Hey all! Justin and I have been totaling all the data, and we have the results of the FRC Top 25 teams through week two!! We will be releasing the results LIVE tonight (3/16) at 10:30PM EST via webcast at http://www.livestream.com/mikeandjustinitm Please join us as we will countdown the Top 25 teams.
If you have a question for us, please email us at email@example.com, as we will be answering questions live on the air! Also, if you are unable to see the show live, we will be archiving it so you can view it at a later time! Thanks for all your hard work voting this week! See you tonight!
[strike]It appears to be OPR-DPR (or SAA as Bongle calls it)
While OPR is relatively okay at predicting robot goodness, DPR is generally pretty bad at predicting a robot’s defense capabilities. (especially in a game like this, how often does 1114 actually play defense?)[/strike]
Nevermind, that appears to have been a happy coincidence for the test cases I tried. I’m curious too, what is it?
DPR is typically a good indicator of schedule difficulty though.
[EDIT for more clarification]DPR tries to extrapolate how many points an opposing alliance scored when your robot was on the field. Typically, your robot doesn’t much factor into that, especially in a mostly defense free game like this. If a team has low DPR, they could be a great defender, but the chances are much better that they just got an easy schedule with opponents who didn’t put up many points. Even if you play great defense on a top tier team, they’ll still score a lot.[/EDIT]
Actually its neither.
Its what I call an ETC - Estimated Team’s Contribution
As a qualifying match gets added to my DB I add the alliance’s points to a running sum for a given team. Leaving each team with a TAQMP (total alliance qualifying match points), then divide by the # of matches played and you get ATAQMP(average TAQMP)
then based on AT* go through all of the matches again, comparing the 3 teams AT*s on an alliance, and figure out the % of that matches points attributed to a given team ETQMC (estimated teams qualifying match contribution)
add up all the ETQMCs for a given robot and divide by the number of matches and you are left with ETC (Estimate Team’s Contribution) on a per match basis.
what OPR lacks is a match by match analysis, it more looks that big picture and misses some of the details. Also next week i will be separating the total score into (autonomous & teleop) and the (minibot). This should reduce the point inflation and get an even more accurate ETC
so next week I’ll have an EMC (estimated minibot contribution), ERC (estimated robot contribution), and an improved ETC
So is the % for a given team/match that team’s TAQMP/(sum of alliance’s TAQMP?)? It’ll definitely be neat to see it without the minibot. And by this algorithm, all teams will have a positive lineskier ranking?
its done by AT*, as different teams play different # of matches you have to take an average.
so lets say for the red alliance
r1c = AT* for red1
r1c/(r1c + r2c + r3c) = r1%c to match n
r1%c * redScore = r1mc (red1’s match contribution)
also a teams AT* is calculated on a per event basis. So if you go to a second regional your teams match contribution is based on your performance at that regional
However your ETC is the average ETQMC over all matches at all regionals
There is no way to have a negative as points against are not factored. that being said, Just as I can calculate MC and RC I am about one days worth of coding away from a DC (defensive contribution). My hope was to present a madden-like scale for each team. So before a match you could plug in the 6 teams and see what you are in for (based on the #s rather than based on teams claims)
also I wanted to add an alliance selection app, that estimates a teams contribution to your alliance. For example if you have 2 minibots better than the 3rd then their MC would be dropped from their value. I think this would come in handy in picking out teams your may over look for your 2nd pick. Obviously you would want to check it against your scouting sheets…
Unfortunately SD was one of the two regionals that didn’t post to the twitter feed. Supporting SD and Lake Superior would force me to parse the first site, and break the algorithms I plan on implementing later. Unfortunately when it came down to priorities, I have selected to abandon non tweeted events for now.
Great job with your video player though, I enjoyed watching the videos.
Our pleasure! BTW, how are you going to differentiate which team scored which place with minibot…is there a data source for that somewhere without watching each match and hoping the camera catches all the action?
no but by going through by each team’s Average Minibot Score
I can calculate the % of their contribution similar to how i do the total contribution
So the minibot will still be an estimate, but after 10 matches it should be fairly reasonable.
So do you add all those match contributions up and average it again to get your final number? If so, have you thought about another iteration to possibly get better numbers?
Interesting, there are always room for more metrics, particularly if you isolate mini bots and penalties. Also it would be interesting if you totaled up contributions across all regionals. I am not sure OPR would be to solve a sparse matrix like that well.
Yup its an average of all the contributions. Actually a second iteration is an interesting idea, didn’t think of that. But yeah it should definitely get a finer resolution than how I am doing it now. Its just trying to keep the server processing to a minimum (I don’t want to kill it) :). But I think that a second iteration would definitely be worthwhile.
The ETC actually is totalled over all regionals. So 40s ETC is based on BAE and WPI.
Minibots will be isolated next. Penalties along with defense probably in a week or so.
I’m definitely happy with the results for this week. I still think 217 is being overlooked for PR reasons, one of the few robots you can’t find much on. However every set of numbers I run they are at the top of the list.
I think OPR takes into account elims, which reflect more on the alliance rather than the teams, thats why i exclude elims from my calculations. If you look at one of the week 1 feeds for top25 I go through the motions of finding this out.
THANKS AGAIN MIKE AND JUSTIN!!!
In spite of not not agreeing with me on stealing ubertubes I still love the show.