Live data from Hacker News

Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

youtube.com

51–60 of 163 posts

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#51

I appreciate the video and generally agree with Fei-Fei but I think it almost understates how different the problem of reasoning about the physical world actually is. Most dynamics of the physical world are sparse, non-linear systems at every level of resolution. Most ways of constructing accurate models mathematically don’t actually work. LLMs, for better or worse, are pretty classic (in an algorithmic information t…

[deleted]

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#52
post #34
post #31

Earlier quoted context omitted.

Is there any research about it ? This would mean we massing some knowledge in genes and when offspring born have some knowledge of our ancestors. This would mean the weights are stored in DNA?

Horses can be blindfolded at birth and when removed do basic navigation with no time for any training. Other non-visually precocious animals like cats, if they miss a critical development period without getting natural vision data, will never develop a functioning visual system. Baby chicks can do bipedal balance pretty much as soon as they dry off. Wood ducks can visually imprint very soon after hatching and drying…

I've pondered this often, especially kangaroos where the half-developed fetus can climb up into the pouch.

Clearly we're just hardwired for certain tasks, in such a way that the function is primarily dictated by topology.

This weight agnostic neural network page[1] explores this, but obviously isn't the true answer.

[1]: https://weightagnostic.github.io/

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#53
post #50
post #33

Earlier quoted context omitted.

Hey, cool project! Do you actually pass the images to the model, or just the metadata/stats?

Thanks! This live demo uses metadata and stats only. Right now we are testing ViTs and Foundation Models as well. But quality of results from EO FMs haven't been worth the inference cost so far. Early days though. Also starting to fine tune models for specific downstream tasks ourselves.

Cool, makes sense.

Yeah, have you considered maybe looking into just running it on embeddings [1], instead of the imagery itself? Would save on most of the inference cost, at the cost of flexibility (i.e. you are locked into whatever embeddings have been created).

[1] https://developers.google.com/earth-engine/datasets/catalog/...

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#54
There are many such frontiers in AI. I was just reading that current models are apparently quite bad with temporal perception:

https://community.openai.com/t/time-awareness-in-ai-why-temp...

https://boraerbasoglu.medium.com/the-impact-of-ais-lack-of-t...

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#55
post #41
post #37

Earlier quoted context omitted.

> there is really only one usable dataset: the world itself, which cannot be compacted or fed into a computer at high speed. Why wouldn't it be? If the world is ingressed via video sensors and lidar sensor, what's the hangup in recording such input and then replaying it faster?

I think there's an implicit assumption here that interaction with the world is critical for effective learning. In that case, you're bottlenecked by the speed of the world... when learning with a single agent. One neat thing about artificial computational agents, in contrast to natural biological agents, is that they can share the same brain and share lived experience, so the "speed of reality" bottleneck is much les…

Yeah I'm envisioning putting a thousand simplistic robotic "infants" into a vast "playpen" to gather sensor data about their environment, for some (probably smaller) number of deep learning models to ingest the input and guess at output strategies (move this servo, rotate this camshaft this far in that direction, etc) and make predictions about resulting changes to input.

In principle a thousand different deep learning models could all train simultaneously on a thousand different robot experience feeds.. but not 1 to 1, but instead 1 to many.. each neural net training on data from dozens or hundreds of the robots at the same time, and different neural nets sharing those feeds for their own rounds of training.

Then of course all of the input data paired with outputs tested and further inputs as ground truth to predictions can be recorded for continued training sessions after the fact.

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#56
post #10

makes sense - humans have evolved a lot of wetware dedicated to 3D processing from stereo 2D. I've made some progress on a PoC in 3D reconstruction - detecting planes, edges, pipes from pointclouds from lidar scans, eg : https://youtu.be/-o58qe8egS4 .. and am bootstrapping with in-house gigs as I build out the product. Essentially it breaks down to a ton of matmulls, and I use a lot of tricks from pre-LLM ML .. this…

Have you tried "traditional" approaches like a Delaunay triangulation on the point cloud, and how does your method compare to that? Or did you encounter difficulties with that?

Regarding what you say of planes and compression, you can look into metric-based surface remeshing. Essentially, you estimate surface curvature (second derivatives) and use that to distort length computations, remeshing your surface to length one in that distorted space, which then yields optimal DoFs to surface approximation error. A plane (or straight line) has 0 curvature so lengths are infinite along it (hence final DoFs there minimal). There's software to do that already, thought I'm not sure it's robust to your usecase, because they've been developed for scientific computing with meshes generated from CAD (presumably smoother than your point cloud meshes).

I'd be really curious to know more about the type of workflow you're interested in, i.e. what does your input look like (do you use some open data sets as well?) and what you hope for in the end (mesh, CAD).

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#57
post #3

It's hard to describe, but it's felt like LLMs have completely sucked the entire energy out of computer vision. Like... I know CVPR still happens and there's great research that comes out of it, but almost every single job posting in ML is about LLMs to do this and that to the detriment of computer vision.

Hah! And I remember when ML itself sucked all the energy out of computer vision. Time to pay the piper.

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#58
Intelligence is not only embodied (it needs a body), it is also embedded in the environment (it needs the environment). If you want an intelligence in your computer, you need an environment in your computer first, as the substrate from which the intelligence will evolve. The more accurate the environment the better the intelligence that will be obtained. The universe is able to create intelligence and we are proof. Thus, if you want to create intelligence, you have to find a way of efficiently simulate our reality at the desired level of detail. Currently we don’t know such efficient algorithm, but one way could be finally harnessing Quantum Computing to hack the universe itself, cheat and be able to simulate our environment efficiently without even knowing the algorithm behind Quantum Physics.

Re: Fei-Fei Li: Spatial intelligence is the next frontier in AI [video]

#60
post #34
post #31

Earlier quoted context omitted.

Is there any research about it ? This would mean we massing some knowledge in genes and when offspring born have some knowledge of our ancestors. This would mean the weights are stored in DNA?

Horses can be blindfolded at birth and when removed do basic navigation with no time for any training. Other non-visually precocious animals like cats, if they miss a critical development period without getting natural vision data, will never develop a functioning visual system. Baby chicks can do bipedal balance pretty much as soon as they dry off. Wood ducks can visually imprint very soon after hatching and drying…

It's not clear whether humans have natural reactions to snakes. https://link.springer.com/article/10.11133/j.tpr.2013.63.4.0...
Post reply on HN