News for hackers. Stuff that matters.

smuser

Re:Ask HN: Could you share your personal website here? on Wednesday January 14, 2026 @04:16PM (#46623594)
https://smuser.space — portfolio and projects site
I really like using aider (https://aider.chat) and heavily leverage the /ask command to have a quick chat on intent and context before prompting it for the code I need.
Re:Visual Q-Learning Demo in JavaScript from Karpathy (2013) on Saturday November 25, 2023 @01:52PM (#38415563)
My understanding (not an expert) is a lot of problem domains have very sparse / infrequent rewards - imagine if the only reward you gave a minecraft agent was when it mined a diamond, it would take a lot of gameplay for it to randomly do that and get a reward. So researchers spend time tuning the reward space (oh you mined some dirt, here's a tiny reward. Oh you mined rock, a greater reward, etc) but it's kind of akin to hand crafted feature detection from the pre-neural network days. The Q* mystery is did OpenAI 'solve' reward modelling the same way neural networks solved feature detection.
Re:XB-1's wings are officially closed out on Friday April 17, 2020 @04:37PM (#22902740)
I believe it's "eXperimental Boom - 1" but I doubt they mind the coincidence.
Re:Grab your crayons, it’s coloring time on Sunday March 29, 2020 @10:17PM (#22724614)
Yeah this is a great idea for kids stuck inside! On a related note my friend made free coloring pages for two of her artworks: https://www.gopaintthewild.com/coloringpages
Probably worth considering the efficiency of converting that stored energy to useful work. Average ICE efficiency is ~20% yielding effective storage of ~2600 Wh/kg.

Roughly an "order of magnitude" more density.

EDIT: Hadn't refreshed the page since lunch. Many have made this point already. Apologies haha

Yupp relevant bit from there:

Internet traffic via a geostationary satellite has a minimum theoretical round-trip latency of at least 477 ms (between user and ground gateway), but in practice, current satellites have latencies of 600 ms or more. Starlink satellites would orbit at 1⁄30 to 1⁄105 of the height of geostationary orbits, and thus offer more practical Earth-to-sat latencies of around 25 to 35 ms, comparable to existing cable and fiber networks[51] (although transmitting a signal halfway around the globe takes at least 67 ms at the speed of light).

Re:Building Fast Interpreters in Rust on Monday March 04, 2019 @12:58PM (#19303471)
I think he means have a different thread for each case or a subset of cases instead of having any explicit switch statement.
Re:SpaceX Launches 19th Rocket in a Year, a Company Record on Monday December 03, 2018 @03:47PM (#18592806)
This is essentially what Spire is doing. Their weather processing facility is here in Boulder.

https://spire.com/