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Miffyli

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Wednesday, May 25th 2016, 6:13pm

[Statistics, Updated 26.5] Analysing differences between PC and console soldiers

Update 26.5 : Modified estimator in next post to also show individual variables and their weights.

Disclaimer: This was done as a toy experiment, and as such has mistakes/parts that could use more experiments. Also Wikipedia links are used just to give you quick way to check whatever those things are.

You can find the platform estimator in the next post

Lately I have been toying around and learning about classification tasks and methods, and decided to toy around with BF data once again. This time
I wanted to check if estimating soldier's gaming platform (pc or console) from bunch of variables is possible. I needed dataset that included different platforms, and
thankfully PsyOps research shared their BF3 player dataset. Only 22 of the provided variables were used (you can find them in the picture).

Analysis proceeded as follows:
  1. Load wanted variables
  2. Divide each variable by time (eg. "kills" turns into "kills-per-minute", "vehiclesDestroyed" turns into "vehicles destryed per minute" etc)
  3. Standardize variables using zscore
  4. Use linear discriminant analysis (LDA) to maximize the separation between pc and console players

As a result the system was able to classify soldiers correctly 85% of the time with both training and testing set (no overlapping samples).

You can try the system in the next post by using a thing I quickly built to see what it says about your soldier. LDA also provides
coefficients for each variable which give rough idea does the variable contribute to being console or pc player. PC players were classified
as 0 and console as 1, thus positive weights contribute to being on console platform.

Weights of the variables


Note again that all these variables were divided by gameplay time.
Rough notes based on these weights:
  • Console players play more rounds per time (more tdm/dom?). They also seem to play more kill-based game modes (again, tdm/dom?)
  • Accuracy seems to be in PC's favour: Hits and headshots are major contributors to PC side
  • PC players seem to play more as a team with resupplies and heals on their side
  • ... That said, repairs are on console's side


However there are problems and refine-able parts in these quick experiments:
  • Lots of dependent variables. Eg. shots, hits and suppression are all related to shots fired, vehicleskills - vehicledestroys - vehicletime are dependant and so on.
  • No other classifiers were tried than LDA
  • Variables were hand-picked, and other not included variables (eg. SPM) could give indication on platform
  • As mentioned in papers done in PsyOps research, the provided dataset has bias towards more expert players (players who check bf3stats and similar sites tend to be more experienced)
  • This was done in two days and code was repeated way too many times, so most likely is missing other problems as well
Links to users' thread list who have made analytical/statistical/mathematical/cool posts on Symthic:
  • 3VerstsNorth - Analysis of game mechanics in BF4 (tickrates, effects of tickrate, etc)
  • InterimAegis - Weapon comparisons/scoring.
  • leptis - Analysis of shotguns, recoil, recoil control and air drag.
  • Veritable - Scoring of BF4/BF1 firearms in terms of usability, firing and other mechanics.
  • pmax - Statistical analysis of BF4 players/games.
  • Miffyli - Random statistical analysis of BF4 battlereports/players and kill-distances. (list is cluttered with other threads).
Sorry if your name wasn't on the list, I honestly can't recall all names : ( . Nudge me if you want to be included

Miffyli

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Wednesday, May 25th 2016, 6:13pm

This system uses BF4Stats to fetch your soldier information. Make sure your soldier info is updated at BF4Stats before using this system

Fractions represent the probability of given soldier belonging to PC or console platform. You can also think them as rough 'does my playstyle and preferences belong statistically to PC or console group

You must also input your soldier's platform to fetch correct info from bf4stats. However this information is not used in calculations.

Variables chart shows contribution of each individual variable (negative = towards PC)


Platform:
Name:

Links to users' thread list who have made analytical/statistical/mathematical/cool posts on Symthic:
  • 3VerstsNorth - Analysis of game mechanics in BF4 (tickrates, effects of tickrate, etc)
  • InterimAegis - Weapon comparisons/scoring.
  • leptis - Analysis of shotguns, recoil, recoil control and air drag.
  • Veritable - Scoring of BF4/BF1 firearms in terms of usability, firing and other mechanics.
  • pmax - Statistical analysis of BF4 players/games.
  • Miffyli - Random statistical analysis of BF4 battlereports/players and kill-distances. (list is cluttered with other threads).
Sorry if your name wasn't on the list, I honestly can't recall all names : ( . Nudge me if you want to be included

Sheepnub

I pity the wool

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Wednesday, May 25th 2016, 6:29pm

80% Console

:|
"I put aside a few sceptics, the types of decency in the history of philosophy: the rest haven't the slightest conception of intellectual integrity."
Friedrich Nietzsche


Best of epic quotes :D

Spoiler Spoiler

Just realized it's 4/20 tomorrow


Thanks for the heads up!
*Logs out of Symthic in preparation*

Hardline is a fun and sometimes silly Cops and Robbers sorta thing and I think that's great. Or it would be if it didn't suck.

