halfcenturyup
Well-Known Member
- Joined
- 12 Oct 2009
- Messages
- 12,119
Are you able to provide links to the analysis of officiating and VAR that you are referring to?
I am aware of PGMOL’s analysis of its own officiating and VAR outcomes that found high rates of correct decisions, and have spoken—as a data scientist with two decades in financial analytics, economic analysis, and statistical fraud detection and prevention—why that shouldn’t be used to form any real conclusions, given the source of the analysis. PGMOL will always find a body of evidence that their officials get the vast majority of decisions correct, and the way in which they defined the analysis universe was highly problematic, as is often the case with attempting to creative quantitative analysis of qualitative assessments. This is without getting in to the flaws of how the actual decisions are recorded and assessed (many decisions aren’t actually recorded because the officials decided not to act in a particular moment, and thus do not should up at all in officiating analysis).
Interestingly enough, prior to the introduction of VAR, PGMOL claimed that officials got 98% of decisions correct. Then, after VAR was implemented, they claimed that it had significantly improved the rate of correct decisions compared to pre-VAR seasons, which would, of course, be statistically highly improbable, even ignoring our ability to analyse officiating and see there is not now a greater than 98% correct decision rate. 98% itself is highly improbable given humans are making the decisions in real time (98% would make PL match officials the single most accurate group on human beings on the planet).
I am also aware of the Sky Sports and ESPN VAR analyses that are also widely accepted is quite dubious by football fans that also happen to have some statistical expertise and understanding of the methodology being used.
I am genuinely curious to dig in to the analyses you have read.
Not sure that's necessary, tbh.
I think it's clear (at least that's my feeling, which I trust more than statistics either side could produce) that referees get the vast majority of decisions "right". Whether it's 85% or 95% doesn't concern me because 80% or 90% of decisions don't really affected the game's outcome.
I think it's also clear that processes aren't robust enough to provide satisfaction to the public that the remaining decisions, that do affect the game's outcomes, are made as fairly and as consistently as possible. I am thinking quality and training of referees, the choice and use of game management techniques, increasingly complex IFAB rules and guidelines, VAR protocols and guidelines, "independent" performance reviews, communication of laws, guidelines and decisions, and the like).
This is a sport based on subjective decision making whether by officials or fans. You will never be able to convince fans of a particular club that decisions that go against them are fair and consistent. That's normal human nature. But fans should be able to watch games as a neutral and think, yes, that decision was made fairly and consistently. Are we getting closer to that with all these new rules, guidelines and technologies? I am not so sure.
Anyway, the guy at the weekend was good enough for me :)