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Study identifies weaknesses in how AI systems are evaluated

oii.ox.ac.uk

11–20 of 204 posts

Re: Study identifies weaknesses in how AI systems are evaluated

#11

I've been getting flagged by high-on-their-own-supply AI boosters for identifying that LLM benchmarks have been obvious bullshit for at least the last year and a half. What changed to make "the inevitable AI bubble" the dominant narrative in last week or so?

Companies are talking about needing trillions of dollars is why.

Re: Study identifies weaknesses in how AI systems are evaluated

#13

Definitely one of the weaker areas in the current LLM boom. Comparing models, or even different versions of the same model, is a pseudo-scientific mess. I'm still using https://lmarena.ai/leaderboard . Perhaps there is something better and someone will pipe up to tell me about it. But we use LLMs at work and have unexplainable variations between them. And when we get a prompt working reliably on one model, we often h…

Psychometric testing of humans has a lot of difficulties, too. It's hard to measure some things.

Re: Study identifies weaknesses in how AI systems are evaluated

#14

I've been getting flagged by high-on-their-own-supply AI boosters for identifying that LLM benchmarks have been obvious bullshit for at least the last year and a half. What changed to make "the inevitable AI bubble" the dominant narrative in last week or so?

Benchmarks in general have this problem, across pretty much all industries. "When a measure becomes a target" and all that.

Re: Study identifies weaknesses in how AI systems are evaluated

#16

I've been getting flagged by high-on-their-own-supply AI boosters for identifying that LLM benchmarks have been obvious bullshit for at least the last year and a half. What changed to make "the inevitable AI bubble" the dominant narrative in last week or so?

The market was down for AI related stocks especially, while down only over 3% it’s the worst week since April, and there’s no single event that is to blame it just looks like market sentiment has shifted away from the previous unchecked exuberance.

Re: Study identifies weaknesses in how AI systems are evaluated

#17
This is solvable at the level of an individual developer. Write your own benchmark for code problems that you've solved. Verify tests pass and that it satisfies your metrics like tok/s and TTFT. Create a harness that works with API keys or local models (if you're going that route).

Re: Study identifies weaknesses in how AI systems are evaluated

#18

I work on LLM benchmarks and human evals for a living in a research lab (as opposed to product). I can say: it’s pretty much the Wild West and a total disaster. No one really has a good solution, and researchers are also in a huge rush and don’t want to end up making their whole job benchmarking. Even if you could, and even if you have the right background you can do benchmarks full time and they still would be a mes…

For what it's worth, I work on platforms infra at a hyperscaler and benchmarks are a complete fucking joke in my field too lol.

Ultimately we are measuring extremely measurable things that have an objective ground truth. And yet:

- we completely fail at statistics (the MAJORITY of analysis is literally just "here's the delta in the mean of these two samples". If I ever do see people gesturing at actual proper analysis, if prompted they'll always admit "yeah, well, we do come up with a p-value or a confidence interval, but we're pretty sure the way we calculate it is bullshit")

- the benchmarks are almost never predictive of the performance of real world workloads anyway

- we can obviously always just experiment in prod but then the noise levels are so high that you can entirely miss million-dollar losses. And by the time you get prod data you've already invested at best several engineer-weeks of effort.

AND this is a field where the economic incentives for accurate predictions are enormous.

In AI, you are measuring weird and fuzzy stuff, and you kinda have an incentive to just measure some noise that looks good for your stock price anyway. AND then there's contamination.

Looking at it this way, it would be very surprising if the world of LLM benchmarks was anything but a complete and utter shitshow!

Re: Study identifies weaknesses in how AI systems are evaluated

#19
post #10
post #8

[flagged]

Any argument to back up your claim?

Not the person you replied to, but I'm a programmer and up until ~3 weeks ago I really only used AI for auto-complete, looking up API information, and constructing arcane CLI commands.

I decided to take a leap and use AI as much as possible to complete a ticket at work. Now, 3 weeks later AI is writing 90% of my code.

Granted, I'm not sitting back sipping on a latte while AI does my job. It's a very interactive process, I spend more time reviewing code and going back and forth with the AI to get the result I want. But it's become surprisingly good.

I wouldn't say I'm anywhere close to 10x more productive, but perhaps 50%.

Re: Study identifies weaknesses in how AI systems are evaluated

#20

I work on LLM benchmarks and human evals for a living in a research lab (as opposed to product). I can say: it’s pretty much the Wild West and a total disaster. No one really has a good solution, and researchers are also in a huge rush and don’t want to end up making their whole job benchmarking. Even if you could, and even if you have the right background you can do benchmarks full time and they still would be a mes…

A/B testing is radioactive too. It's indirectly optimizing for user feedback - less stupid than directly optimizing for user feedback, but still quite dangerous. Human raters are exploitable, and you never know whether the B has a genuine performance advantage over A, or just found a meat exploit by an accident. It's what fucked OpenAI over with 4o, and fucked over many other labs in more subtle ways.

Are you talking about just preferences or A/B tests on like retention and engagement? The latter I think is pretty reliable and powerful though I have never personally done them. Preferences are just as big a mess: WHO the annotators are matters, and if you are using preferences as a proxy for like correctness, you’re not really measuring correctness you’re measuring e.g. persuasion. A lot of construct validity challenges (which themselves are hard to even measure in domain).
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