<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: xiii1408</title><link>https://news.ycombinator.com/user?id=xiii1408</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Wed, 20 May 2026 06:54:06 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=xiii1408" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by xiii1408 in "I’ve built a virtual museum with nearly every operating system you can think of"]]></title><description><![CDATA[
<p><a href="https://www.lysator.liu.se/hackdict/split/avatar.html" rel="nofollow">https://www.lysator.liu.se/hackdict/split/avatar.html</a></p>
]]></description><pubDate>Tue, 19 May 2026 23:58:30 +0000</pubDate><link>https://news.ycombinator.com/item?id=48201289</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=48201289</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48201289</guid></item><item><title><![CDATA[New comment by xiii1408 in "Opus 4.7 knows the real Kelsey"]]></title><description><![CDATA[
<p>Hot damn, fed it part of an unpublished blog post I wrote, and it got me immediately.<p>I'm not famous or anything.  I've written some academic papers and had a couple blog posts trend on HN, which are surely in the training set.<p>It was able to identify me based on my style (at least according to its explanation).  The way I approached the topic and some of the notation I used point to a particular academic lineage, and the general style reflected my previous blog posts.<p>That said, I gave it part of an (unpublished) personal essay, and it had no idea.  But I have no writing in that style that's published, so it makes sense.  Still impressed.</p>
]]></description><pubDate>Fri, 01 May 2026 04:42:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=47971361</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=47971361</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47971361</guid></item><item><title><![CDATA[New comment by xiii1408 in "Aircraft detection at planetary scale"]]></title><description><![CDATA[
<p>It's not at all comparable.  ADS-B is opt-in: you place an ADS-B out transmitter in your plane and turn it on to transmit your position [1].  You're perfectly free to turn your ADS-B off if you like.  It's not even required for most of the US, so some planes may not have it installed (ADS-B out is only required within 30 nautical miles of a Class B airport [big airport], inside Class C airspace [medium-size airport], or in Class A airspace [18,000 ft above sea level]).<p>Military aircraft don't use ADS-B out a lot of the time.  Spy planes are obviously not going to transmit their locations.  A civilian plane with an electrical failure might stop transmitting ADS-B out.  Being able to identify planes via satellite is a whole separate capability.<p>[1] In all the planes I've flown, ADS-B is configured to transmit whenever the master electrical switch is turned on, but it can be configured to be turned on and off at will.  See this video on a mid-air collision involving an eccentric character who liked to fly with ADS-B out turned off: <a href="https://youtu.be/G5y3JiOEnVs?si=rs5gNMurZ9ssUloS" rel="nofollow">https://youtu.be/G5y3JiOEnVs?si=rs5gNMurZ9ssUloS</a>.  If I recall correctly, he had his ADS-B wired to his nav lights so he could turn it on and off at will.</p>
]]></description><pubDate>Mon, 24 Mar 2025 22:30:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=43466064</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=43466064</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=43466064</guid></item><item><title><![CDATA[New comment by xiii1408 in "TikTok's algorithm exhibited pro-Republican bias during 2024 presidential race"]]></title><description><![CDATA[
<p>People do these same sock puppet studies on Twitter/YouTube/etc. and find biases there as well.  There's a lot of literature out there.<p>Here's a recent study on YouTube from the same author as this TikTok study finding left-leaning bias in US recommendations: <a href="https://academic.oup.com/pnasnexus/article/2/8/pgad264/7242446" rel="nofollow">https://academic.oup.com/pnasnexus/article/2/8/pgad264/72424...</a>.<p>Here's a somewhat older study from Twitter itself where they determined that their recommendations were biased toward right-leaning accounts: <a href="https://cdn.cms-twdigitalassets.com/content/dam/blog-twitter/official/en_us/company/2021/rml/Algorithmic-Amplification-of-Politics-on-Twitter.pdf" rel="nofollow">https://cdn.cms-twdigitalassets.com/content/dam/blog-twitter...</a>.<p>IMO the interesting question is not whether an individual platform is biased and what its biases are, but rather how we might regulate recommendations given that there is always a risk of bias.</p>
