<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: mrfox321</title><link>https://news.ycombinator.com/user?id=mrfox321</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Wed, 15 Apr 2026 20:05:21 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=mrfox321" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by mrfox321 in "DMT-induced shifts in criticality correlate with self-dissolution"]]></title><description><![CDATA[
<p>... the toppings contains potassium benzoate</p>
]]></description><pubDate>Sat, 29 Nov 2025 17:28:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=46089207</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=46089207</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46089207</guid></item><item><title><![CDATA[New comment by mrfox321 in "Google can now read your WhatsApp messages"]]></title><description><![CDATA[
<p>I know right?<p>They have always been behind.  Why would this time be any different?</p>
]]></description><pubDate>Tue, 08 Jul 2025 18:41:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=44502794</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=44502794</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44502794</guid></item><item><title><![CDATA[New comment by mrfox321 in "Q-learning is not yet scalable"]]></title><description><![CDATA[
<p>Read the paper.<p>They control for the data being in-distribution<p>Their dataset also has examples of the problem being solved.</p>
]]></description><pubDate>Sun, 15 Jun 2025 13:26:43 +0000</pubDate><link>https://news.ycombinator.com/item?id=44282185</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=44282185</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44282185</guid></item><item><title><![CDATA[New comment by mrfox321 in "OpenAI to buy AI startup from Jony Ive"]]></title><description><![CDATA[
<p>Sounds like excuses</p>
]]></description><pubDate>Wed, 21 May 2025 17:50:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=44054151</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=44054151</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44054151</guid></item><item><title><![CDATA[New comment by mrfox321 in "Some thoughts on autoregressive models"]]></title><description><![CDATA[
<p>They didn't show this, they just increased the length where accuracy breaks down.</p>
]]></description><pubDate>Fri, 07 Mar 2025 10:51:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=43289112</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=43289112</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=43289112</guid></item><item><title><![CDATA[New comment by mrfox321 in "Broken Legs and Ankles Heal Better If You Walk on Them Within Weeks"]]></title><description><![CDATA[
<p>What's your leg circumference at, now?<p>Mine is also smaller, due to patella tendinopathy.</p>
]]></description><pubDate>Wed, 19 Feb 2025 15:07:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=43102882</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=43102882</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=43102882</guid></item><item><title><![CDATA[New comment by mrfox321 in "What happens when a whole generation never grows up?"]]></title><description><![CDATA[
<p>Who do you think the shareholders are?<p>What demographic are they?</p>
]]></description><pubDate>Thu, 02 Jan 2025 19:10:23 +0000</pubDate><link>https://news.ycombinator.com/item?id=42577630</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42577630</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42577630</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>It's because they originally built their recommendation system to recommend friends and their content. Here, the social graph makes complete sense as the foundation for their simple search algorithm.
But as they expanded their recommendation capabilities, the features stuck around. It's the same reason why tech debt accumulates. Data sticks around in the same way code does. But data is even higher friction, since it's a superset of the code.</p>
]]></description><pubDate>Fri, 20 Dec 2024 15:28:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=42471909</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42471909</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42471909</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>I mean, it's their serving infra, but not their features.  See my reply in another parent comment.</p>
]]></description><pubDate>Fri, 20 Dec 2024 15:14:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=42471769</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42471769</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42471769</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>It's simpler intuition but more complex from a data / ml perspective.<p>Their algorithm is really built around their features.  Specifically, temporal representations of user interest:<p><a href="https://ieeexplore.ieee.org/document/9458799/" rel="nofollow">https://ieeexplore.ieee.org/document/9458799/</a><p>The features used by their algorithm tells you what a user is interested, historically.<p>Contrast this to Meta, which uses the social graph as their features.  Imagine features like the number of times a user likes another author's / cluster's content.<p>Tiktok will serve you $TOPIC because you have $INTERACTED with $TOPIC historically.<p>Meta will serve you $TOPIC because you have $INTERACTED with $PEOPLE who post $TOPIC, historically.<p>Meta only coincidentally gives you what you like.<p>Tiktok knows what you like.<p>This is the difference.  This is why IG is losing.</p>
