BV/PCS ratio -- possibly a new way to evaluate judging and other trends?

[Skating91]

Since base value is the only objective metric in figure skating, I thought I would combine it with PCS to get a ratio that shows which rely on attempting complex content for most of their points, and which skaters rely on the subjective interpretation of the officials. I think it is quite interesting, and this is something that can be refined. Obviously not perfect, but it is a start. PCS is affected by errors, but if we used two years of data it would smooth much of this out. Maybe a deduction from a fall should come off base value. It's more the outliers that we are looking at anyway. It would be interesting to sort by federation or region maybe, where the athlete trains, etc. Also, I think this information will be a lot more useful analysing the free skate, so let's wait and see what it will show us. The non-qualifiers can probably be excluded as well to get something more meaningful or even just the top 12.

				BV	PCS	Ratio	Notes
5​	Q	Kaori SAKAMOTO	JPN	28​	35.04​	0.799087​	2-3 combo, but BV would be no higher than 32 normally
28​		Anastasiia GUBANOVA	GEO	23.89​	27.41​	0.87158​	Disaster skate has warped this ratio, but ordinary PCS would not be much higher
17​	Q	Olga MIKUTINA	AUT	26.2​	28.6​	0.916084​
21​	Q	Ekaterina KURAKOVA	POL	26.55​	28.69​	0.92541​
16​	Q	Julia SAUTER	ROU	27.03​	29.12​	0.928228​
2​	Q	Mone CHIBA	JPN	31.93​	34.1​	0.936364​
12​	Q	Niina PETROKINA	EST	29.63​	31.12​	0.952121​
29​		Mia RISA GOMEZ	NOR	22.63​	23.75​	0.952842​
3​	Q	Isabeau LEVITO	USA	32.59​	34.06​	0.956841​	Had a 3T that was not given a <
1​	Q	Alysa LIU	USA	32.59​	33.78​	0.964772​	Had a 3T that was not given a <
27​		Xiangyi AN	CHN	23.38​	23.98​	0.974979​
11​	Q	Chaeyeon KIM	KOR	31.39​	31.86​	0.985248​
10​	Q	Kimmy REPOND	SUI	30.89​	30.95​	0.998061​
4​	Q	Wakaba HIGUCHI	JPN	32.33​	32.39​	0.998148​	Perfect skate
14​	Q	Lara Naki GUTMANN	ITA	30.05​	29.96​	1.003004​
8​	Q	Nina PINZARRONE	BEL	32.09​	31.54​	1.017438​
6​	Q	Madeline SCHIZAS	CAN	31.89​	30.73​	1.037748​	Perfect skate by her standard
23​	Q	Livia KAISER	SUI	27.13​	26.06​	1.041059​
22​	Q	Kristen SPOURS	GBR	27.23​	26.05​	1.045298​
7​	Q	Haein LEE	KOR	32.33​	30.9​	1.046278​
9​	Q	Amber GLENN	USA	34.89​	32.74​	1.065669​	Fell on 3A but only q given, was a clear <
32​		Julija LOVRENCIC	SLO	22.82​	21.23​	1.074894​
31​		Ahsun YUN	KOR	25.19​	23.14​	1.088591​	Disaster skate, but PCS often gets held back
13​	Q	Sofia SAMODELKINA	KAZ	31.63​	28.89​	1.094843​	Brilliant performance
20​	Q	Linnea CEDER	FIN	28.33​	25.55​	1.108806​
30​		Sofja STEPCENKO	LAT	26.02​	23.05​	1.12885​
15​	Q	Lorine SCHILD	FRA	31.09​	27.17​	1.144277​
18​	Q	Alexandra FEIGIN	BUL	29.53​	25.13​	1.17509​
25​		Nargiz SUELEYMANOVA	AZE	27.93​	22.56​	1.238032​
24​	Q	Meda VARIAKOJYTE	LTU	28.03​	22​	1.274091​
26​		Vanesa SELMEKOVA	SVK	29.89​	23.35​	1.280086​
33​		Anastasia GOZHVA	UKR	24.95​	19.49​	1.280144​
19​	Q	Mariia SENIUK	ISR	32.39​	25.27​	1.281757​

