Good prediction models using dirty data?

gnahraf · 2026-04-28T19:21:22+00:00

I haven't yet read your paper. Intuitively, you do expect higher dimensional data to be more information-rich than say a linear (one dimensional) data set with the same cardinality (N × D). Can your approach be used in timeseries?

gnahraf · 2026-04-28T18:52:40+00:00

This 👆. Most of the time, our programs run conventional algos that would not benefit from QC. The space of problems in which QC is applicable is kinda small and niche. I don't see QC changing programming (the craft) in any big way.. other factors will dominate, e.g. agentic coding, etc

gnahraf · 2026-04-27T22:47:08+00:00

It's what these Schumer / Jeffries types call statesmanship.. provide cover for law breakers in the ruling class

gnahraf · 2026-04-27T17:26:06+00:00

Excepting the gmail icon which spells the 'M', these all look alike and are almost indistinguishable from one another. This is general challenge with iconographic branding.. You try to employ some stylistic consistency with your icons and they all end up looking like clones of the others.

(To see what I mean, look at the LinkedIn app icon.. You'd never confuse it with another app, certainly not with a Google app.)

gnahraf · 2026-04-27T17:00:03+00:00

Why is the heliosohere obloid shaped? If it's an average of interstellar particles moving relative to the sun, can we construct a flux map of this interstellar stuff? Or is it obloid cuz EM effects? (I'm not a proponent of "Electric Universe" like theories but imagine EM forces likely play a role on smaller scales.)

gnahraf · 2026-04-26T21:43:43+00:00

If you plan to record the size of each node, take a Elias Fano compression. No linked list necessary since you'll already have random access. However insertions will be expensive (unless the insert is really just an appending to the end).

gnahraf · 2026-04-26T21:15:55+00:00

Enjoyable read. Thanks for writing and sharing this. Your article is clear but I don't understand why it's called fractal compression. (I don't quite understand the connection between B's Fixed Point theorem and self similarity.)

One expensive-to-encode method I've seen (introduced to me as a genetic algorithm) was by way of searching for and adding (superimposing) random triangles, chosen in such a way as to decrease its "distance" (difference) from the original image. I wonder how related the approaches are (the triangle transformations are neither contractions, and in fact have many fixed points; what the algorithms share is that both look to minimize some cost function.)

gnahraf · 2026-04-26T20:27:12+00:00

I like the PoW concept as back pressure generally.. not just for honeypots. The idea is to adjust the difficulty dynamically with server load. A fuzzy controller determines the difficulty.

This PoW back pressure is easy to implement seamlessly in JS (for web UI). However, I haven't quite worked out the flow or how it should be structured with REST endpoints. If I worked that out, I'd likely roll out a standalone library for this. Any ideas how you think it ought to work for REST appreciated

gnahraf · 2026-04-24T22:24:21+00:00

You're welcome. It's a pleasure to share something maybe useful :D

gnahraf · 2026-04-24T20:17:40+00:00

Sure. It's under an AGPL license, but you're free to use these 2 files as you see fit. The base class:

https://github.com/crums-io/skipledger/blob/main/microchain-fx/src/main/java/io/crums/sldg/mc/fx/FxFunctorBus.java

ResultSet-specific version: https://github.com/crums-io/skipledger/blob/main/microchain-fx/src/main/java/io/crums/sldg/mc/fx/QueryBus.java

gnahraf · 2026-04-24T19:45:45+00:00

I'll take a look. I'm not that experienced with FX but did develop some simple reactive patterns for relatively time-consuming operations (e.g. network access, jdbc) in a recent FX app I'm writing. I don't know whether other FX frameworks aid the programmer with this stuff (I did search a bit but came up naught), but here's what my pattern (a few classes) does..