]]></description><pubDate>Wed, 05 Feb 2025 01:04:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=42941955</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=42941955</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42941955</guid></item><item><title><![CDATA[New comment by xiii1408 in "TikTok's algorithm exhibited pro-Republican bias during 2024 presidential race"]]></title><description><![CDATA[
<p>I think this is a valid point and a really interesting question.  If that's the standard, we need to regulate all recommendation algorithms.  (i.e. put limits on Twitter, Instagram, and YouTube as well.)<p>How could we regulate this?  I can think of two ways:<p>- Results-based enforcement.  i.e., companies are free to use whatever recommendation model they like, but have to recommend content within ideological bounds.  i.e., you can't bias toward one partisanship more than X%.  There's some precedent for this with the equal-time rule (<a href="https://en.wikipedia.org/wiki/Equal-time_rule" rel="nofollow">https://en.wikipedia.org/wiki/Equal-time_rule</a>) and FCC fairness doctrine (<a href="https://en.wikipedia.org/wiki/Fairness_doctrine" rel="nofollow">https://en.wikipedia.org/wiki/Fairness_doctrine</a>).<p>- Algorithm-based enforcement.  i.e., there are limits on the algorithm itself.  Perhaps you have to present your algorithm to a government agency and provide a proof that it obeys certain properties.  But the enforcement here is analytical rather than empirical.</p>
]]></description><pubDate>Tue, 04 Feb 2025 19:34:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=42937443</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=42937443</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42937443</guid></item><item><title><![CDATA[New comment by xiii1408 in "TikTok's algorithm exhibited pro-Republican bias during 2024 presidential race"]]></title><description><![CDATA[
<p>I think the key metric missing here is how long the user watches each video. Likes and replies are probably helpful too, but when I've used short-form video content apps like TikTok, Reels, and YouTube Shorts before, they've gotten a pretty good measure of me without me ever liking, replying, or following.<p>With the current methodology, the bot either watches the whole video, a fixed duration of it, or a random duration before swiping. The bot doesn't organically watch or swipe based on its interests like a human user would.</p>
]]></description><pubDate>Tue, 04 Feb 2025 19:09:27 +0000</pubDate><link>https://news.ycombinator.com/item?id=42937120</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=42937120</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42937120</guid></item><item><title><![CDATA[New comment by xiii1408 in "TikTok's algorithm exhibited pro-Republican bias during 2024 presidential race"]]></title><description><![CDATA[
<p>Perhaps I should have been more clear.  It's TikTok, so of course the only way to collect recommendations is to watch videos.  Some studies watch the whole video, some just watch part of it, but it's TikTok, so fundamentally you're watching a video.</p>
]]></description><pubDate>Tue, 04 Feb 2025 19:01:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=42936998</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=42936998</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42936998</guid></item><item><title><![CDATA[New comment by xiii1408 in "TikTok's algorithm exhibited pro-Republican bias during 2024 presidential race"]]></title><description><![CDATA[
<p>It's another sock puppet study: <a href="https://arxiv.org/abs/2501.17831" rel="nofollow">https://arxiv.org/abs/2501.17831</a><p>Very similar methodology to an earlier study the government cited in their case against TikTok: <a href="https://networkcontagion.us/wp-content/uploads/NCRI-Report_-The-CCPs-Digital-Charm-Offensive.pdf" rel="nofollow">https://networkcontagion.us/wp-content/uploads/NCRI-Report_-...</a><p>There are a number of issues with these studies, one being that the way the sock puppet bots interact with content is not exactly organic.  Typically they search for content in a conditioning phase, followed by random scrolling during which the recommended videos are collected and classified by an LLM.  Modern recommendation algorithms famously work by examining how long and how users engage with content, and there's none of that going on here.  Still, the methodology itself and the use of LLMs to classify content is clever and probably about the best we can get.<p>Also, even if there _is_ a bias, it doesn't tell us why.  Are the recommendations intentionally spiked, or is this simply the recommendation strategy that maximizes profit?  (Or that the recommendation model thinks will maximize profit?)  It's very difficult to tell, which is part of what makes these models dangerous and also part of what makes them difficult to regulate.<p>On a sidenote, TikTok (and presumably other content platforms) _really_ does not like these studies, as demonstrated by them nerfing search functionality after the second study above was released to prevent researchers using these techniques in the future.  I haven't read the study in detail yet, but it will be interesting to see how the team at NYU Abu Dhabi adapted their methodology.</p>