]]></description><pubDate>Fri, 20 Dec 2024 15:12:07 +0000</pubDate><link>https://news.ycombinator.com/item?id=42471728</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42471728</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42471728</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>IG users and Tiktok users were / are quite similar.  Especially when Tiktok wasn't yet eating IGs lunch.</p>
]]></description><pubDate>Fri, 20 Dec 2024 15:07:06 +0000</pubDate><link>https://news.ycombinator.com/item?id=42471671</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42471671</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42471671</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>IG has plenty of data (I did ML at IG). Don't be naive.</p>
]]></description><pubDate>Fri, 20 Dec 2024 14:08:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=42471174</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42471174</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42471174</guid></item><item><title><![CDATA[New comment by mrfox321 in "ByteDance's Recommendation System"]]></title><description><![CDATA[
<p>Not true. Why do IG reels and YouTube shorts suck, then?<p>They clearly built something superior.  And it can't seem to be matched by the biggest tech companies.</p>
]]></description><pubDate>Fri, 20 Dec 2024 13:44:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=42470991</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42470991</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42470991</guid></item><item><title><![CDATA[New comment by mrfox321 in "Engineers do not get to make startup mistakes when they build ledgers"]]></title><description><![CDATA[
<p>At a big co I worked at, the lack of consistency between trading systems caused money to (dis)appear (into)out of thin air.<p>Prior to one of these hiccups, I hypothesized, given how shitty the codebase was, that they <i>must</i> be tracking this stuff poorly.<p>This led to an argument with my boss, who assumed things magically worked.<p>Days later, we received an email announcing an audit one one of these accounting discrepancies.<p>JPMC proposed using crypto, internally, to consistently manage cash flow.<p>Not sure if it went anywhere.</p>
]]></description><pubDate>Fri, 29 Nov 2024 02:38:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=42270315</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42270315</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42270315</guid></item><item><title><![CDATA[New comment by mrfox321 in "Brain learning differs fundamentally from artificial intelligence systems"]]></title><description><![CDATA[
<p>Second order methods, and their approximations, can be used in weight updating, too.</p>
]]></description><pubDate>Wed, 27 Nov 2024 23:54:59 +0000</pubDate><link>https://news.ycombinator.com/item?id=42261028</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42261028</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42261028</guid></item><item><title><![CDATA[New comment by mrfox321 in "How Apple Watch estimates VO2Max within 1.2 ml/kg/min without a treadmill test"]]></title><description><![CDATA[
<p>20 to 15 is insane.<p>Are these low 15s or high 15s?  Regardless, that's fantastic progress.<p>Do you respond better to intervals or longer aerobic efforts?<p>I ask because Ive always wondered if training should be specialized for fast/slow twitch runners.<p>Specifically, do you focus on strengths or weaknesses.<p>Let me follow you on Strava :p</p>
]]></description><pubDate>Tue, 05 Nov 2024 11:17:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=42050584</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=42050584</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=42050584</guid></item><item><title><![CDATA[New comment by mrfox321 in "An illustrated proof of the CAP theorem (2018)"]]></title><description><![CDATA[
<p>simultaneity is relative.<p>That's all.</p>
]]></description><pubDate>Tue, 08 Oct 2024 12:07:36 +0000</pubDate><link>https://news.ycombinator.com/item?id=41776430</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=41776430</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=41776430</guid></item><item><title><![CDATA[New comment by mrfox321 in "Too much efficiency makes everything worse (2022)"]]></title><description><![CDATA[
<p>More importantly, he invented diffusion models:<p><a href="http://proceedings.mlr.press/v37/sohl-dickstein15.pdf" rel="nofollow">http://proceedings.mlr.press/v37/sohl-dickstein15.pdf</a></p>
]]></description><pubDate>Sun, 29 Sep 2024 13:46:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=41687384</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=41687384</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=41687384</guid></item><item><title><![CDATA[New comment by mrfox321 in "How America's universities became debt factories"]]></title><description><![CDATA[
<p>China does this, for better or for worse.</p>
]]></description><pubDate>Sat, 14 Sep 2024 17:02:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=41541052</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=41541052</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=41541052</guid></item><item><title><![CDATA[New comment by mrfox321 in "Tree Attention: Topology-Aware Decoding for Long-Context"]]></title><description><![CDATA[
<p>Similar, but specialized to softmax(QK)V computation</p>
]]></description><pubDate>Mon, 12 Aug 2024 12:01:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=41223459</link><dc:creator>mrfox321</dc:creator><comments>https://news.ycombinator.com/item?id=41223459</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=41223459</guid></item></channel></rss>