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Agents built from alloys

news.ycombinator.com Unknown 2025-07-23 12:33:04

This spring, we had a simple and, to my knowledge, novel idea that turned out to dramatically boost the performance of our vulnerability detection agents at XBOW. On fixed benchmarks and with a constrained number of iterations, we saw success rates rise from 25% to 40%, and then soon after to 55%. The principles behind this idea are not limited to cybersecurity. They apply to a large class of agentic AI setups. Let me share. XBOW’s Challenge XBOW is an autonomous pentester. You point it at yo

Topics: different gemini model models sonnet

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Local cuisine was on the menu at Cafe Neanderthal

arstechnica.com Unknown 2025-07-24 16:46:48

Sixty thousand years ago, two groups of Neanderthals lived just a stone’s throw apart in what’s now northern Israel. But they had very different cultures when it came to food, according to a recent study. Archaeologist Anaëlle Jallon of Hebrew University of Jerusalem and her colleagues examined dozens of animal bones from both sites, looking for clues about Neanderthal meal prep. It turns out that something as mundane as the cut marks left by butchering an animal can reveal differences in ancien

Topics: bones different lived marks neanderthals

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Extending That XOR Trick to Billions of Rows

news.ycombinator.com Unknown 2025-07-22 09:15:41

Can we extend the XOR trick for finding one or two missing numbers in a list to finding thousands of missing IDs in a billion-row table? Yes, we can! This is possible using a data structure called an Invertible Bloom Filter (IBF) that compares two sets with space complexity based only on the size of the difference. Using a generalization of the XOR trick [1], all the values that are identical cancel out, so the size of this data structure depends only on the size of the difference. Most explan

Topics: difference ibf set trick xor

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The (Unfinished) PDE Coffee Table Book

news.ycombinator.com Unknown 2025-07-26 11:03:48

THE (UNFINISHED) PDE COFFEE TABLE BOOK Lloyd N. Trefethen and Kristine Embree, editors Unpublished, 2001 During 2000-2001 a group project based in the Oxford University was begun to write this book. The vision was 100 2-page spreads, each one giving exactly the most useful possible starting information about a different partial differential equation, with beautiful color illustrations. Many people at Oxford and around the world contributed drafts, which were then extensively rewritten and e

Topics: book diffusion equation equations finished

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Signs of autism could be encoded in the way you walk

news.ycombinator.com The Conversation 2025-07-28 00:43:35

Autism is a neurodevelopmental condition that affects how people's brains develop and function, impacting behaviour, communication and socialising. It can also involve differences in the way you move and walk – known as your gait. Having an "odd gait" is now listed in the Diagnostic and Statistical Manual of Mental Disorders as a supporting diagnostic feature of autism. What does this look like? The most noticeable gait differences among autistic people are: toe-walking, walking on the balls

Topics: autistic children differences gait support

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Signs of Autism Could Be Encoded in the Way You Walk

news.ycombinator.com The Conversation 2025-07-29 01:43:35

Autism is a neurodevelopmental condition that affects how people's brains develop and function, impacting behaviour, communication and socialising. It can also involve differences in the way you move and walk – known as your gait. Having an "odd gait" is now listed in the Diagnostic and Statistical Manual of Mental Disorders as a supporting diagnostic feature of autism. What does this look like? The most noticeable gait differences among autistic people are: toe-walking, walking on the balls

Topics: autistic children differences gait support

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One of our favorite Ninja air fryers is 36 percent off right now

engadget.com Unknown 2025-08-01 01:20:55

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Prime Day might have ended last week, but that doesn't mean the sales are over. Amazon still has discounts on some of our favorite items, including our pick for best dual-zone air fryer. Right now, you can get the Ninja DZ401 Foodi Air Fryer for $160, down from $250. The 36 percent di

Topics: air cook different fryer including

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Diffsitter – A Tree-sitter based AST difftool to get meaningful semantic diffs

news.ycombinator.com Unknown 2025-08-07 05:51:19

diffsitter Disclaimer diffsitter is very much a work in progress and nowhere close to production ready (yet). Contributions are always welcome! Summary diffsitter creates semantically meaningful diffs that ignore formatting differences like spacing. It does so by computing a diff on the AST (abstract syntax tree) of a file rather than computing the diff on the text contents of the file. diffsitter uses the parsers from the tree-sitter project to parse source code. As such, the languages sup

Topics: config diffsitter fn sitter tree

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Tuesday Telescope: Webb and Hubble team up to reveal spectacular star clusters

arstechnica.com Unknown 2025-08-12 17:00:49

Welcome to the Tuesday Telescope. There is a little too much darkness in this world and not enough light—a little too much pseudoscience and not enough science. We’ll let other publications offer you a daily horoscope. At Ars Technica, we’ll take a different route, finding inspiration from very real images of a universe that is filled with stars and wonder. Open clusters of stars—which consist of dozens up to a few thousand stars—are an interesting tool for astronomers to study the Universe. T

Topics: clusters different light stars telescope

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Apple just released a weirdly interesting coding language model

news.ycombinator.com Marcus Mendes 2025-08-10 02:44:05

Apple quietly dropped a new AI model on Hugging Face with an interesting twist. Instead of writing code like traditional LLMs generate text (left to right, top to bottom), it can also write out of order, and improve multiple chunks at once. The result is faster code generation, at a performance that rivals top open-source coding models. Here’s how it works. The nerdy bits Here are some (overly simplified, in the name of efficiency) concepts that are important to understand before we can move

