<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: dguest</title><link>https://news.ycombinator.com/user?id=dguest</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Mon, 06 Apr 2026 07:36:27 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=dguest" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by dguest in "Artemis II Launch Day Updates"]]></title><description><![CDATA[
<p>Get nervous in 10 days, they won't need a heat shield until reentry.</p>
]]></description><pubDate>Wed, 01 Apr 2026 20:25:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=47606082</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47606082</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47606082</guid></item><item><title><![CDATA[New comment by dguest in "Ukrainian drone holds position for 6 weeks"]]></title><description><![CDATA[
<p>If only wars would end when all the soldiers on one side were dead.<p>If the people fought before they'll keep fighting, even after their robots are gone.</p>
]]></description><pubDate>Wed, 01 Apr 2026 20:05:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=47605846</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47605846</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47605846</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses ultra-compact AI models on FPGAs for real-time LHC data filtering"]]></title><description><![CDATA[
<p>For better or worse the people working on this don't really use perplexity or accuracy to evaluate models. The target is whatever you'd get for those metrics if you used the discriminants that were provided in the dataset (i.e. the GN2v01 values).<p>As for why accuracy and perplexity aren't reported: the experiments generally choose a threshold to consider something a "b-hadron" (basically picking a point along the ROC curve) and quantify the TPR and FPR at that point. There are reasons for this, mostly that picking a standard point lets them verify that the simulation actually reflects data. See, for example, the FPR [1] and TPR [2] "calibrations".<p>It's a good point, though, the physicists should probably try harder to report standard metrics that the rest of the ML community uses.<p>[1]: <a href="https://arxiv.org/pdf/2301.06319" rel="nofollow">https://arxiv.org/pdf/2301.06319</a><p>[2]: <a href="https://arxiv.org/abs/1907.05120" rel="nofollow">https://arxiv.org/abs/1907.05120</a></p>
]]></description><pubDate>Sun, 29 Mar 2026 17:14:09 +0000</pubDate><link>https://news.ycombinator.com/item?id=47565069</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47565069</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47565069</guid></item><item><title><![CDATA[New comment by dguest in "App that shows real-time lightning on Earth is showing bombings in Middle East"]]></title><description><![CDATA[
<p>Yeah, check out the service that www.windy.com uses:<p><a href="https://www.nowcast.de/en/" rel="nofollow">https://www.nowcast.de/en/</a><p>it's an array of VLF/LF radio antenna.</p>
]]></description><pubDate>Sun, 29 Mar 2026 16:56:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=47564888</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47564888</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47564888</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses ultra-compact AI models on FPGAs for real-time LHC data filtering"]]></title><description><![CDATA[
<p>You could argue that that's what CERN <i>should</i> be.<p>Everyone needs to agree on a place to put the LHC, and a lot of the accelerator team is on sight and probably should be payed by CERN, but they have a clear set of KPIs for that: they need to get the machine up to design energy and luminosity and hold it there. The CERN accelerator and civil engineering teams are pretty impressive and have mostly done their job.<p>The rest of the scientific community can (and does) organize into pseudo-autonomous collaborations that draft proposals for what to do with the real-estate around the collision points and beam dumps. The vast majority of these people don't work for CERN.</p>
]]></description><pubDate>Sun, 29 Mar 2026 16:40:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=47564735</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47564735</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47564735</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses tiny AI models burned into silicon for real-time LHC data filtering"]]></title><description><![CDATA[
<p>While you are at it:<p>> To meet these extreme requirements, CERN has deliberately moved away from conventional GPU or TPU-based artificial intelligence architectures.<p>This isn't quite right either: CERN is using more GPUs than ever. The data processing has quite a few steps and physicists are more than happy to just buy COTS GPUs and CPUs when they work.</p>
]]></description><pubDate>Sat, 28 Mar 2026 16:07:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=47555862</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47555862</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47555862</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses ultra-compact AI models on FPGAs for real-time LHC data filtering"]]></title><description><![CDATA[
<p>CERN doesn't build everything CERN uses:<p>- FPAGs like this one are generally COTS.<p>- All the experiments use GPUs which come straight from the vendors.<p>- Most of the computing isn't even on site, it's distributed around the world in various computing centers. Yes they also overflow into cloud computing but various publicly funded datacenters tend to be cheaper (or effectively "free" because they were allocated to CERN experiments).<p>Some very specific elements (those in the detector) need to be radiation hard and need O(microsecond) latency. These custom electronics are built all over the world by contributing national labs and universities.<p>CERN builds a bit.</p>
