<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: robrenaud</title><link>https://news.ycombinator.com/user?id=robrenaud</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Tue, 08 Sep 2026 13:24:58 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=robrenaud" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by robrenaud in "Harnessing the Universal Geometry of Embeddings"]]></title><description><![CDATA[
<p>It's cool that it proves that a bunch of vectorized outputs from an unknown embedder on an unknown dataset is in no way private, because of this ability to reverse engineer the embedder.<p>I talked to the author at his poster session at neurips and was able to get the gist, though I had read a lot about the platonic representation hypothesis, and this was one of my top 10 favorite papers in the conference.</p>
]]></description><pubDate>Mon, 07 Sep 2026 03:57:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=49593718</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=49593718</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49593718</guid></item><item><title><![CDATA[New comment by robrenaud in "Harnessing the Universal Geometry of Embeddings"]]></title><description><![CDATA[
<p>I think a less stringent, but still workable assumption is that for very similair objects, their distances will be small.  This is much easier to accomplish than agreement across all pairs.</p>
]]></description><pubDate>Mon, 07 Sep 2026 03:52:57 +0000</pubDate><link>https://news.ycombinator.com/item?id=49593693</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=49593693</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49593693</guid></item><item><title><![CDATA[New comment by robrenaud in "OpenAI's new reasoning technique alarms AI safety experts"]]></title><description><![CDATA[
<p>The number of steps between token outputs is increasing.<p>I don't actually think this is a problem, but it is a further step towards inscrutability.</p>
]]></description><pubDate>Thu, 03 Sep 2026 19:05:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=49555054</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=49555054</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49555054</guid></item><item><title><![CDATA[New comment by robrenaud in "Classical chess ranks 562nd of 960 starting positions after 460,800 games"]]></title><description><![CDATA[
<p>If black and white had different permutations of the back row, you could find more balanced starting positions. Adopt more flexible starting conditions in the computer chess age.</p>
]]></description><pubDate>Thu, 27 Aug 2026 14:51:52 +0000</pubDate><link>https://news.ycombinator.com/item?id=49465837</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=49465837</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49465837</guid></item><item><title><![CDATA[New comment by robrenaud in "Show HN: Cactus Hybrid: We taught Gemma 4 to know when it's wrong"]]></title><description><![CDATA[
<p>Does the model quality become degraded in other ways?</p>
]]></description><pubDate>Thu, 23 Jul 2026 01:40:41 +0000</pubDate><link>https://news.ycombinator.com/item?id=49015777</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=49015777</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=49015777</guid></item><item><title><![CDATA[New comment by robrenaud in "What did SFFA vs. Harvard reveal about admissions?"]]></title><description><![CDATA[
<p>Do consider the incentives of those developing the model that made those predictions.  Afaict, it was not selected for purpose other than testimony.</p>
]]></description><pubDate>Tue, 14 Jul 2026 02:37:35 +0000</pubDate><link>https://news.ycombinator.com/item?id=48901619</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48901619</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48901619</guid></item><item><title><![CDATA[New comment by robrenaud in "Ask HN: What Are You Working On? (July 2026)"]]></title><description><![CDATA[
<p>How do you get personalization without surveillance?</p>
]]></description><pubDate>Mon, 13 Jul 2026 18:08:56 +0000</pubDate><link>https://news.ycombinator.com/item?id=48896472</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48896472</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48896472</guid></item><item><title><![CDATA[New comment by robrenaud in "Parse, Don't Validate – In a Language That Doesn't Want You To"]]></title><description><![CDATA[
<p>I suspect idiomatic TypeScript or idiomatic F# are both way better solutions in the real world 
 than abstruse Typescript emulating idiomatic F#.</p>
]]></description><pubDate>Tue, 30 Jun 2026 13:39:09 +0000</pubDate><link>https://news.ycombinator.com/item?id=48732610</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48732610</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48732610</guid></item><item><title><![CDATA[New comment by robrenaud in "GLM 5.2 beats Claude in our benchmarks"]]></title><description><![CDATA[
<p>If a good SWE is $150/hour, does the model cost actually matter?  Surely you'd be willing to spend $10/hour to make that SWE 20% more productive?  The model cost is still much less than the salary.</p>
]]></description><pubDate>Mon, 29 Jun 2026 05:48:50 +0000</pubDate><link>https://news.ycombinator.com/item?id=48715320</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48715320</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48715320</guid></item><item><title><![CDATA[New comment by robrenaud in "Cybersecurity researchers aren't happy about the guardrails on Anthropic's Fable"]]></title><description><![CDATA[
<p>They use a lightweight adapter to silently degrade the performance. Usually these adaptors are made to improve the performance for a given domain/task.</p>
]]></description><pubDate>Thu, 11 Jun 2026 00:16:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=48484633</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48484633</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48484633</guid></item><item><title><![CDATA[New comment by robrenaud in "They’re made out of weights"]]></title><description><![CDATA[