				BV	PCS	Ratio
36​		Alexander ZLATKOV	BUL	23.28​	31.12​	0.748072​
12​	Q	Jason BROWN	USA	34.82​	44.44​	0.783528​
38​		Burak DEMIRBOGA	TUR	24.63​	29.71​	0.829014​
24​	Q	Tatsuya TSUBOI	JPN	31.61​	37.51​	0.842709​
34​		Jari KESSLER	CRO	27.5​	32.22​	0.853507​
16​	Q	Deniss VASILJEVS	LAT	36.04​	41.86​	0.860965​
4​	Q	Kevin AYMOZ	FRA	40.7​	45.09​	0.902639​
39​		Davide LEWTON BRAIN	MON	28.79​	30.78​	0.935348​
20​	Q	Vladimir SAMOILOV	POL	35.31​	37.1​	0.951752​
15​	Q	Roman SADOVSKY	CAN	37.9​	39.55​	0.958281​
18​	Q	Adam HAGARA	SVK	35.73​	36.93​	0.967506​
37​		Semen DANILIANTS	ARM	28.96​	29.87​	0.969535​
2​	Q	Yuma KAGIYAMA	JPN	45.8​	47.06​	0.973226​
30​		Yu-Hsiang LI	TPE	32.71​	33.04​	0.990012​
10​	Q	Junhwan CHA	KOR	41.8​	42.18​	0.990991​
14​	Q	Daniel GRASSL	ITA	40.1​	40.26​	0.996026​
11​	Q	Lukas BRITSCHGI	SUI	41.79​	41.91​	0.997137​
35​		Maurizio ZANDRON	AUT	32.95​	33.04​	0.997276​
8​	Q	Andrew TORGASHEV	USA	41.05​	41.15​	0.99757​
17​	Q	Andreas NORDEBACK	SWE	37.53​	37.56​	0.999201​
5​	Q	Shun SATO	JPN	42.5​	42.28​	1.005203​
21​	Q	Daiwei DAI	CHN	36.1​	35.79​	1.008662​
22​	Q	Tomas-Llorenc GUARINO SABATE	ESP	37.19​	35.83​	1.037957​
19​	Q	Mihhail SELEVKO	EST	40.6​	39.11​	1.038098​
27​		Donovan CARRILLO	MEX	39.05​	37.41​	1.043839​
9​	Q	Adam SIAO HIM FA	FRA	45.3​	43.08​	1.051532​
26​		Hyungyeom KIM	KOR	38.01​	36.14​	1.051743​
13​	Q	Vladimir LITVINTSEV	AZE	39.75​	37.46​	1.061132​
7​	Q	Nikolaj MEMOLA	ITA	42.91​	40.26​	1.065822​
1​	Q	Ilia MALININ	USA	49.47​	46.2​	1.070779​
28​		Nikita STAROSTIN	GER	37.51​	34.65​	1.08254​
32​		Edward APPLEBY	GBR	36.43​	33.51​	1.087138​
33​		Kyrylo MARSAK	UKR	36.09​	33.1​	1.090332​
29​		Aleksandr VLASENKO	HUN	35.89​	32.75​	1.095878​
31​		Georgii RESHTENKO	CZE	36.69​	33.33​	1.10081​
25​		Lev VINOKUR	ISR	38.35​	33.82​	1.133944​
3​	Q	Mikhail SHAIDOROV	KAZ	46.75​	40.62​	1.150911​
6​	Q	Nika EGADZE	GEO	44.8​	38.78​	1.155235​
23​	Q	Fedir KULISH	LAT	40.05​	33.23​	1.205236​

 

[Mathematician]

First of all you should reverse the ratio. If you want the ratio to be an indicator of "how much a skater relies on subjective interpretation", I think intuitively a higher number should indicate greater reliance on subjective criteria. Right now you have it reversed.

That being said this is actually a really interesting idea. Though, as you admit, very rudimentary in the form presented. This alone is preliminarily valuable but still easily dismissible. If we could include a more detailed TCS breakdown, for example also tracking GOE-reliance here and include multiple ratios with some sort of aggregate index value it would be fantastic. I imagine it would include specifications of which athletes rely more on which category of PCS!

I do however totally understand why you got no attention for this sort of discussion... I'm sorry about that. I wish we could have a big dialogue about this and develop a unique metric. I don't think comparing purely objective rating with subjective rating is inherently offensive to any skater or nation. I think its very valuable info, and even just very interesting in an of itself as an end!

Good work!

 

[Mathman]

I did not understand the thrust of this "proposal," nor exactly what it is that the OP is proposing. Some skaters earn a lot of base value points for feats of technical derring-do. Some have admirable blade to ice skating skills. Others delight audiences and judges with program s of esthetic merit. Some strive for complementary balance, for others this is not so important.

Well... yes... that's all quite true. Nothing to argue about there.

 

[jenaj]

I don't see what this proves. Maybe that skaters who make more errors get lower PCS? Or that skaters like Kaori Sakamoto will never get less than about 9 average?