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DeepMind: A Generalist Agent

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Re: DeepMind: A Generalist Agent

#181
post #72

Earlier quoted context omitted.

How good is your dog at Atari games, stacking cubes and image captioning? You can actually measure the effect of generality by how fast it learns new tasks. The paper is full of tables and graphs showing this ability. It's just a small model, 170x smaller than GPT-3, has lots of room to grow. But for the first time we have a game playing agent that knows what "Atari" and "game" mean, and can probably comment on the s…

Playing Atari is cool, but it's just another "trick". Training a computer to do progressively more difficult tasks doesn't seem much more impressive than training an animal to do so. I see no evidence in the paper that it can learn arbitrary tasks on the fly. It's very impressive, though.

> I see no evidence in the paper that it can learn arbitrary tasks on the fly.

Neither can we do that. It takes years to become and expert in any field, we are not learning on the fly like Neo. That's when there is extensive training available, for research - it takes thousands of experts to crack one small step ahead. No one can do it alone, it would be too much to expect it from a lonely zero shot language model.

On the other hand the transformer architecture seems to be capable of solving all the AI tasks, it can learn "on the fly" as soon as you provide the training data or a simulator. This particular paper trains over 600 tasks at once, in the same model.

Re: DeepMind: A Generalist Agent

#182
(Former AI researcher / founder here)

It always surprises me at the ease at which people jump on a) imminent AGI and b) human extinction in the face of AGI. Would love for someone to correct me / add information here to the contrary. Generalist here just refers to a "multi-faceted agent" vs "General" like AGI.

For a) - I see 2 main blockers,

1) A way to build second/third order reasoning systems that rely on intuitions that haven't already been fed into the training sets. The sheer amount of inputs a human baby sees and processes and knows how to apply at the right time is an unsolved problem. We don't have any ways to do this.

2) Deterministic reasoning towards outcomes. Most statistical models rely on "predicting" outputs, but I've seen very little work where the "end state" is coded into a model. Eg: a chatbot knowing that the right answer is "ordering a part from amazon" and guiding users towards it, and knowing how well its progressing to generate relevant outputs.

For (b) -- I doubt human extinction happens in any way that we can predict or guard against.

In my mind, it happens when autonomous systems optimizing reward functions to "stay alive" (by ordering fuel, making payments, investments etc) fail because of problems described above in (a) -- the inability to have deterministic rules baked into them to avoid global fail states in order to achieve local success states. (Eg, autonomous power plant increases output to solve for energy needs -> autonomous dam messes up something structural -> cascade effect into large swathes of arable land and homes destroyed).

Edit: These rules can't possibly all be encoded by humans - they have to be learned through evaluation of the world. And we have not only no way to parse this data at a global scale, but also develop systems that can stick to a guardrail.

Re: DeepMind: A Generalist Agent

#183

Earlier quoted context omitted.

I think the best-case scenario is that 'we' become something different than we are right now. The natural tendency of life(on the local scale) is toward greater information density. Chemical reactions beget self-replicating molecules beget simple organisms beget complex organisims beget social groups beget tribes beget city states beget nations beget world communities. Each once of these transitions looks like the de…

Let's be real. Not long from now all creative and productive work will be done by machines. Humans will be consumers. Why learn a skill when it can all be automated? This will eliminate what little meaning remains in our modern lives. Then what? I don't know, who cares?

>Then what?

Growing tomatoes is less efficient than buying them, regardless of your metric. If you just want really cleanly grown tomatoes, you can buy those. If you want cheap tomatoes, you can buy those. If you want big tomatoes, you can buy those.

And yet individual people still grow tomatoes. Zillions of them. Why? Because we are inherently over-evolved apes who like sweet juicy fruits. The key to being a successful human in the post-scarcity AI overlord age is to embrace your inner ape and just do what makes you happy, no matter how simple it is.

The real insight out of all this is that the above advice is also valid even if there are no AI overlords.

Re: DeepMind: A Generalist Agent

#184
post #5

I’m not sure how to word my excitement about the progress we see in AI research in the last years. If you haven’t read it, give Tim Urbans classic piece a slice of your attention: https://waitbutwhy.com/2015/01/artificial-intelligence-revol... It’s a very entertaining read from a couple of years ago (I think I’ve read it in 2017), and man, have things happened in the field since then. If feels like things truly start…

That human intelligence might just be token prediction evolving from successive small bit-width float matrix transformations is depressing to me.

Wait till you find out all of physics is just linear operators & complex numbers

Re: DeepMind: A Generalist Agent

#185
post #182

(Former AI researcher / founder here) It always surprises me at the ease at which people jump on a) imminent AGI and b) human extinction in the face of AGI. Would love for someone to correct me / add information here to the contrary. Generalist here just refers to a "multi-faceted agent" vs "General" like AGI. For a) - I see 2 main blockers, 1) A way to build second/third order reasoning systems that rely on intuitio…

It remains to be asked, just why this causal, counterfactual, logical reasoning cannot emerge in a sufficiently scaled-up model trained on a sufficiently diverse real world data?

As far as we see, the https://www.gwern.net/Scaling-hypothesis continues to hold, and critics have to move their goalposts every year or two.

Re: DeepMind: A Generalist Agent

#186
post #115

Before you visualize a straight path between "a bag of cool ML tricks" and "general AI", try to imagine superintelligence but without consciousness. You might then realize that there is no obvious mechanism which requires the two to appear or evolve together. It's a curious concept, well illustrated in the novel Blindsight by Peter Watts. I won't spoil anything here but I'll highly recommend the book.

