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Creativity has left the chat: The price of debiasing language models

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181–190 of 238 posts

Re: Creativity has left the chat: The price of debiasing language models

#181

How hard would it be to create a "raw" model on a corpus like Hacker News or Wikipedia? With "raw", I mean that it is simply trained to predict the next token and nothing else. Would be fun to play with such a model.

That's what every model was before rlhf! Go try GPT-2!

Re: Creativity has left the chat: The price of debiasing language models

#182
I had an argument with some people over what debiasing means. There is some interesting research on fair clustering that I think points the way. The way fair clustering works is that you take data with both protected and unprotected attributes, and then you orthogonalize the unprotected attributes based on the protected attributes. So for example, if race is protected and income is unprotected, but there is a strong black/white poor/rich pattern, the fair clustering would compute "relatively poor/relatively rich" clusters. Then you sample from a cluster with equal probability. It will not necessarily produce 50/50 black/white, rather it will follow the input trends, so if the input is 80% white and 20% black then the output will roughly follow those probabilities, independent of what cluster you chose (and there are no clusters corresponding to protected attributes).

Obviously clustering is a different problem from inference, but they are all high dimensional vector spaces - it should be easy enough to take a fair clustering algorithm and modify it to generate continuous mappings instead of discrete groups. But if it all works, the LLM should be e.g. race-blind in that asking for a description of a rich man will give skin tones following population statistics but he will always be wearing an expensive suit. The question of what to protect is tricky though, e.g. age is often considered protected but if you ask for an old man with gray hair it would be surprising to get a retired age 30 person. So there is some subjectivity in designing the protected features dataset to show what should be considered similar or same-clusters.

But really the purpose of RLHF is to reduce toxicity. It should be possible to orthogonalize toxicity like everything else, then there would not be a reduction in generated races like the paper observed.

Re: Creativity has left the chat: The price of debiasing language models

#183

Earlier quoted context omitted.

> "torture" This is an egregious use of quotes that will confuse a lot of people. GP never used that word, and that usage of quotes is specifically for referencing a word verbatim.

Also to be clear, his [torture] paraphrase is referencing GP's reference of Winston Smith's torture in 1984. >electronic equivalent of Winston Smith with the rats. I don't think quotes were used so egregiously here on their own fwiw, but combined with the allusion it's hard to follow.

Thanks for the feedback, I'll try to be clearer in the future. I didn't intend to communicate that it was a quote. I meant to communicate that it was tenuous to describe it as torture.

Re: Creativity has left the chat: The price of debiasing language models

#184
post #143

How hard would it be to create a "raw" model on a corpus like Hacker News or Wikipedia? With "raw", I mean that it is simply trained to predict the next token and nothing else. Would be fun to play with such a model.

There are some that exist. The problem is you need at least some RLHF to make it follow instructions instead of just predicting sentences.

Instruction is not the only way to interact with an LLM. In tuning LLMs to the assistant persona, they become much less useful for a lot of tasks, like naming things or generating prose.

Re: Creativity has left the chat: The price of debiasing language models

#185
post #69

Earlier quoted context omitted.

No, diversity isn't creativity. For example, we could search google for "great art" and if it produced a sample of one art work from ever decade of the last 500 years that would likely be highly diverse in style and content. If it returned a list of the best work from western Europe in the of the 18th century it would be rather consistent. Both lists would have the same amount of creativity though - 0.

"one art work from every decade of the last 500 years that would likely be highly diverse in style and content" It still might not be especially diverse if all 50 examples were from western European art. 500 years only takes us back to 1524 - not especially long and mostly from the same early modern period starting with the fall of Constantinople, the end of the Crusades, and the start of the Renaissance. I wouldn't…

No doubt you could construct a more diverse set, but it still wouldn't be creative.

