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Re: Offensive Power Rankings for 2008
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Here is every single regional. The ordering isn't sorted. The files are just txt files with funny names, just rename the .out extension.
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Re: Offensive Power Rankings for 2008
From the "throw a monkey wrench and see what happens dept.":
Has anyone looked to see how much effect surrogate matches have on these rankings? If the number of matches per team determines the matrix size, is the calculation looking to see how many matches a given team actually played? For example, in Philly all teams played 11 matches, but 304 and 381 each played 12: 11 plus one extra surrogate match. For those not familiar, surrogates are called for to "fill out" the schedule when the number of teams x the number of matches / 6 is not a whole number. Without surrogates there would be some matches with un-filled robot positions. Surrogate match results are not counted in FIRST's ranking scores, and are identified by a "1" next to the team # in the qualifying schedule. This year it is always the third match for a surrogate team. |
Re: Offensive Power Rankings for 2008
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Re: Offensive Power Rankings for 2008
To build on what others have said about the shortcommings of the OPR, watching the actual matches is a ton better than just looking at the OPR. The OPR attempts to predict how well a team scores per match, and is just decent at it. Relying on only the OPR is like a weatherman predicting the weather simply looking at on the month's average weather, instead of actually looking at the weather patterns, air pressure and all the other stuff weather people look at when making the forcast. By looking at the averages I'll know tommorrow it will be fairly warm, but won't tell me if I should bring a jacket, umbrella or sunglasses. OPR is nice because it gives a rough or general idea about a team very quickly and easily, but to get a good idea about a team, you need to actually watch thier matches.
I would use it only in prescouting where there is no matchs online of the team. In this situation it is better than no information at all. EDIT: One of the shortcommings is that the OPR attempts to predict something that can be found--the team's contribution to thier alliance--by watching the team's matches. It is nice that is very easy to find, but its not like it is predicting something that we cannot find. |
Re: Offensive Power Rankings for 2008
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For SD, the R value was .8852 and R-squared of .7836 For LA, the R value was .8490 and R-squared of .7200 When I removed penalties from the equation, the SD R value fell to .8620 and the LA R value fell to .8345 |
Re: Offensive Power Rankings for 2008
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Full DB dump of the interesting bits. Enjoy! |
Re: Offensive Power Rankings for 2008
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Re: Offensive Power Rankings for 2008
A little off topic, but how did our team drop points, when we havn't played a regional? From 37.472 to 32.54432471???:ahh: :confused: Our last regional was GLR ??????
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Re: Offensive Power Rankings for 2008
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Re: Offensive Power Rankings for 2008
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Re: Offensive Power Rankings for 2008
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Someone (don't know if he wants to be revealed) via PM requested the algorithm I've been using, which meant I had to clean my code, which means I'm not as embarrassed to post it.
So here it is: Code:
// opr.cpp : Defines the entry point for the console application.-Reglist.txt - a list of regional data to be processed. One file per line. Note that it will output a file for each file in this list, and that will be the OPR for that regional -cmpteams.txt - A list of teams that you're interested in (for example, a list of teams going to championships). One team per line. -the JAMA math library (see attached file). This is from the NIST, it should be ok to redistribute. You can get the actual file here: http://math.nist.gov/tnt/download.html ------------ Licensing: None, do whatever you want with it. Feel free to give me credit or something though (but you don't have to, if it'd cramp your style). |
Re: Offensive Power Rankings for 2008
http://www.thebluealliance.net/cdvid...08_matches.csv
Match dump including New York City regional. Includes column with event name and event week. Provides column with competition level (to filter out elims, if you want) and match number (probably not useful). Filters out matches with incomplete information. |
Re: Offensive Power Rankings for 2008
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With Greg's new dump, I'm proud to present: my complete OPR rankings. These include every match in the TBA system, including eliminations, broken down as follows: one sheet overall, one sheet for each week, two combined sheets (combining the weekly and overall rankings): one normal, and one with repeats in the top 50 or so color labeled.
Note: the following includes teams' overall performances as well as their weekly ones. If you wish to disregard the overall ones, subtract one from all numbers :P 1114 have the top 3 and 4 out of the top 10 performances overall. 233 have 2 out of the top 10, as do 2056. 330, 987, and 2056 also all have 3 in the top 20, with 39 having 2. Other notable repeats include 217 (3 performances in the 21-42 range), 67 (same), 525 (same), 1124 (2 in 21-41), 40 (same), 1625 (2 in top 50), 103 (same, including the 13th best). Here are the top 50 performances, be them weekly or overall: Code:
1114 78.07555206 5Enjoy :) |
Re: Offensive Power Rankings for 2008
Great data... you can definitely see an improvement among teams over the weeks.
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Re: Offensive Power Rankings for 2008
Here's a theoretical and completely meaningless divisional breakdown for Championships based solely on Bongle's final OPR's and the current 339-team list (sort all teams by OPR, then go (A, C, G, N), (A, C, G, N), etc.
Even if FIRST went with this off the wall sorting system, the addition of the final few teams would skew the arrangement. Code:
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