]]></description><pubDate>Tue, 04 Feb 2025 18:28:36 +0000</pubDate><link>https://news.ycombinator.com/item?id=42936574</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=42936574</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42936574</guid></item><item><title><![CDATA[New comment by xiii1408 in "Caltech's CS interview prep course"]]></title><description><![CDATA[
<p>Yeah, I'd say this is exactly what's going on at big tech companies.  Add to that the need for an interview process that is very standardized for (1) scalability in a large company and (2) legal protection against discrimination (at least nominally), and it makes a load of sense.</p>
]]></description><pubDate>Sun, 27 Feb 2022 21:18:54 +0000</pubDate><link>https://news.ycombinator.com/item?id=30492622</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=30492622</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=30492622</guid></item><item><title><![CDATA[PGAS in C++: Building Distributed Data Structures Using RDMA]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.youtube.com/watch?v=mZwUG8s3b14">https://www.youtube.com/watch?v=mZwUG8s3b14</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=30303795">https://news.ycombinator.com/item?id=30303795</a></p>
<p>Points: 6</p>
<p># Comments: 0</p>
]]></description><pubDate>Fri, 11 Feb 2022 17:02:59 +0000</pubDate><link>https://www.youtube.com/watch?v=mZwUG8s3b14</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=30303795</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=30303795</guid></item><item><title><![CDATA[New comment by xiii1408 in "AI could end foreign-language subtitles"]]></title><description><![CDATA[
<p>There's also the problem of content which doesn't have subtitles to begin with---YouTube's automatic subtitle generation is great, but could be improved and expanded to languages other than English.</p>
]]></description><pubDate>Wed, 19 Jan 2022 22:34:12 +0000</pubDate><link>https://news.ycombinator.com/item?id=30001371</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=30001371</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=30001371</guid></item><item><title><![CDATA[New comment by xiii1408 in "AI could end foreign-language subtitles"]]></title><description><![CDATA[
<p>Yes!  My perennial problem is that most Chinese TV content has excellent subtitles, but they're burned in to the videos.  So if I want to watch a Chinese show with a friend who doesn't read Chinese, there's no option even for auto-translated subtitles.  I've often thought of writing a script to generate subtitle files using text recognition, but haven't gotten around to it.</p>
]]></description><pubDate>Wed, 19 Jan 2022 22:33:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=30001352</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=30001352</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=30001352</guid></item><item><title><![CDATA[New comment by xiii1408 in "[dead]"]]></title><description><![CDATA[
<p>Becoming more and more surprised by intentionally misleading headlines these days....<p>Shocker---you might be required to be vaccinated in order to live in a facility for ultra-sick kids, many of whom are immunocompromised.  I guess that's an "insult to the Canadian anthem" somehow.</p>
]]></description><pubDate>Wed, 12 Jan 2022 22:27:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=29913617</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=29913617</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29913617</guid></item><item><title><![CDATA[New comment by xiii1408 in "Show HN: Clone your voice and speak a foreign language"]]></title><description><![CDATA[
<p>Pretty interesting!  I tried this both English -> French and French -> English.<p>English -> French seemed to work best, with the AI output have a very similar timbre to my real voice.  Not hyperrealistic for me, but decent enough given I gave it a ~20s sample.<p>French -> English was less good in terms of the timbre and pitch of the voice---way higher than my real voice.  It did have a bit of a Canadian accent, though, which is funny because I speak French with a Quebec accent.  Maybe that's what I would sound like if I had a Canadian accent in English?</p>
]]></description><pubDate>Tue, 04 Jan 2022 00:44:14 +0000</pubDate><link>https://news.ycombinator.com/item?id=29789401</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=29789401</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29789401</guid></item><item><title><![CDATA[New comment by xiii1408 in "Subsea Cable to Connect Asia, Europe, and North America Through the Arctic"]]></title><description><![CDATA[
