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deckar01

2,486 karma · joined March 22, 2013

[ my public key: https://keybase.io/mrj; my proof: https://keybase.io/mrj/sigs/Vp2XEXm2xyjDfxnXPY_XpgK0AGsQPKltYPL-LGPle9w ]
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deckar01··on Most ints are not floats
https://gist.github.com/deckar01/f77d98550eaf5d9b3a954eb0343...

Here is a visualization I made recently on the density of float32. It seems that float32 is basically just PCM, which was a lossy audio compression exploiting the fact that human hearing has logarithmic sensitivity. I’m not sure why they needed the mantissa though. If you give all 31 bits to the exponent, then normalize it to +/-2^7, you get a continuous version of the same function.

deckar01··on A Formal Mathematical Investigation on the Validity of Kellogg's Glaze Claims
Once you assume crunching, the glaze metric should probably be measured as volume rather than surface area, because it is a solid frosting with thickness. Assuming the unit sphere, a basic torus like R=2r with equal volume, and any glaze thickness (<=r), the sphere does provide more glaze volume.
deckar01··on When flat rate movers won't answer your calls
You have to serve their registered agent in a way that satisfies a judge. I tried to sue a company whose registered agent was a high profile attorney. I paid multiple people to serve him, but every time it got back to the judge his office had somehow tricked the service officer into accepting the summons in a way the judge deemed invalid. I had to give up because service fees were approaching a significant chunk of the claim and you can’t recoup that in OK…
deckar01··on Meta got caught gaming AI benchmarks
The top of that leaderboard is filled with closed weight experimental models.
deckar01··on Tell HN: Announcing tomhow as a public moderator
I believe the standard for annotating the utterance of deities is red text.
deckar01··on A deliberate practice app for guitar players who want to level up
I really wanted to like Rocksmith, but the progressive difficulty didn’t feel quite right. I would get stuck on new chords, try the recommended arcade games, get stuck on those even harder and less satisfying tasks, then lose motivation. By the time I picked it back up it didn’t respond to the fact that my skills had regressed and I had to start a new profile. I spent more time noodling in the tone modeler than anything.
deckar01··on How each pillar of the First Amendment is under attack
Republicans and independents indicated in polls that they did not take what Trump said during the 2024 campaign literally. Voters didn’t give him a mandate, they thought they were voting for a troll.

https://www.dataforprogress.org/blog/2024/10/22/many-voters-...

deckar01··on Trump's Police Are Now Disappearing Students for Their Op-Eds
> Friends and colleagues of Ms Öztürk said she was not closely involved in pro-Palestinian protests that broke out on campuses last spring. They said her only activism was co-authoring the Tufts op-ed.

https://amp.abc.net.au/article/105107664

deckar01··on The Church FAQ
https://thechurchstudio.com/about/
deckar01··on Analysis of 2024 election results in Clark County indicates manipulation
Edit: Mail voting is not more distributed. You can’t analyze the distribution of a set that small using its min and max, it has to be the full range like the other sets. Distribution approaches zero as bin size increases regardless of voting source. This no longer seems surprising.
deckar01··on Analysis of 2024 election results in Clark County indicates manipulation
I was able to reproduce the vote skew / batch size correlation in early voting. The average batch size for mail voting was way higher (6 machines) and election day was lower (3x machines). The fact that the vote ratio is more distributed for mail voting with way more votes per machine is what highlights incongruity for me. Stats are not always intuitive though.
deckar01··on We got hit by an alarmingly well-prepared phish spammer
I thought our unauthenticated SMTP got shutoff after switching to Office 365. I looped over the SMTP servers in the hop list in the headers of an email and one of the Microsoft domains accepted unauthenticated requests from within the network.
deckar01··on The Ribbon Microphone
I think people get too hung up on the natural frequency response of mics. A ribbon mic can achieve such a low noise floor with high sensitivity that high gain EQ stays clean.
deckar01··on The Ribbon Microphone
They don’t have any EMI shielding? I use an aluminum pedal box, cut holes, and screen them with fine steel mesh. The XLR terminal grounds the mic, cable, and transformer together. These should have such a low noise floor they can pick up LF signals like train tracks and subwoofers rumbling off in the distance.
deckar01··on GitHub introduces sub-issues, issue types and advanced search
Doesn’t unwatching a repo limit notifications to mentions and participated threads?
deckar01··on Autodesk deletes old forum posts suddenly
https://www.autodesk.com/products/fusion-360/blog/october-20....
deckar01··on Autodesk deletes old forum posts suddenly
Fusion turned a corner recently imo. They added the ability to reference driven dimensions in formulas, which makes fully parametric designs trivial. I seem to never get hung calculations or crashes anymore.
deckar01··on Autodesk deletes old forum posts suddenly
It needed curation pretty bad. There is no shortage of people who ask and answer questions. The relevant knowledge will resurface as needed. I just hope they manage outdated information better in the future.
deckar01··on AI model for near-instant image creation on consumer-grade hardware
I had the same issue, so I pulled in the SDXL refiner. Night and day better even at one step.