<p>3 blue 1 brown has a great visual introduction to transformers, the heart of LLMs.<p>It's chapter 5.  Start at chapter 1 if you want more background on neural nets and backprop.<p><a href="https://youtu.be/wjZofJX0v4M?si=HFXbrB-5cArprGaU" rel="nofollow">https://youtu.be/wjZofJX0v4M?si=HFXbrB-5cArprGaU</a></p>
]]></description><pubDate>Thu, 04 Jun 2026 15:56:31 +0000</pubDate><link>https://news.ycombinator.com/item?id=48400517</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48400517</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48400517</guid></item><item><title><![CDATA[New comment by robrenaud in "They’re made out of weights"]]></title><description><![CDATA[
<p>"The reasoning is the weights."<p>The reasoning is in a process that uses the weights.<p>Sorting algorithms are just bytes. Those bytes don't sort by themselves.  They do instruct a computer on how to sort though.</p>
]]></description><pubDate>Thu, 04 Jun 2026 15:48:01 +0000</pubDate><link>https://news.ycombinator.com/item?id=48400395</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48400395</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48400395</guid></item><item><title><![CDATA[New comment by robrenaud in "Local AI needs to be the norm"]]></title><description><![CDATA[
<p>There is some recent work on modularizing knowledge in LLMs.<p><a href="https://arxiv.org/html/2605.06663v1" rel="nofollow">https://arxiv.org/html/2605.06663v1</a><p>It might be possible to train a big generalist that is a composition of modules, some of which can be dropped dynamically at inference time, depending on the prompt.</p>
]]></description><pubDate>Mon, 11 May 2026 14:04:08 +0000</pubDate><link>https://news.ycombinator.com/item?id=48095173</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=48095173</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48095173</guid></item><item><title><![CDATA[New comment by robrenaud in "Google and Pentagon reportedly agree on deal for 'any lawful' use of AI"]]></title><description><![CDATA[
<p>Is every American tax payer morally compromised?</p>
]]></description><pubDate>Tue, 28 Apr 2026 18:12:06 +0000</pubDate><link>https://news.ycombinator.com/item?id=47938232</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47938232</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47938232</guid></item><item><title><![CDATA[New comment by robrenaud in "United Wizards of the Coast"]]></title><description><![CDATA[
<p>My big gripe with unions is the unwavering protection of their worst performing members.<p>Eg, that they necessitated so called "rubber rooms" like these in the NYC public schools, where teachers got paid to do nothing while waiting on arbitration.<p><a href="https://en.wikipedia.org/wiki/Reassignment_center" rel="nofollow">https://en.wikipedia.org/wiki/Reassignment_center</a></p>
]]></description><pubDate>Mon, 27 Apr 2026 20:05:47 +0000</pubDate><link>https://news.ycombinator.com/item?id=47926624</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47926624</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47926624</guid></item><item><title><![CDATA[New comment by robrenaud in "Sauna effect on heart rate"]]></title><description><![CDATA[
<p>The flat earthers are why I hate astronomy.<p>Afaict, the grand parent poster is just very wrong.  You do want to cause acute stresses to your heart (cardiovascular exercise) to get it work better.</p>
]]></description><pubDate>Mon, 20 Apr 2026 15:17:42 +0000</pubDate><link>https://news.ycombinator.com/item?id=47835582</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47835582</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47835582</guid></item><item><title><![CDATA[New comment by robrenaud in "Claude Opus 4.7"]]></title><description><![CDATA[
<p>Yeah, it's different.  Anthropic profits when it delivers tokens.  Hosting providers pay when Anthropic scrapes them.</p>
]]></description><pubDate>Thu, 16 Apr 2026 21:48:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=47799944</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47799944</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47799944</guid></item><item><title><![CDATA[New comment by robrenaud in "TinyLoRA – Learning to Reason in 13 Parameters"]]></title><description><![CDATA[
<p>Yeah, my big problem with the paper is it just might be an artifact of qwen's training process.</p>
]]></description><pubDate>Wed, 01 Apr 2026 05:57:30 +0000</pubDate><link>https://news.ycombinator.com/item?id=47597327</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47597327</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47597327</guid></item><item><title><![CDATA[New comment by robrenaud in "Yann LeCun's AI startup raises $1B in Europe's largest ever seed round"]]></title><description><![CDATA[
<p>Was Alphago's move 37 original?<p>In the last step of training LLMs, reinforcement learning from verified rewards, LLMs are trained to maximize the probability of solving problems using their own output, depending on a reward signal akin to winning in Go. It's not just imitating human written text.<p>Fwiw, I agree that world models and some kind of learning from interacting with physical reality, rather than massive amounts of digitized gym environments is likely necessary for a breakthrough for AGI.</p>
]]></description><pubDate>Tue, 10 Mar 2026 15:36:17 +0000</pubDate><link>https://news.ycombinator.com/item?id=47324708</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47324708</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47324708</guid></item><item><title><![CDATA[New comment by robrenaud in "Yann LeCun raises $1B to build AI that understands the physical world"]]></title><description><![CDATA[
<p>Recursive self improvement.  It's when  AI speeds up the development of the next AI.</p>
]]></description><pubDate>Tue, 10 Mar 2026 15:24:59 +0000</pubDate><link>https://news.ycombinator.com/item?id=47324548</link><dc:creator>robrenaud</dc:creator><comments>https://news.ycombinator.com/item?id=47324548</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47324548</guid></item></channel></rss>