Jump to content
You need to play a total of 5 battles to post in this section.
Grand_Viceroy_Zhou_Ziyu

How do Warships Today and WoWS Numbers calculate stats differently?

12 comments in this topic

Recommended Posts

Members
2,128 posts
4,750 battles

So I've been comparing both sites, and they have different statistics for the ships in just about every category from win rate to average damage. Their opinion of me as a player also seems to be quite different, with WoWS Numbers a lot less flattering. Warships Today has me at a 1163 WTR, light blue, which is 'very good.' WoWS Numbers has me at a 1315 WTR but on their site it's 'average', albeit high average. According to them I am 'Good' in battleships with a Personal Rating of 1351 (+199 to very good) and 'Average' in cruisers with a Personal Rating of 1285 (+65) until good. In your opinion, which site is more trustworthy, and how do they differ in the methods they use to rate a player? At least from my experience, 'Good' and 'Very Good' (green and light blue) on WT are 'Average' on WoWS Numbers.

Edited by Zionas

Share this post


Link to post
Share on other sites
Members
3,484 posts
6,184 battles

https://na.warships.today/help/warships_today_rating

Not sure if WoWs Numbers has has their formula available.  Main differences are how things are weighted.  Some favor damage more than kills as an example. 

Neither is more 'trusrtworthy' ore 'reliable' as the calculations are based on what they want to weigh to try and determine a level.

Edited by CylonRed

Share this post


Link to post
Share on other sites
1,826
[ARRGG]
[ARRGG]
Members
5,770 posts

Same way the Cubs and White Sox  play Baseball, Can't  let you see the  line up till the game starts

Share this post


Link to post
Share on other sites
2,265
[FOXEH]
Beta Testers
8,804 posts
15,291 battles
13 minutes ago, Zionas said:

In your opinion, which site is more trustworthy

The one which makes you look the best, of course.

  • Funny 2

Share this post


Link to post
Share on other sites
2,819
Members
5,574 posts
7,121 battles

In the past, some said that warships.today values were off, and no one had any idea how they calculated them. In my mind, I remember conversations dealing with damage, among other things.

One value you never pay attention to from any sites are personal ranking because its not known fully how that is calculated either.

 

Edited by Wulfgarn

Share this post


Link to post
Share on other sites
896
[SYN]
[SYN]
Members
2,253 posts
8,634 battles
2 hours ago, grumpymunky said:

https://wows-numbers.com/personal/rating

 

https://na.warships.today/help/warships_today_rating

 

It seems wows-numbers puts far more weight on damage than warships.today does.

 

Yep, it's right there.

WTR = 50% damage, 30% kills, 20% wins

PR = 61% damage, 26% kills, 13% wins

Share this post


Link to post
Share on other sites
174
[R-R-R]
Members
975 posts
6,634 battles
2 minutes ago, pikohan said:

 

Yep, it's right there.

WTR = 50% damage, 30% kills, 20% wins

PR = 61% damage, 26% kills, 13% wins

PR formula is more detailed that shows the normalization they used as well.

WTR didn't show that. So we can't draw conclusion that PR values damage more.

Share this post


Link to post
Share on other sites
896
[SYN]
[SYN]
Members
2,253 posts
8,634 battles
2 minutes ago, Exciton8964 said:

PR formula is more detailed that shows the normalization they used as well.

WTR didn't show that. So we can't draw conclusion that PR values damage more.

 

Quote

The source code for calculating Warships Today Rating is available as a JavaScript implementation.

 

Unless you are claiming that they actually do it differently even though they say one thing?

Share this post


Link to post
Share on other sites
174
[R-R-R]
Members
975 posts
6,634 battles
2 minutes ago, pikohan said:

 

 

Unless you are claiming that they actually do it differently even though they say one thing?

Had a quick look. In WTR

var wtr = fixNaN(wins) * wins_weight + fixNaN(damage_dealt) * damage_weight + fixNaN(frags) * frags_weight + fixNaN(capture_points) * capture_weight + fixNaN(dropped_capture_points) 

 var damage_dealt = actual.damage_dealt / expected.damage_dealt; var ship_frags = actual.frags / expected.frags; 

 

So for WTR, they simply divide your damage by expected damage.

 

But in PR they do an extra step of normalization

nDmg = max(0, (rDmg - 0.4) / (1 - 0.4))

So the actual weight of damage in PR is 700*(rDmg-0.4)/(1-0.4) while in WTR it is 500*rDmg.

Share this post


Link to post
Share on other sites
Members
440 posts
12,808 battles
10 minutes ago, Exciton8964 said:

But in PR they do an extra step of normalization

That normalization just makes the weight of damage and wins go up at the expense of kills for above-average players.

The 61/26/13 pikohan used is true for perfectly average players.

For those with scores significantly above average, it will be more like 65/20/15.

^ Ignore that part. The damage stays around the 60% while wins become more valuable, but don't exceed the value of kills.

Edited by grumpymunky

Share this post


Link to post
Share on other sites
174
[R-R-R]
Members
975 posts
6,634 battles
Just now, grumpymunky said:

That normalization just makes the weight of damage and wins go up at the expense of kills for above-average players.

The 61/26/13 pikohan used is true for perfectly average players.

For those with scores significantly above average, it will be more like 65/20/15.

I see. Thx for the clarification.

Share this post


Link to post
Share on other sites

  • Recently Browsing   0 members

    No registered users viewing this page.

×