are not difficult to get, it is the F-'s and A+'s that are hard to pull off. Of course, if we altered the system to fit everyone's personal reviewing positions, it wouldn't work at all. _________________ But enough talk, have at you! |
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Inferior Minion Metric Ruler

Joined: 03 Jan 2003 Posts: 741 Location: Santa Barbara, CA
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Posted: Mon Jan 26, 2004 6:00 pm Post subject: |
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Fenrir-Lunaris wrote: | Well I'm not sure about the calculations, but.. Assuming a score of F- has a value of 0, F = 1, F+ = 2,.... ...A = 13, A+ = 14, then the average score has a relative value of 7 (being a C). An alternate way of determining an average grade for a given game would be to add up the values for each grade given to it, then divide by the number of reviews.
For Example, Arfenhouse 3 has a CP calculated average score of A-. It's actual review scores are A+, A, A, A-, B+, B+. By the point totals, that's 14,13,13,12,11,11, which amounts to a total score of 74. 74 divided by 6 (6 reviews) equals 12.333, which when converted back into the CP auto score is 12, and this gives us the average score of A-.
If Arfenhouse had 3 more reviews of A (value 13) for a total of 8 reviews, then it's grand score would be 100, and the revised score of 12.5 would fall flat in between an A- and an A.
A game that received one B and four B+'s would have a total value of 54, and a revised score of 10.8, which rounded up should give the game a score of B+. If that game still had a B, then you know for sure that CP's grading code rounds down to whole numbers.
Coincidentally, FFH's grade seems to agree with this theory of rounding down. A+, D, C+, which have values of 14, 4, 8, a combined total of 26, and a revised total of 8.667, which if rounded up give a grade of B-, but instead we find that it has a C+ (so you can infer that CP's code only allows for whole numbers). This also means that FFH, or any other game that has held the glorified A+ spot will NEVER see that spot again, regardless of however many A+'s it receives. |
Fen has it right. The scoring does go from 0 to 14 (F- to A+) and the reason the system rounds down is your average integer calculation truncates, meaning it simply drops the decimal. 1.9999999 still equals 1. _________________
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Uncommon His legend will never die

Joined: 10 Mar 2003 Posts: 2503
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Posted: Tue Jan 27, 2004 10:06 am Post subject: |
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Huh.
Well, the way I was always taught was that rounding should depend on the decimal. Like, say it's 7.5 or above, right? Well, that would be rounded up to 8, but 7.4 and below would be rounded down to seven. Could it do something like that? |
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Inferior Minion Metric Ruler

Joined: 03 Jan 2003 Posts: 741 Location: Santa Barbara, CA
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Posted: Tue Jan 27, 2004 6:18 pm Post subject: |
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Uncy....I meant average integer calculation in a program. When you work with integers when programming, it automatically truncates. The review grades are integers, and as such, when PHP does a calculation, it automatically drops off the trailing decimals and sticks it back into the MySQL database. _________________
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*Worthy* Critical Thinker

Joined: 11 Aug 2003 Posts: 186
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Posted: Thu Jan 29, 2004 4:36 pm Post subject: |
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Personally, I don't see a problem with the way the grading system is now. It would be nice if it would round .5's and up to the next number, but there are advantages to it rounding down. It makes earning a great grade more challenging to achieve. So, it's not quite as easy to get an A or A- or other top grades.
The only thing that I disagree on is, as Fenrir stated above, if a game receives 4 A+'s and one A, no matter how many extra A+'s the game gets, it will never equal out to an A+. On the other hand, I guess it makes the value of an "A+" that much more challenging to get.
~Worthy _________________ You can do whatever you want...but prison is full of people who make bad decisions. |
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