]]></description><pubDate>Sat, 28 Mar 2026 16:00:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=47555786</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47555786</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47555786</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses tiny AI models burned into silicon for real-time LHC data filtering"]]></title><description><![CDATA[
<p>Because every principle investigator in academia works in sales.<p>Some tried to hold out and keep calling it "ML" or just "neural networks" but eventually their colleagues start asking them why they aren't doing any AI research like the other people they read about. For a while some would say "I just say AI for the grant proposals", but it's hard to avoid buzzwords when you're writing it 3 times a day I guess.<p>Although note that the paper doesn't say "AI". The buzzword there is "anomaly detection" which is even weirder: somehow in collider physics it's now the preferred word for "autoencoder", even though the experiments have always thrown out 99.998% of their data with "classical" algorithms.</p>
]]></description><pubDate>Sat, 28 Mar 2026 15:46:58 +0000</pubDate><link>https://news.ycombinator.com/item?id=47555653</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47555653</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47555653</guid></item><item><title><![CDATA[New comment by dguest in "CERN uses ultra-compact AI models on FPGAs for real-time LHC data filtering"]]></title><description><![CDATA[
<p>The LHC has moved on a bit since then. Here's an open dataset that one collaboration used to train a transformer:<p><a href="https://opendata-qa.cern.ch/record/93940" rel="nofollow">https://opendata-qa.cern.ch/record/93940</a><p>if you can beat it with linear regression we'd be happy to know.</p>
]]></description><pubDate>Sat, 28 Mar 2026 15:05:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=47555240</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47555240</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47555240</guid></item><item><title><![CDATA[New comment by dguest in "Passengers who refuse to use headphones can now be kicked off United flights"]]></title><description><![CDATA[
<p>I made it too fun: what I said was at best an over-genarlization. The actual rules [1] apply to acrobatics and say that parachutes are required <i>for everyone</i> when non-crew passenger is on the plane:<p><pre><code>    Unless each occupant of the aircraft is wearing an approved parachute, no pilot of a civil aircraft carrying any person (other than a crewmember) may execute any intentional [acrobatic] maneuver...
</code></pre>
So without the passenger no one needs a parachute, with them everyone does.<p>It's perfectly legal for a 787 to carry a few parachutes just for the full-volume passengers.<p>[1]: <a href="https://faraim.org/faa/far/cfr/title-14/part-91/section-91.307.html" rel="nofollow">https://faraim.org/faa/far/cfr/title-14/part-91/section-91.3...</a></p>
]]></description><pubDate>Sun, 22 Mar 2026 08:47:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=47475624</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47475624</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47475624</guid></item><item><title><![CDATA[New comment by dguest in "Passengers who refuse to use headphones can now be kicked off United flights"]]></title><description><![CDATA[
<p>FUN FACT: Aviation rules require that any plane carrying a parachute must have at least one for every person on board. Hopefully the reason is obvious.<p>Now given that, do you really want to pay the extra cost of flying with 300 parachutes just so mr-full-volume-phone can have one?</p>
]]></description><pubDate>Sat, 21 Mar 2026 19:09:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=47470216</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47470216</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47470216</guid></item><item><title><![CDATA[New comment by dguest in "UMD Scientists Create 'Smart Underwear' to Measure Human Flatulence"]]></title><description><![CDATA[
<p>Ig Nobel is doing more for science than Nobel:<p>- It's fun.<p>- The prizes are accessible to young scientists who actually need the career boost from the publicity (as opposed to established scientists who are mostly boosting the prestige of the prize)<p>- They promote awareness of how diverse and awesome science is.</p>
]]></description><pubDate>Sun, 15 Mar 2026 17:00:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=47389289</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47389289</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47389289</guid></item><item><title><![CDATA[New comment by dguest in "Wired headphone sales are exploding"]]></title><description><![CDATA[
<p>I've almost caved and bought bluetooth because most stores stopped stocking wired headphones above crap-grade. But maybe I can just wait this out, if wired really is making a comeback.</p>
]]></description><pubDate>Sat, 14 Mar 2026 17:44:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=47379117</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47379117</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47379117</guid></item><item><title><![CDATA[New comment by dguest in "Don't post generated/AI-edited comments. HN is for conversation between humans"]]></title><description><![CDATA[
