Re: Ballistic Pro Ladder
Posted: Tue 23 Jul , 2013 10:25 am
Skill is now just a flat value based on the weapons you use. If you use MARS-3 for example, you're skill 3.5
Can you post the exact calculation?Izumo_CZ wrote:I've played BW for a while after a while (clearly EFR'd, muh skill). Seemed to me that machinegun spam (machineguns in general actually) is quite stronger than it used to be.
@Butcher: Data decay: sum kills, deaths, thaws, if it's greater than 3000 (atm) then divide it equally so the sum will be 3000. Inactivity decay: affects weighting ratio between your data and the average.
Base 3000Izumo_CZ wrote:The exact calculation:
When (kills + thaws + deaths) > 3000, then they are normalized by 3000 / (kills + thaws + deaths), so (kills + thaws + deaths) = 3000 (the data decay). Then your effi = (kills + thaws) / deaths and weight = (kills + thaws + deaths) are calculated.
I think you mean->ratio = (activity * weight^2) / (weight^2 + avg_weight^2) + (1-activity)* (1 - weight)^2) / (weight^2 + avg_weight^2);Izumo_CZ wrote: After then, Bayesian estimate is made based on the amount of your data: ratio = activity * (1.0 * weight^2) / (weight^2 + avg_weight^2) + (0.0 (1 - weight)^2) / (weight^2 + avg_weight^2); this is now slightly scaled, so when weight = 3000 (with activity = 1.0) then ratio = 1.0. avg_weight is the weight of the average, which is now 500.
bayes=1*0.849797962+(1-1)*1= 0.849797962 (avg_effi not known assumed 1, anyway does not affect the calculation)Izumo_CZ wrote: Then bayesian is calculated: bayes = ratio * effi + (1 - ratio) * avg_effi (avg_effi is the average efficiency of the server), this is in interval 1.0 - 0.0. And your skill is 10 * bayes, so we get the interval 10.0 - 0.0. It's actually quite simple math, only a bit more difficult to imagine on the first time. Thaws are normalized when converting to kills ofc (thawing ~ 2.5 players by proxy = 1 kill, or thawing 1.25 players by weapon (HMC etc.) = 1 kill).
Hey fuck you buddy, I have the 3rd highest thaws in the top 10When you are irobot noob then you have low deaths, high kills, and very low thaws.
So lets assume I have :Izumo_CZ wrote:The webpage shows total kills / total deaths, not the current values (not updated to that yet ). Each time the current values sum exceeds 3000, it will reduce it to 3000, so historical data decay over newly collected data and will erase the initial deaths for unexperienced players. iRobot currently has: 2391.5 K, 458.8 D, 149,7 T. Indeed I had a mistake in the effi calc: (kills + thaws) / (kills + thaws + deaths), and it's just as you figured. Avg effi is 4.67 atm.
It's quite recent change, so it didn't kick very much yet.