>littlebird passanger, semi-auto frag rounds
>gunship OP

Meanwhile at DICE-headquarters during BF4's release:

I'm pretty sure there's a massive post-it on every desk "DON'T FUCKING TOUCH ANYTHING THAT IS ACTUALLY DOING WHAT IT'S SUPPOSED TO BE DOING"

UCAV:
"Hey guys remember how stupid prenerf mav was?"

"Lets add c4 to it."

The World Champion went to China once.

They called me a Gweilo.

So I kicked a big fucking hole in their wall and let all the Mongolians in.

just thought I'd share.


The thought of Assaults running out of ACE 23 rounds mid firefight, Engineers facing the rear of an unaware MBT with no rockets left, Recons unable to...Whatever the fuck they do. These are the things that keep me up at night ;(


About hunturk:
I don't know what's funnier, the video itself of the fact that an unlisted video has more views than most of your normal videos :P

...


You just live to hit people upside the noggin with a Math Bomb, don't you?

[context] Maybe it's the UK's overly aggressive porn filter at work. After all, it does have the word "monkey" in it and monkeys have been known to have sex so...


Previously, at DICE HQ:
"Ok guys, the password is "epic dream worlds"; everyone take a letter and do your best to turn it into into something random that we can put into a picture!"


I assume a functional game (BF4) also.

Aww!
*pinches cheeks*
So cute!


But but but

He's a Youtuber ;(

There's no way he doesn't know what he's talking about


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4

Wednesday, May 25th 2016, 7:52pm

I'll bite, since I refresh BF4Stats daily in order to get accurate individual weapon accuracy stats, which is not something you can get from Battlelog Reports.



Here is my BF4Stats page. You can consider this also as me coming out of the closet 8)

TheStiggyOne - BF4 Player stats

I play to what I consider to be my primary weapons' strengths, so I'm never first on the objective (and thus sometimes miss out on vital Flag Capture points as I get onto the flag too late), thus the low-ish SPM. KPM is also low due to the high TTK of my chosen weapon playstyle.

I definitely get way more Repairs than Revives / Heals / Resupplies because I stay away from Locker / Metro.

Weapon accuracy are creeping up thanks to the new monitor as endorsed by Miffyli, but is a bit too late to affect the overall stats too much due to sample size. Also by running Suppressor but staying in mid-long range (50m+) accuracy will suffer.

Headshot to Kill ratio (and overall headshot % in general) is low, because DMR damage model is so consistent (plant 3 hits from "top of the head to tip of the toe," as the manager of my local paintball field likes to say in his orientation speech) that I don't make a conscious effort to aim for the head. My headshots are usually just due to having nothing else to shoot at, or recoil-induced accidents.

That adds up to ~60% Console you see above.

Miffyli

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Wednesday, May 25th 2016, 8:03pm

@Veritable

Yeah that's pretty much how this works. There are other components too to the calculation but as far as I understood from sklearn LDA source code shown weights are the biggest part.
I figure the system could be way more accurate using other variables and something more sophisticated, but where is the fun in getting 100% vs. 0% always? ^^

Btw I might add another chart too that shows per-variable weight for given soldier, so you can see what aspects move you towards consoles or PC.
Links to users' thread list who have made analytical/statistical/mathematical/cool posts on Symthic:
  • 3VerstsNorth - Analysis of game mechanics in BF4 (tickrates, effects of tickrate, etc)
  • InterimAegis - Weapon comparisons/scoring.
  • leptis - Analysis of shotguns, recoil, recoil control and air drag.
  • Veritable - Scoring of BF4/BF1 firearms in terms of usability, firing and other mechanics.
  • pmax - Statistical analysis of BF4 players/games.
  • Miffyli - Random statistical analysis of BF4 battlereports/players and kill-distances. (list is cluttered with other threads).
Sorry if your name wasn't on the list, I honestly can't recall all names : ( . Nudge me if you want to be included

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Wednesday, May 25th 2016, 8:11pm

Though, your "PC-ness Score" might be slightly skewed by the folks who LIVE on Locker and thus have 50k kills and 30% accuracy with their AEK Comp + Stubby + Coyote because they don't need to shoot at anyone further than 10m. Not to mention high Headshot % due to everyone is head-glitching.