https://gist.github.com/deckar01/7a8bbda3554d5e7dd6b31618536...

deckar01··on National Security Just Called, They Can't See the Email Traffic
https://web.archive.org/web/20240102061501/https://chronicle...
deckar01··on PSA: Don't use iPhone Mirroring on your work computer
There also seems to be a bug in the VPN that requires sending all traffic when the VPN address is on a different subnet. It should be possible to manually specify subnet mask, but it seems to be ignored. I’m not sure if the VPN is advertising this incorrectly, but it worked fine before upgrading.
deckar01··on IRS Direct File adds 12 additional states, covers more tax situations in 2025
“Free Fillable Forms” is the official IRS system for doing it manually online (no form or income limits). I even messed up my return last year and it got kicked out within an hour of upload with instructions on how to fix it.
deckar01··on General OCR Theory: Towards OCR-2.0 via a Unified End-to-End Model
I ran the demo on their own paper and it went off the rails on page 7. I’m not sure if it is related to the nearby LaTeX or if it is some token limit.
deckar01··on Fixing a bug in Google Chrome as a first-time contributor
> one thing that I was completely unsure about was how to add tests for this fix.

Similar to blaming the file for maintainers, the diff of those commits can direct you to their tests. The full patches that those commits belong to can also be useful for finding undocumented habits that have lead to approval.

https://stackoverflow.com/a/30998048

deckar01··on MVSplat: Efficient 3D Gaussian Splatting from Sparse Multi-View Images
Photography. A small cheap camera array could produce higher resolution, alternate angles, and arbitrary lens parameters that would otherwise require expensive or impossible lenses. Then you can render an array of angles for holographic displays.
deckar01··on Open-source tool translates and dubs videos into other languages using AI
https://github.com/facebookresearch/demucs

If you can train an instrument model on laugh tracks Demucs should do that.

deckar01··on Shape of Motion: 4D Reconstruction from a Single Video
Lytro added 2 spatial dimensions of info to 2D image capture: the angles the light was traveling at when it entered the camera. They could simulate the image with different camera parameters, which was good for changing depth of field after the fact, but the occlusion information was limited by the diameter of the aperture. They tried to make depth maps, but that extra data was not a silver bullet. As far as I could tell, they were still fundamentally COLMAPing, they just had extra hints to guess with.
deckar01··on Show HN: Magic-cli – A copilot for your command line
It isn’t streaming the ollama output so it feels slow (~3 words/second on a 3090 with the defaults). Using ollama directly streams within a second and you can kill it early. I don’t understand the UX of looping responses to the same question either. This does not feel like magic.
deckar01··on Diff-pdf: tool to visually compare two PDFs
I wrote a pixel-based visual diffing algorithm long ago that was intended for a CI tool that finds all of the UI changes in a PR. I broke the layout of a page I didn’t even know existed as an intern at Inkling and have had this idea in my head ever since.

https://github.com/deckar01/narcis

deckar01··on Why we no longer use LangChain for building our AI agents
I recently unwrapped linktransformer to get access to some intermediate calculations and realized it was a pretty thin wrapper around SentenceTransformer and DBScan. It would have taken me so much longer to get similar results without copying their defaults and IO flow. It’s easy to take for granted code you didn’t have to develop from scratch. It would be interesting if there was a tool that inlined dependency calls and shook out unvisited branches automatically.
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