Chief Delphi - 2011 Archimedes Division

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- - 2011 Archimedes Division (http://www.chiefdelphi.com/forums/showthread.php?t=94592)

Re: 2011 Archimedes Division

Quote:

Originally Posted by rtfgnow (Post 1053309)

Really?

Yep.

Code:

wc         Wayne County            Ann Arbor MI District      

dt         Detroit                 Detroit MI District

gg         Greater Genesee         Kettering University MI District

ww         Western Wayne           Livonia MI District

swm         Southwest Michigan      Niles MI District

gt         Greater Traverse        Traverse City MI District

oc         Oakland County          Troy MI District

oc1         Oakland County          Waterford MI District

mi         West Michigan           West Michigan MI District

District map can be found here

Re: 2011 Archimedes Division

Looks awesome, this is going to be 2022's first time at championship ever, and we excited to have the dome floor Thursday/Saturday.

Re: 2011 Archimedes Division

Looks like an awesome field. And we even get the saturday dome field an added bonus!

Re: 2011 Archimedes Division

If the OPR rankings are from the highest of attended regionals then ours should be from OKC where are OPR should be much higher. Am I understanding that correctly?

Re: 2011 Archimedes Division

Quote:

Originally Posted by bladetech932 (Post 1053327)

If the OPR rankings are from the highest of attended regionals then ours should be from OKC where are OPR should be much higher. Am I understanding that correctly?

Your OPR from Oklahoma City is 26.93 which is lower than the one listed from Kansas City.

Re: 2011 Archimedes Division

OK, then could some one explain what factors in to OPR

Re: 2011 Archimedes Division

I don't know everything, but it is based on alliance scores and not individual robot performance.

I don't know the algorithm, but it is calculated from the FMS feeds

Again, these are just arbitrary numbers...

Re: 2011 Archimedes Division

Quote:

Originally Posted by Vikesrock (Post 1053315)

Yep.

Code:

wc         Wayne County            Ann Arbor MI District      

dt         Detroit                 Detroit MI District

gg         Greater Genesee         Kettering University MI District

ww         Western Wayne           Livonia MI District

swm         Southwest Michigan      Niles MI District

gt         Greater Traverse        Traverse City MI District

oc         Oakland County          Troy MI District

oc1         Oakland County          Waterford MI District

mi         West Michigan           West Michigan MI District

District map can be found here

Good explanation, Kevin. I have a few more notes. The following 3 Event codes are artifacts of the 3 regionals in Michigan before the District System:

Code:

     

dt         Detroit Regional                 Detroit MI District

mi         West Michigan Regional           West Michigan MI District

gl        Great Lakes Regional           Michigan State Championship

These 3 prior regionals is the reason MSC has 18 qualifying spots for Championship. MSC is the only event that can ensure that some of its qualifying spots are filled by a team going to Championship. If a team that is already registered for Championship is in the top 9 of reamining point totals (after the 9 award qualifiers), that spot is then offered to the team with the next highest points in the FiM rankings (at other regionals, this unused spot is offered to the general waitlist). At least that is how I understand the 9 remaining qualifying spots based on the last few years.

Also, Waterford (OC1) is the only event code with a "1" included in it. Other event codes in the same area use a 2 (MN2, ON2, WA2). As a computer engineer, I can understand indexing arrays using starting at zero, but the inconsistency between the 4 events confuses me. MN2 (North Star) started in 09 while the rest are new this year, so Waterford should be OC2 for consistency. When you generate OPRs and use frclinks.com & twitter hashtags as much as I do, the event codes become second nature/shorthand.

Re: 2011 Archimedes Division

In the end it comes down to scouting. Our score is lower than it should be in some ways. Once we actually got our robot playing properly (minus the one time when our Autonomous mode actually reversed, ran into the robot behind us, and lodged them into the rear wall), we played with extreme accuracy. Ahh well - next year we will have to go to two regionals.

Re: 2011 Archimedes Division

OPR is a representation of an individual robots contribution to the score of their alliances. OPR is calculated using matrix algebra. This approach helps to compensate for having stronger or weaker alliance partners.

Ultimately statistics derived from final scores will always have flaws. They are a useful jumping off point, and talking point before the event, but any team worth their salt won't be considering these numbers at all for alliance selection.

Re: 2011 Archimedes Division

Its not a big deal. I was just wondering how the OPR was calculated.

Re: 2011 Archimedes Division

SWEET! 74 is in Archimedes!

Re: 2011 Archimedes Division

Quote:

Originally Posted by bladetech932 (Post 1053334)

OK, then could some one explain what factors in to OPR

Qualification match scores and partners are the only factors. Here is my most recent explanation.

Quote:

Originally Posted by MysterE (Post 1053338)

No metric based on prior matches is a replacement for good scouting of individual robots at the competition. These OPRs are calculated for single events and are not calculated across events. The best teams at weak events tend to have a inordinately high OPRs. However IMHO, OPR is better than WLT ranking, Avg score and of course bad scouting (including shout out your team numbers from the crowd). I have seen enough teams struggle through Alliance Selection that would have been much better off running OPRnet on their regional Friday night and just using that list (and hope they pick someone who has a good list based on actual good scouting)

Re: 2011 Archimedes Division

Quote:

However IMHO, OPR is better than WLT ranking, Avg score and of course bad scouting (including shout out your team numbers from the crowd).

Hmm - guess that means I should nix the megaphones - and just when I was getting our round-robin 3337 down with the group. Though on a more serious note, while yelling your numbers doesn't help, I did find that gracious professionalism goes a long way in making a good impression on a top eight team.

Re: 2011 Archimedes Division

3467 Windham Windup is so ready for Archimedes!!!!!