<p>I really like the street sign analogy.<p>But in my case it was the other way around. I work in a Kowloon Walled City of code: dozens of intersecting communities with thousands of informally organized but largely content contributors. It looks like chaos, but it works ok.<p>Code formatting really did feel like a new neighbor declaring "you know what this place needs, better-marked bus lanes!" as though that would help them see the sky from the bottom of an ally or fix the underlying sanitation issues. As you might imagine, the efforts didn't get far and mostly annoyed people.<p>But as the GP said, it all depends on the culture. If you pick up and move to Singapore you'd damn well better keep your car washed and your code style black.</p>
]]></description><pubDate>Sat, 14 Mar 2026 16:00:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=47377986</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47377986</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47377986</guid></item><item><title><![CDATA[New comment by dguest in "Don't post generated/AI-edited comments. HN is for conversation between humans"]]></title><description><![CDATA[
<p>First time I saw this hell was when a junior colleague convinced a rather senior one to use black. Of course senior went bumbling around black-ing every file he touched, including some random thousand-line files in long-lived forks of an established code base. Those files became essentially unmergable from then on.<p>It was a confluence of a lot of bad design features and blunders and I can't blame the formatter for the mess it caused. So I understand your point but, I'd amend it a bit: version control is the reason many projects <i>require a specific formatting</i> style.<p>In projects without an explicit style, the number one formatting rule is don't reformat code you didn't touch.</p>
]]></description><pubDate>Sat, 14 Mar 2026 15:28:13 +0000</pubDate><link>https://news.ycombinator.com/item?id=47377658</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47377658</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47377658</guid></item><item><title><![CDATA[New comment by dguest in "Don't post generated/AI-edited comments. HN is for conversation between humans"]]></title><description><![CDATA[
<p>It's worse than relinquishing: you get a new voice, that of the person needs an LLM to talk.<p>I have similar reservations about code formatters: maybe I just haven't worked with a code base with enough terrible formatting, but I'm sad when programmers loose the little voice they have. Linters: cool; style <i>guidelines</i>: fine. I'm cool with both, but the idea that we need to strip every character of junk DNA from a codebase seems excessive.</p>
]]></description><pubDate>Thu, 12 Mar 2026 07:57:38 +0000</pubDate><link>https://news.ycombinator.com/item?id=47347752</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47347752</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47347752</guid></item><item><title><![CDATA[New comment by dguest in "Unlocking Python's Cores:Energy Implications of Removing the GIL"]]></title><description><![CDATA[
<p>Is the GIL implemented as a run-time option? I thought this feature had to be enabled at compile-time.</p>
]]></description><pubDate>Mon, 09 Mar 2026 16:15:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=47311041</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47311041</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47311041</guid></item><item><title><![CDATA[New comment by dguest in "Good software knows when to stop"]]></title><description><![CDATA[
<p>I think Signal (the messenger) is an interesting example: by being free, open source, and privacy centered, there's automatically no room for ads and it's difficult to monetize. Also they have to be very careful adding new features for security reasons.<p>The result: very few features. Which is exactly what I want.</p>
]]></description><pubDate>Thu, 05 Mar 2026 21:03:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=47267261</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47267261</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47267261</guid></item><item><title><![CDATA[New comment by dguest in "“Microslop” filtered in the official Microsoft Copilot Discord server"]]></title><description><![CDATA[
<p>People don't like your company.<p>But they'd probably like you.<p><3</p>
]]></description><pubDate>Mon, 02 Mar 2026 19:59:05 +0000</pubDate><link>https://news.ycombinator.com/item?id=47223264</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47223264</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47223264</guid></item><item><title><![CDATA[New comment by dguest in "EU mandates replaceable batteries by 2027 (2023)"]]></title><description><![CDATA[
<p>That's another aspect of the regulation but as far as I can tell (from skimming the actual mandate, or the other summaries I found of it) it's doing both. The release itself says<p>> Starting in 2027, consumers will be able to remove and replace the portable batteries in their electronic products at any time of the life cycle.<p>Interesting that it's <i>also</i> introducing limits on EV carbon footprints, but that's not to the exclusion of mandating replaceable phone batteries.</p>
]]></description><pubDate>Mon, 23 Feb 2026 09:17:03 +0000</pubDate><link>https://news.ycombinator.com/item?id=47119936</link><dc:creator>dguest</dc:creator><comments>https://news.ycombinator.com/item?id=47119936</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47119936</guid></item></channel></rss>