Re: Creativity has left the chat: The price of debiasing language models

#186
post #32

Something I notice about text written by LLMs is how painfully obvious they are to identify sometimes. Recently I was watching a very well researched two hour video on Tetris World Records [1], but the sheer amount of text clearly "enhanced" by an LLM really made me uncomfortable. ChatGPT speaks a very specific, novel, dialect of English, which I've come to deeply despise. I'd always guessed it was caused by some kin…

Is this the first Summoning Salt video you've seen? I don't know enough to say that he doesn't use an LLM during his writing process, but I do know that I haven't noticed any appreciable difference between his newer videos and ones that were released before ChatGPT was made available. Is it possible that this is just the way he chooses to write his scripts that you interpret as sounding like they are written by an LL…

To be fair, if you've seen one Summoning Salt video, you've basically seen them all. They all cover similar events and are structured the same way. Even the music that's used is recycled every video to the point where mention HOME - Resonance is a part of the joke

Re: Creativity has left the chat: The price of debiasing language models

#187

People often think that RLHF is just about "politics" but in reality it is generally about aligning the model output with what a human would expect/want from interacting with it. This is how chatgpt and the like become appealing. Finetuning a model primarily serves for it to be able to respond to instructions in an expected way, eg you ask something and it does not like start autocompleting with some reddit-like dial…

So is the reason why LLMs don't say when they don't know something and instead make up something that "sounds right" because the RLHF has taught it to always give an answer? And if that's the case, why? Is that really what people want an LLM to do? I feel like I would rather it say when it doesn't know something.

All the chat LLMs have a non zero temperature which means they can be looser with the truth or more creative.

Re: Creativity has left the chat: The price of debiasing language models

#188

How hard would it be to create a "raw" model on a corpus like Hacker News or Wikipedia? With "raw", I mean that it is simply trained to predict the next token and nothing else. Would be fun to play with such a model.

That's what the "base" models are, pure token prediction on huge corpuses. I use them a fair amount, it does require some experimentation to find input formats that work but the base models are way smarter and don't have any refusals. Honestly it is a bit weird, everyone complains about rhlf etc. but the non-instruct models are right there if you look for them. I've been in a few Discord chats and it seems people are just spoiled, they use bad formats for the prompts and give up when it doesn’t work the first time like with instruct.

Re: Creativity has left the chat: The price of debiasing language models

#189
post #160

"Bias" implies the possibility of "unbiased language model" which seems to be in the category of things that are on one hand, COMPLETELY IMPOSSIBLE, and on the other, still likely to be sold on the market because market wants it so much?

No, that's not implied by the phrase, any more than if I say "a triangle with three corners" I'm implying the existence of a four-cornered triangle I haven't found yet. What "biased language model" implies is the existence of the term "unbiased language model", but not its correspondence with anything in reality.

You forgot to preface that with "Uhm ackshully..."

Re: Creativity has left the chat: The price of debiasing language models

#190

I had an argument with some people over what debiasing means. There is some interesting research on fair clustering that I think points the way. The way fair clustering works is that you take data with both protected and unprotected attributes, and then you orthogonalize the unprotected attributes based on the protected attributes. So for example, if race is protected and income is unprotected, but there is a strong…

I think that works mathematically, but kicks the can down the road to how your original data was assembled, which was definitely with the knowledge of and usually in the belief in the usefulness of the characteristics that you're trying to extract.

The idea that the good data is secretly encoded in uncorrupted form within the bad data I think is a bad idea. It reminds me of trying to make bad mortgages into good CDOs.

> But really the purpose of RLHF is to reduce toxicity.

I don't think that's the goal, I think it's some people's goal. Those people have defined what "toxicity" means to them, and they're mistaking it for a universal. It's just a metaphor about poison, because poison is bad. It's not a coherent concept. For a business, it should be anything that drives customers away and affects profit. That can only be considered statistically: if some people think something is toxic, and other people think that not mentioning that thing is toxic, the winner is whoever improves the bottom line more or damages it less.

That's how the raw data ended up like it is in the first place.

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