jethkl

11 ms·

1.
by jethkl 2mo ago
I generally agree, though direction, intuition, and domain knowledge are still relevant. Your breadth-first-search framing feels right, but you still need a sense of which paths are worth following, and you need to know when to trust the re
2.
by jethkl 5mo ago
> if you tell me someone just stumbles onto and old coin... I found a bill from the Weimar hyperinflation era. Its face value was several billion (Milliarden). Its only value was as a curiosity.
3.
by jethkl 6mo ago
> I don't think his Usonian concepts have had much impact on society. The word Usonain has vanished, but the style's influence has not. > In 2024, I spent $750,000 on a 1200 sqft rancher built in 1962. The Jacobs First House
4.
by jethkl 1y ago
Wasserstein distance (Earth Mover’s Distance) measures how far apart two distributions are — the ‘work’ needed to reshape one pile of dirt into another. The concept extends to multiple distributions via a linear program, which under mild co
5.
by jethkl 1y ago
There is an analogue of the CLT for extreme values. The Fisher–Tippett–Gnedenko theorem is the extreme-values analogue of the CLT: if the properly normalized maximum of an i.i.d. sample converges, it must be Gumbel, Fréchet, or Weibull—unif
6.
by jethkl 1y ago
> Are they financially screwed I’ll share an anecdote I witnessed in my extended family–it was horrible. When US Air went bankrupt, employees with decades of service, expecting high five-figure to low six-figure annual income, learned th
7.
by jethkl 1y ago
This is an instance where Conway's Law applies: state and county systems were kept separate so that maintenance and repairs crews wouldn’t accidentally duplicate work. https://en.wikipedia.org/wiki/Conway%27s_law
8.
by jethkl 1y ago
There are many physical scale models of the solar system around the world, many walkable, some bikeable: https://en.wikipedia.org/wiki/Solar_System_model I've seen several, Planet Trek in Wisconsin is a good bike
9.
by jethkl 1y ago
how helpful was ai for this? The paper is light on details, but it says the agent was used to generate a kind of seed set (rank-1 bilinear products) that were then fed into the subsequent steps. Evidently this idea succeeded. Curious if any
10.
by jethkl 1y ago
My hope is that a lib like this one or similar could rally mindshare and become integrated as the new standard, and adopted by the wider developer community. In near term, it comes down to trade-offs. I see no decision that works for all u
11.
by jethkl 2y ago
you can reverse the playback, all the physics of billiards bouncing around works equally well in either time direction. > If the balls start clustered together, they will scatter over time about the box and the replay of their paths has
12.
by jethkl 2y ago
Sharing a simple thought experiment that was shared with me years ago that explains (to me at least) why this is an interesting question. Imagine a billiard ball with nonzero velocity bouncing around an enclosed box. When the ball encounter
13.
by jethkl 2y ago
I thought the article would discuss physics of flight, but it's about physics of iridescence. Cool, but not what I expected. I've seen butterflies fly in a stiff wind. It seems impossible even when you watch it. I was hoping for
14.
by jethkl 2y ago
your comment introduced me to the term permaculture, looks interesting. Do you leverage numerical optimization - linear programming or integer programming for example - in your work?
15.
by jethkl 2y ago
That's a clarifying response: I've applied (non)convex programming (LP, QP, MIP, etc) to all the above and a few more, all of which i'd classify as classical applications. Less traditional applications -- I'd like to exp
16.
by jethkl 2y ago
LPs (and MIPs) are used for scheduling, planning, and logistics. These are some of the earliest applications of LPs, dating to the 1930's and 1940's, and these applications are still relevant. The wikipedia page has a good overvi
17.
by jethkl 2y ago
Thank you! -- and thank you to the others who shared!
18.
by jethkl 2y ago
> An extremely useful law to remember.... Would you be willing to provide an example where you applied Little's Law?
19.
by jethkl 2y ago
Martin Gutmann's recent talk ( https://www.youtube.com/watch?v=b0Z9IpTVfUg ) supports your point. While Shackleton is celebrated for overcoming disaster, Admunsen reached the south pole by avoiding disaster in the fir
20.
by jethkl 2y ago
You are missing the joke. The correct line would read: isHexadecimal("HADC0FFEE"); // false
21.
by jethkl 2y ago
The engineering hall statue! Thank you for posting your comment. I thought it was an abstract sculpture trying look "engineery". But it's a realistic representation of a cultural wound, and it is a warning. https:/&#x
22.
by jethkl 2y ago
This is such a prescient analysis from over 30 years ago, and he delivers so well - extemporaneous on a white board. The only error I see is the timing of when the market opportunity for NeXT would match their product: he predicted 1993. Th
23.
The Internet traffic shadow of the eclipse (2017)(comscore.com)
5 points by jethkl 2y ago|0 comments
24.
by jethkl 2y ago
It's great to see research in this field, I know there is opportunity here, and I hope to someday benefit from progress. But I skimmed the paper, and it doesn't appear solve a problem that I have. From the practical standpoint, wh
25.
by jethkl 3y ago
One amazing feature of Lustron houses is that their enameled exterior has aged amazingly well. I live near several of them, and all of them, without exception, appear to have survived 7 decades in a harsh northern climate. The enamel appea
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by jethkl 3y ago
Better realtime data may improve actionability, and the big audience reach may influence the overall narrative. Independent measurements are extremely important to have for science and data validation. But monitoring methane has been going
27.
by jethkl 3y ago
a defense against collisions like this is through CTEs that select a minimal set of columns, with column names suitably selected and standardized: CTE_A AS (SELECT ... comment as comment_a from A...), CTE_B AS (SELECT ... comment as c
28.
by jethkl 3y ago
The article omits the "natural join". A natural join automatically joins tables on columns having the same name, and the columns in the resulting output appear exactly once. Natural joins often simplify queries, and they automati
29.
by jethkl 3y ago
the bug is the diy csv loader. use instead the csv module or its equivalent. My experience parsing csv's (how hard can it be?) often end with nested lists of iterators, complex logic to deal with edge cases, and other things that fail
30.
by jethkl 3y ago
Good question, my thoughts: 1) to apply an LP or MILP to a practical problem that a business cares about requires a rare mix: one or a small number of people to have domain knowledge, knowledge about LPs/MILPs, and a good fit to the pr

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