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AI is mostly about curve fitting (2018)

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Re: AI is mostly about curve fitting (2018)

#62
post #33

"Machine learning" used to be a safe haven. You could flee there to escape the Terminators and brain-on-a-chip graphics. Business PR deliberately killed that. They wanted their ML algorithms to be refered to as AI, so they could fully ride the hype train. AI used to be a tight quirky community. Having the brain as inspiration led to all sorts of anthropomorphizing. This was ok. Researchers understood what was meant w…

Honest question, aren’t the consequences for “real” researchers keeping their heads down quite severe? Won’t we have important policy decisions both public and private and billions in funding misdirected for years when they could best be put elsewhere? Sure the “real” researchers will have easier access to funding, which perhaps is a key motivating factor to not push back on the hype, but isn’t there a large opportunity cost to allowing hype and or bullshit to go unchecked because “they don’t have the time to write a book”?

Re: AI is mostly about curve fitting (2018)

#63
post #33

"Machine learning" used to be a safe haven. You could flee there to escape the Terminators and brain-on-a-chip graphics. Business PR deliberately killed that. They wanted their ML algorithms to be refered to as AI, so they could fully ride the hype train. AI used to be a tight quirky community. Having the brain as inspiration led to all sorts of anthropomorphizing. This was ok. Researchers understood what was meant w…

The scary part is that governments and politicians have fallen for the "AI as the ultimate solution to do X", and now they're in a big hurry to apply to automated weapons and other scary stuff like that, all because some people at defense contractors and don't give a f--- about the consequences as long as it gains them a few extra several billions dollars over the next few years.

Re: AI is mostly about curve fitting (2018)

#64
Thanks for the link to the J.Pearl interview , it 's very interesting. There are many counterpoints that are not examined though:

- There's nothing wrong with curve fitting per se. NNs fit hundreds of curves in parallel and many of them may contain cues about the causal structure of the data.

- Deep learning has become part of reinforcement learning, which is trying to learn a causal structure. The primary determinant of causality is the temporal order of cause and effect. The question is , do humans use other hints apart from time for causal inference?

- There is also not much evidence from neuroscience that wet brains are causality-inferrence machines, most of the evidence is that they are decision-making machines. Humans are also pretty bad at inferring causality when it's not obvious, but we re pretty good at associations/patterns.

- Reasoning (conscious) is often considered to act on a meta-level, which observes the internal action of the human brain itself and vocalizes what it sees. What the brain sees at this level is not the external world, but the representation, and we don't have evidence there is a model of the world in there (except perhaps temporary maps of space that exist in hippocampus). Assuming this is true, it s not impossible that current methods can be extended so that self-explaining an NN ends up being causal reasoning

the more important question is whether any of these methods can lead to the remarkable ability of brains to generate extremely intricate and improbable causal chains. can we get a CNN to start from a photo of maxwell's equations and output the theory of relativity? who knows

Re: AI is mostly about curve fitting (2018)

#65
The article is less awful than the title. In short, the thesis is that ML seems only able to learn associations, rather than stronger, causal models.

It should be fairly obvious that ‘curve fitting’ is a misleading category—these models are clearly learning highly meaningful latent spaces that no prior approaches ever did. But I would agree that the actual high-level ability to make causal inferences seems to be lacking.

Where I disagree with Pearl is simply with the idea that these stronger models won't emerge through future research. It's too early to say this, after barely a decade of large-scale AI research that has been undergoing continual rapid progress. Greater generality and more powerful models are some of the most well-established goals of the field.

Re: AI is mostly about curve fitting (2018)

#66
It was so refreshing to read the title of this article. This couldn’t be more true and timely. Everyone and their brother is talking about artificial intelligence and it’s frankly annoying at this point. These models are, simply put, just fancy interpolation/ extrapolation approaches.

Re: AI is mostly about curve fitting (2018)

#67

Depending on how complex a curve, and how many dimensions it is in, couldn't you argues that is essentially what our brains do as well? Not that I am defending the massive hype field that is ML today, but curve fitting is a form of intelligence.

It’s just fancy pattern matching. Multi-stage heuristics. Where it fails is data limitations. This is different from someone coming up with new insights based on different combinations of data inputs and better yet entirely new data/metrics.

Re: AI is mostly about curve fitting (2018)

#68
post #33

"Machine learning" used to be a safe haven. You could flee there to escape the Terminators and brain-on-a-chip graphics. Business PR deliberately killed that. They wanted their ML algorithms to be refered to as AI, so they could fully ride the hype train. AI used to be a tight quirky community. Having the brain as inspiration led to all sorts of anthropomorphizing. This was ok. Researchers understood what was meant w…

What’s wrong with anthropomorphizing?

I’ve noticed at least as many people under-anthropomorphize as over. People who seem obsessed with human exceptionalism and are personally offended at the idea that plants and animals (and computers!) might have subjective experiences like our own.

But to me it seems obvious we are far more alike “lower” species than we are unlike them. I would say the cases of human exceptionalism are actually extremely rare. The main source of our uniqueness is that we amalgamate other species, not that we have transcended them.

My theory is that we are terrified that we might be simpler than we think, because socially we behave as if we are so singular. If we are simple, and animals and machines are like us, then maybe we should be treating them with more reverence.

But being afraid of that is OK for a random person. For a machine learning researcher I would hope they are more careful about what we have evidence for (the similarities between us) and what we don’t (that there is some ineffable magic about humans).

Re: AI is mostly about curve fitting (2018)

#69

Depending on how complex a curve, and how many dimensions it is in, couldn't you argues that is essentially what our brains do as well? Not that I am defending the massive hype field that is ML today, but curve fitting is a form of intelligence.

I was say fundamentally no -- and Douglas Hofstadter is probably the foremost spokesperson against intelligence being curve fitting. General intelligence is primarily about developing useful conceptual categories (not mapping to existing ones) and drawing cause-and-effect inferences that assist us in achieving goals . Curve fitting is just another name for pattern recognition, mapping to previously defined categories…

By that definition the vast majority of humans do not possess general intelligence.

Re: AI is mostly about curve fitting (2018)

#70
post #38

I think intelligence has for some time already been boiled down to curve fitting, even for humans. Our current accepted definition of intelligence in schools is to get a score that is higher than the average to be considered sufficiently intelligent to proceed to the next grade. I feel anything that we develop for AI would fundamentally always be inspired by our own experiences and hence curve fitting is something we…

> Our current accepted definition of intelligence in schools is to get a score that is higher than the average

I don’t even think educators mistake that for intelligence. It’s, at best, a proxy for intelligence mixed with other factors.

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