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robertsdionne

67 karma · joined April 28, 2016

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robertsdionne··on Abusing DuckDB-WASM by making SQL draw 3D graphics (Sort Of)
https://x.com/geocucu_t/status/1909291486367166717
robertsdionne··on Tiny Pointers
After reading more, it seems the novelty is in the two specific schemes that use these techniques to store data with high probability into tables of extremely high load factors with bounded pointer sizes, which are more complex than simple array indices due to having to resolve which fallback table is storing the key-value pair.

One scheme proves tiny pointer size bounds for fixed length tiny pointers. The other proves bounds for variable length pointers.

robertsdionne··on Tiny Pointers
How is this novel?

This is like using a fixed sharding scheme plus delta-compression for indices relative to shard addresses plus varint encoding the deltas.

robertsdionne··on Differential Transformer
It means one of these things: https://en.wikipedia.org/wiki/Simplex#Standard_simplex
robertsdionne··on Were RNNs all we needed?
These are real RNNs, they still depend upon the prior hidden state, it’s just that the gating does not. The basic RNN equation can be parallelized with parallel prefix scan algorithms.
robertsdionne··on Trump injured but ‘fine’ after attempted assassination at rally
I think I hear in this video: https://twitter.com/JordanUhl/status/1812251693888975359

"Take a look at what happened", then three initial shots, "Get down! Get down! Get down!", followed by four rapid shots, all likely from the shooter. Trump ducks after the third initial shot. They sound like "crack---boom" where the "crack" is the bullet passing the microphone and the "boom" is the gunfire arriving later due to speed of sound at distance from the shooter.

Immediately after, there is a three-round burst of automatic fire, then several seconds later there is a single silenced shot ("kill confirmed") all likely secret service.

I'd have to look at the audio waveform to distinguish whether the four rapid shots were the same shooter or return fire from secret service.

Edit: After watching this: https://twitter.com/BNONews/status/1812327502028669328

It seems like the first 3 and then next 5 (not 4) shots were from the shooter, and there was a single sniper shot returned by secret service immediately after (some echo made it sound like a 3 round burst in the first video), with the final follow up confirmation shot several seconds later.

robertsdionne··on Training of Physical Neural Networks
This is “Mortal Computation” coined in Hinton’s The Forward-Forward Algorithm: Some Preliminary Investigations https://arxiv.org/abs/2212.13345.
robertsdionne··on Ask HN: What is the best code base you ever worked on?
* https://abseil.io/resources/swe-book/html/ch16.html

* https://abseil.io/resources/swe-book/html/ch17.html

robertsdionne··on Ask HN: What is the best code base you ever worked on?
Cannot overstate.
robertsdionne··on Super Heavy has splashed down in The Gulf of Mexico
You are not riding the atmosphere down, the atmosphere is riding you.
robertsdionne··on Sphere Rendering: Flat Planets
Love the gas giant and the corresponding page: https://emildziewanowski.com/flowfields/
robertsdionne··on Sphere Rendering: Flat Planets
https://en.wikipedia.org/wiki/Peirce_quincuncial_projection
robertsdionne··on Prolly Trees
Also the rolling hash is only on map keys, so replacing fixed-size values requires no splits.
robertsdionne··on Motion blur all the way down (2022)
I think the best implementation (without eye-tracking) would not motion-blur the entire scene when the player moves themselves (ego-motion-blur) but would blur moving objects. However, if the player's view motion happens to coincide with the motion of objects in the scene, for instance if the player is tracking the object (maybe another player so they can shoot it in an FPS) then the object-motion-blur should be reduced according to the degree of tracking. I'm sure some game engines already do this.
robertsdionne··on Motion blur all the way down (2022)
The point is that ego-motion-blur is dumb. (It can also make players motion-sick.)

You say it yourself: "your brain compensates for saccades by censoring input for a while. And it has built-in motion stabilization which allows you to read a sign while walking down the street."

robertsdionne··on Sieve is simpler than LRU
I wonder about allowing the hand to 1-D random walk left or right when examining the visited bit for evicting an item.
robertsdionne··on What is the index of an empty string in an empty string?
The string of all strings that don’t contain themselves as substrings.
robertsdionne··on Show HN: Visualize rotating objects from the 4th, 5th, nth dimensions
Related, but still 3D, these are non-euclidean 3d geometries: https://3-dimensional.space/

I like the S3 geometry, which is essentially floating around on the 3d-surface of a 4d ball, also described here: https://www.mathinees-lacaniennes.net/images/stories/article...

robertsdionne··on AI system self-organises to develop features of brains of complex organisms
https://x.com/tegmark/status/1658438666182688768?s=46
robertsdionne··on Non-Euclidean Geometry Online: A Guide to Resources (2008)
related resource: https://www.3-dimensional.space/
robertsdionne··on Multimodal Neurons in Pretrained Text-Only Transformers
ppl arguing about who owns which words
robertsdionne··on Absolute Unit NNs: Regression-Based MLPs for Everything
Kind of the inverse of index learning:

https://web.archive.org/web/20150301013541/https://warwick.a...

robertsdionne··on 'Scary moment' as orcas disrupt ocean boat race
I think you'd rather use glitter.
robertsdionne··on What to do if your house is overflowing with books
What worked for me recently was to divide the books into several categories:

* Books I want to fully read soon.

* Books I can't see myself fully reading, which subdivides into:

* Books I want to keep as references.

* Books I can't see myself ever reading or needing to refer to.

Get rid of everything in the last category. Repeat this process once a year.

robertsdionne··on Buy well, buy once
fcuk crocs
robertsdionne··on Twitter applies 7-day suspension to half a dozen journalists
Maybe they were live-location-tracking
robertsdionne··on Are we in a baby universe that looks like a black hole to outside observers?
Wouldn’t this imply a shrinking/inflating equivalence principle? Matter inside parent black hole in parent universe 1 is shrinking from perspective of universe 1, but space is expanding from perspective of inside parent black hole in child universe 2.
robertsdionne··on Building arbitrary Life patterns in 15 gliders
It's like how a Turing machine tape can be represented by two natural numbers (or even a single natural number via interleaving).
robertsdionne··on Building arbitrary Life patterns in 15 gliders
Also "Lenia": https://en.wikipedia.org/wiki/Lenia https://www.youtube.com/watch?v=HT49wpyux-k
robertsdionne··on Google is shutting down Stadia
St(r)eam.
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