Then again, maybe THEY are "mainstream" and _I_ am the weird one :P

Miffyli

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7

Wednesday, May 25th 2016, 8:21pm

Though, your "PC-ness Score" might be slightly skewed by the folks who LIVE on Locker and thus have 50k kills and 30% accuracy with their AEK Comp + Stubby + Coyote because they don't need to shoot at anyone further than 10m. Not to mention high Headshot % due to everyone is head-glitching.

Then again, maybe THEY are "mainstream" and _I_ am the weird one :P

True, but also at the same time number of kills (lots?) would move them towards console end, same with suppression (I would assume, don't know for the fact).

But yeah, without more priori knowledge (eg. knowing how many console players play locker) it's hard to say. However if all game-mode/map distributions were same among console and pc players, this shouldn't reflect and get skewed by those.

And ofc "they being mainstream" can be the case :D. Again, can't know if many of these players were locker-grinders. At the very least, these averages are skewed to more experienced player side due to the bias in dataset.
Links to users' thread list who have made analytical/statistical/mathematical/cool posts on Symthic:
  • 3VerstsNorth - Analysis of game mechanics in BF4 (tickrates, effects of tickrate, etc)
  • InterimAegis - Weapon comparisons/scoring.
  • leptis - Analysis of shotguns, recoil, recoil control and air drag.
  • Veritable - Scoring of BF4/BF1 firearms in terms of usability, firing and other mechanics.
  • pmax - Statistical analysis of BF4 players/games.
  • Miffyli - Random statistical analysis of BF4 battlereports/players and kill-distances. (list is cluttered with other threads).
Sorry if your name wasn't on the list, I honestly can't recall all names : ( . Nudge me if you want to be included

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Wednesday, May 25th 2016, 9:00pm

I got 91.3 PC

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: Jun 5th 2015

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Wednesday, May 25th 2016, 10:20pm



I checked three of the people I play the most with as well, if you are interested in that:

All of use play mostly conquest. All of us have about equal accuracy. One of us NEVER plays medic, and neither of us play much support. The one never playing medic had the most "console" score (61%, opposed to us others who had 13% to 8%). He also plays the most engineer (so he also reps). The one of us three occasional medics who plays the most support had the most "PC" score.

signature 2.2

Things I support
ammo regen pls

Quoted from "NoctyrneSAGA"

_____
When I play with it [Autoloading 8] I feel like I am batman taking out 1 after 1 baddie while they feel helpless and don't know who is talking out their mates.
Remove 3D spotting. Itís a mechanic that rewards bad eyesight.
Wanna help your team by sneaking through enemy territory to provide spawns? THIS IS NOT TEAMWORK FGT I HOPE YOU RUN OUT OF MOTION BALLS TOO EARLY TO BE SUCCESSFUL
Wanna be Javelin squad but only have two guys? BETTER NOT GET YOUR SOFLAM KILLED FGT THIS IS NOT TEAMWORK WITHOUT A SUPPORT DUDE DROPPING AMMO ON YOU EVERY 2 MINUTES
Please post your best M1916 clips Magazines *fixed*.


DICE pls

Squadmate Healthbars in the HUD
Minor console QoL improvements
Ping Tool idea
"Wants to talk" tag for squad menu
Adding Suppression Confirmation
Spotting suggestions

Posts I should finish sometime:
Squad priority vehicle system (and anti stealing suggestion)
Scoring system flaws (and concept)
Battlefield definition
New helicopter idea
Suppression rework
Flow, immersion and fun in battlefield
Specializations: ideas and system rework
Gadget reworks and ideas
Why limited infinite ammo would be awesome
Other bitesize ideas



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Wednesday, May 25th 2016, 11:37pm

Miff, i have to remember you though, that bf3 on console had no more than 24 player servers.
"I'm just a loot whore."


stuff mostly unrelated to BF4 that interests nobody



bf4
on 13/05/2016
23rd M320FB user on pc(13/05/16)
rush mode score RANK:2794 TOP:2% OUT OF:215398
obliteration mode scoreRANK:994 TOP:1% OUT OF:159466
handgun medals RANK:2236 TOP:2% OUT OF:143874
longest headshot RANK:9512 TOP:4% OUT OF:257589
recon score RANK:10871 TOP:4% OUT OF:274899
general score per minute RANK:10016 TOP:4% OUT OF:294774

bf3
31/3/2012 4:58:

Headshot distance RANK:493* TOP:0%
Revives per assault minute RANK: 6019 TOP: 3%
Headshots / kill percentage RANK:25947 TOP:13%
MVP ribbons RANK:18824 TOP:11%

*= 6 if we not count the EOD BOT headshots

@kataklism

ARGUMENT DESTROYED 100

ENEMY KILLED [REASON] JSLICE20 100


WRITING SPREE STOPPED 500

link to full-size old avatar:
http://i.imgur.com/4X0321O.gif