<p>Unfortunately probably none, unless you live pretty far north.  We're pretty close to the speed of light limit* when it comes to latency between the US and Asia, which makes sense as a straight line is over the Pacific anyway.  (e.g., I get ~1.1x the theoretical min latency pinging Tokyo from my Fiber connection in the SF Bay Area)<p>Where it seems like we're pretty far from the theoretical min is connections within the continental US.  Latency is pretty bad (e.g. I get like 1.5x - 4x the theoretical min latency from my Fiber connection in the SF Bay Area, depending on endpoint).  I assume part of this is indirect connections (you don't have a direct fiber connection between every pair of cities, because that would be dumb) and some of it is routing overhead (a connection to Asia goes a long distance, but often has way fewer hops).<p><i>Note that this is theoretical min latency based on the speed of light </i>through fiber*, which is a bit higher than (about 5/3x) the speed of light through air.  New fiber optic tech might help this at some point.</p>
]]></description><pubDate>Fri, 24 Dec 2021 15:27:46 +0000</pubDate><link>https://news.ycombinator.com/item?id=29674339</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=29674339</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29674339</guid></item><item><title><![CDATA[CppCon 2021: “GraphBLAS: Building a C++ Matrix Library for Graph Algorithms”]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.youtube.com/watch?v=xMBNCtFV8sI">https://www.youtube.com/watch?v=xMBNCtFV8sI</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=29614581">https://news.ycombinator.com/item?id=29614581</a></p>
<p>Points: 5</p>
<p># Comments: 0</p>
]]></description><pubDate>Sun, 19 Dec 2021 15:20:07 +0000</pubDate><link>https://www.youtube.com/watch?v=xMBNCtFV8sI</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=29614581</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=29614581</guid></item><item><title><![CDATA[New comment by xiii1408 in "Steam bans all blockchain and NFT games on its platform"]]></title><description><![CDATA[
<p>Considering all the crazy shit that goes down with CSGO skins, which have a much more controlled market than NFTs, I find this pretty unsurprising.<p>For anyone unfamiliar with the CSGO skins market and the explosion of illegal gambling sites a few years ago, I highly recommend this video [1].<p>[1] <a href="https://www.youtube.com/watch?v=qSkXFUw8tTU" rel="nofollow">https://www.youtube.com/watch?v=qSkXFUw8tTU</a></p>
]]></description><pubDate>Fri, 15 Oct 2021 19:27:33 +0000</pubDate><link>https://news.ycombinator.com/item?id=28882026</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=28882026</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=28882026</guid></item><item><title><![CDATA[New comment by xiii1408 in "Linux on the Framework Laptop"]]></title><description><![CDATA[
<p>Ooh, great to hear!</p>
]]></description><pubDate>Wed, 01 Sep 2021 19:46:37 +0000</pubDate><link>https://news.ycombinator.com/item?id=28384721</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=28384721</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=28384721</guid></item><item><title><![CDATA[New comment by xiii1408 in "Linux on the Framework Laptop"]]></title><description><![CDATA[
<p>I'm extremely excited about this project.  If the product reviews end up as positive as the pre-production reviews, my next laptop is definitely going to be a Framework Laptop.</p>
]]></description><pubDate>Wed, 01 Sep 2021 18:56:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=28384130</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=28384130</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=28384130</guid></item><item><title><![CDATA[New comment by xiii1408 in "My mindfulness practice led me to meltdown"]]></title><description><![CDATA[
<p>There was an excellent article in Harpers about this a few months ago: <a href="https://harpers.org/archive/2021/04/lost-in-thought-psychological-risks-of-meditation/" rel="nofollow">https://harpers.org/archive/2021/04/lost-in-thought-psycholo...</a><p>I had no idea, but schizophrenic breaks and other psychological symptoms are not uncommon at meditation retreats, and staff are often untrained on how to deal with it.<p>Sorry this happened to you OP, and I hope you're able to get effective help.</p>
]]></description><pubDate>Tue, 20 Jul 2021 15:29:18 +0000</pubDate><link>https://news.ycombinator.com/item?id=27894942</link><dc:creator>xiii1408</dc:creator><comments>https://news.ycombinator.com/item?id=27894942</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=27894942</guid></item></channel></rss>