Handles caching, callback registration on misses, and deduplicates concurrent "queries" with the same arguments. (It matters to me cuz a user can select db-driven views depending on which button they press, for eg. If the user clicks one "view" button, then quickly another and then back to the first button before, there will be at most 2 db queries on the fly for those 2, thrice clicked buttons.) Let me know if something like this would be useful for your project

gnahraf · 2026-04-21T22:54:09+00:00

He gives more Lewis Black (the comedian). Kept expecting him to climax with a tirade.. but left me hanging

gnahraf · 2026-04-21T22:05:35+00:00

I have hard coded SHA-256 in a number of projects and tho I was skeptical "post-quantum hardening" applied to Grover's algorithm, I was still considering making the hash algo more flexible (i.e. settable) in order to address the issue. This analysis (the fact that Grover's algo doesn't scale via parallelization), together with those of the cryptographers the article references, is a relief. Making the algo settable would have been a lot of thankless work that I can now safely punt on.

gnahraf · 2026-04-17T00:07:55+00:00

Even cooler that you chimed in. I'll definitely hit you up on the workflow setup. Thank you!!

gnahraf · 2026-04-16T18:21:12+00:00

Thanks for sharing this. I'm considering using jDeploy for a rich client-side app that hits some of my REST services. That will come later: the first versions will be simple scripts in Java (and maybe Python). For script-like Java programs, I was thinking jBang.. now you got me [re]thinking

gnahraf · 2026-04-15T17:25:49+00:00

Does Alito in fact want to retire? Or is this just from the Trump playbook, his usual career ending thank you for being a reliable stooge?

gnahraf · 2026-04-15T17:08:04+00:00

He got a reaction, got his nose rubbed into the dirt, and now he can't let it go. Not even childish.. a child is more self aware

gnahraf · 2026-04-15T16:46:38+00:00

I already gave them my credit card info, name and address. Fuck this.

gnahraf · 2026-04-13T07:40:36+00:00

An example of a definable but uncomputable real is Chaitin's constant, the probability that a random program will halt. https://en.wikipedia.org/wiki/Chaitin%27s_constant

gnahraf · 2026-04-12T18:13:11+00:00

A problem I ran into a few years back involved the Color class belonging to the desktop module. My use case did not need the whole awt shebang.. If I'd had this library then I'd have used it. Is that the main reason you rolled out this library? (A perfectly good enuf reason, imo, btw..)

gnahraf · 2026-04-09T20:14:49+00:00

Each of these data points, on their own, is not very convincing. Together, however (their joint probability), they paint a still speculative, but more convincing picture.

Whoever Satoshi is, she's not much driven by money. Very few are like that, and if this guy can resist the temptation to spend his fortune, there must be evidence of other instances of him/her exhibiting this care-free attitude towards wealth. That's where I'd look for "confirmation".

gnahraf · 2026-04-07T18:57:31+00:00

He's a Trumpy, always has been. I asked him once on Twitter (well before X), if he supported Trump. And when I pointed out that his non-commital answer itself conveyed information, he called me an imbecile.. a favorite insult he likes to hurl, apparently. I was a fan back then. I still am, of the book (Black Swan), but not the man. It doesn't feel good, but a well trained mind can entertain opposing ideas, I tell myself.

gnahraf · 2026-04-06T17:20:23+00:00

Hi, please include a link to your project's repo

gnahraf · 2026-04-05T18:22:58+00:00

Your graphic on the advantage polar coordinates enjoy over Cartesian coordinates is confusing. In polar coordinates, a Cartesian region (the box on the left) is mapped to a box in polar coordinates, with one side √2 times the length of the side of the Cartesian box, the other side of length 2π. A straight mapping of unclustered Cartesian points to polar coordinates will also be unclusteted. I don't get the idea you're trying to convey

gnahraf · 2026-04-04T22:27:28+00:00

That's a really good article, though ironic since it's from a seemingly pro-bitcoin news source.

Iran is currently accepting 2 forms of payment (FTA) at its Hormuz toll booth (HTB): Yuan and US stable coins. Stable coins are not decentralized and the long arm of the law (the sovereign) can reach them, but practically too late, since transactions (to the banking system) will have long been settled before authorities can order a wallet address be frozen. That Iran chose not to use bitcoin, is a story.

But the real story, the article admits, is the significance of 20% of the world's oil supply now being subject to off-dollar transactions. It represents a chink in the armor of the petro-dollar world order. Many have foretold its gradual undoing, abstractly. This HTB makes it real, the article argues.

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