I don't think it's necessarily about consciousness per se, but rather about emotions or "irrationality".

Life has no purpose so clearly there is no rational reason to continue living/existing. A super-rational agent must know this.

I think that intelligence and emotions, in particular fear of death or desire to continue living, must evolve in parallel.

Re: DeepMind: A Generalist Agent

#187
post #115

Before you visualize a straight path between "a bag of cool ML tricks" and "general AI", try to imagine superintelligence but without consciousness. You might then realize that there is no obvious mechanism which requires the two to appear or evolve together. It's a curious concept, well illustrated in the novel Blindsight by Peter Watts. I won't spoil anything here but I'll highly recommend the book.

>"try to imagine superintelligence but without consciousness."

The only thing that comes to mind is how many different things come to mind to people when the term "superintelligence" is used.

The thing about this imagination process, however, is that what people produce is a "bag of capacities" without a clear means to implement those capacities. Those capacities would be "beyond human" but in what direction probably depends on the last movie someone watched or something similarly arbitrary 'cause it certainly doesn't depend on their knowledge of a machine that could be "superintelligent", 'cause none of us have such knowledge (even if this machine could go to "superintelligence", even our deepmind researchers don't know the path now 'cause these are being constructed as a huge collection of heuristics and what happens "under the hood" is mysterious to even the drivers here).

Notably, a lot of imagined "superintelligences" can supposedly predict or control X, Y or Z thing in reality. The problem with such hypotheticals is that various things may not be much more easily predictable by an "intelligence" than by us simply because such prediction involves imperfect information.

And that's not even touch how many things go by the name "consciousness".

Re: DeepMind: A Generalist Agent

#188

Earlier quoted context omitted.

> Or is HN mostly happy with deprecating humanity because our replacement has more teraflops? If we manage to make a 'better' replacement for ourselves, is it actually a bad thing? Our cousin's on the hominoid family tree are all extinct, yet we don't consider that a mistake. AI made by us could well make us extinct. Is that a bad thing?

Your comment summarizes what I worry might be a more widespread opinion than I expected. If you think that human extinction is a fair price to pay for creating a supercomputer, then our value systems are so incompatible that I really don't know what to say. I guess I wouldn't have been so angry about any of this before I had children, but now I'm very much in favor of prolonged human existence.

> I'm very much in favor of prolonged human existence.

Serious question - why?

Re: DeepMind: A Generalist Agent

#189
post #5

I’m not sure how to word my excitement about the progress we see in AI research in the last years. If you haven’t read it, give Tim Urbans classic piece a slice of your attention: https://waitbutwhy.com/2015/01/artificial-intelligence-revol... It’s a very entertaining read from a couple of years ago (I think I’ve read it in 2017), and man, have things happened in the field since then. If feels like things truly start…

Excitement alone won't help us.

We should ask our compute overlords to perform their experiments in as open environment as possible, just because we, the public, should have the power to oversee the exact direction this AI revolution is taking us.

If you think about it, AI safetyism is a red herring compared to a very real scenario of powerful AGIs working safely as intended, just not in our common interest.

The safety of AGI owners' mindset seems like a more pressing concern compared to a hypothetical unsafety of a pile of tensors knit together via gradient descent over internet pictures.

Re: DeepMind: A Generalist Agent

#190
post #80

Earlier quoted context omitted.

Agreed, I think if they were to drop the real-time constraint for the sake of the robotics tasks, they could train a huge model with the lessons from PaLM and Chincilla and probably slam dunk the weakly general AI benchmark.

I'm in the camp that thinks we're headed in a perpendicular direction and won't ever get to human levels of AGI with current efforts based on the simple idea that the basic tooling is wrong from first principles. I mean, most of the "progress" in AI has been due to getting better and learning how to understand a single piece of technology: neural networks. A lot of recent neuroscience findings have shown that human b…

HN madlibs:

  I'm in the camp that thinks we're headed in a perpendicular direction and won't ever achieve powered flight with current efforts based on the simple idea that the basic tooling is wrong from first principles. I mean, most of the "progress" in flight has been due to getting better and learning how to understand a single piece of technology: fixed wing aircraft.

  A lot of recent powered flight findings have shown that real birds _don't_ just use fixed wings; in fact, they flap their wings! Until we start thinking from the ground up how to build and engineer systems that reflect the bird wing, we're essentially wandering around in the dark with perhaps only a piece of what we _think_ is needed for powered flight. (I'm not saying the bird wing is the best engineered thing for powered flight either, but I'm saying it's one of the best examples we have to model powered flight after and that notion has largely been ignored)

  I generally think it's hubris to spit in the face of 4 billion years of evolution thinking that some crafty fixed wing aircraft with X number more wingspan and horsepower will emerge magically as truly capable of powered flight - it will be a strange abomination at best.
to be slightly less piquant:

A) Machine learning hasn't been focused on simple neural nets for quite some time.

B) There's no reason to believe that the organizational patterns that produce one general intelligence are the only ones capable of doing that. In fact it's almost certainly not the case.

By slowly iterating and using the best work and discarding the rest, we're essentially hyper-evolving our technology in the same way that natural selection does. It seems inevitable that we'll arrive at least at a convergent evolution of general intelligence, in a tiny fraction of the time it took on the first go-around!

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