Topics: code diffucoder diffusion model models

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Optimizing Tool Selection for LLM Workflows with Differentiable Programming

news.ycombinator.com Viksit Gaur 2025-08-15 01:52:46

Modern agentic architectures rely heavily on chaining LLM calls. A typical pattern looks like: Use an LLM to decide which tool to invoke Call the tool (e.g. search, calculator, API) Use another LLM call to interpret the result and generate a final response This structure is easy to reason about, simple to prototype, and generalizes well. But it scales poorly. Each LLM call incurs latency, cost, and token overhead. More subtly, it compounds context: every step includes not only the original q

Topics: differentiable llm model routing tool

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A rare look inside the durability lab where Apple tortures its products

9to5mac.com Ben Lovejoy 2025-08-14 22:00:00

Apple puts its products through a lot of tests during the development process, intended to ensure they have a long and reliable life even in challenging conditions. The company tests at least 10,000 iPhones prior to launch in an attempt to cover all the bases. It’s not often the iPhone maker lets outsiders into its labs, but Apple invited some of those attending WWDC 2025 to visit one to see for themselves the conditions it expects its gadgets to survive … To be clear, it’s not the first time

Topics: apple different product tests water

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Apple just released a weirdly interesting coding language model

9to5mac.com Marcus Mendes 2025-08-16 13:53:04

Apple quietly dropped a new AI model on Hugging Face with an interesting twist. Instead of writing code like traditional LLMs generate text (left to right, top to bottom), it can also write out of order, and improve multiple chunks at once. The result is faster code generation, at a performance that rivals top open-source coding models. Here’s how it works. The nerdy bits Here are some (overly simplified, in the name of efficiency) concepts that are important to understand before we can move

Topics: code diffucoder diffusion model models

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I want to leave tech: what do I do?

news.ycombinator.com Conjure Utopia 2025-08-16 16:58:49

Let’s say you’re working in tech and you have a technical role: you’re a programmer, a graphic or UI/UX designer, a sysadmin, maybe even a product manager. Let’s say you want to leave, change career, and do something more meaningful with your skills. Your motivations may vary: you feel the tech industry produces nothing of value, or maybe you have the legitimate suspicion that what you build helps bomb innocent people somewhere. You might want to leave because of the individualistic culture tha

Topics: different industry people tech workers

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What James Gunn’s ‘Superman’ Tells Us About the Future of the DC Universe

gizmodo.com Germain Lussier 2025-08-19 22:00:43

It’s been years since James Gunn and Peter Safran first announced their plans for the future of the DC Universe. In that time, plans have changed slightly, and work is ongoing, but, with one exception, we have yet to see exactly how things are going to play out. That changes July 11 with the release of Superman. Not only is the film our first introduction to this brand-new, reimagined version of Superman, it’s our first look at what Gunn and Safran’s DC Universe looks like on the big screen. Sp

Topics: dc different gunn think universe

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James Gunn Reveals the Surprising Jor-El Casting for ‘Superman’

gizmodo.com James Whitbrook 2025-08-21 13:00:50

Christopher Nolan’s Odyssey gets its first poster. Mackenzie Davis and Charlie Heaton are set up for a new sea monster drama at Netflix. Plus, filming has wrapped on the final season of The Boys. Spoilers now! Street Fighter Deadline reports David Dastmalchian has been cast as M. Bison in Legendary’s live-action Street Fighter movie. The Odyssey A new poster has been released for Chris Nolan’s Greek epic. A film by Christopher Nolan. Shot entirely with IMAX film cameras. In theaters 7 17 26

Topics: boys different netflix story superman

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Researchers Uncover Hidden Ingredients Behind AI Creativity

news.ycombinator.com Webb Wright 2025-08-23 21:40:37

We were once promised self-driving cars and robot maids. Instead, we’ve seen the rise of artificial intelligence systems that can beat us in chess, analyze huge reams of text and compose sonnets. This has been one of the great surprises of the modern era: physical tasks that are easy for humans turn out to be very difficult for robots, while algorithms are increasingly able to mimic our intellect. Another surprise that has long perplexed researchers is those algorithms’ knack for their own, str

Topics: diffusion images just known models

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Jon Watts Left ‘Fantastic Four’ to Get His Groove Back

gizmodo.com Justin Carter 2025-08-26 12:30:24

Before Matt Shakman took over directing duties for the MCU’s first Fantastic Four movie, Jon Watts was in charge. The director of the Spider-Man: Home trilogy dropped out in 2022, and his reasons for leaving are completely valid: he had to take a much-needed break. During a recent storytelling class at the Mediterrane Film Festival, Watts revealed he was basically “out of gas” by the time he was wrapping Spider-Man: No Way Home, which was shot in the early days of the pandemic. Following the nu

Topics: difficult fantastic great make watts

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Sequence and first differences together list all positive numbers exactly once

news.ycombinator.com Unknown 2025-08-22 11:59:12

EXAMPLE Sequence reads 1 3 7 12 18 26 35 45..., differences are 2 4 5, 6, 8, 9, 10 ... and the point is that every number not in the sequence itself appears among the differences. This property (together with the fact that both the sequence and the sequence of first differences are increasing) defines the sequence!

Topics: 10 18 35 differences sequence

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New Images Show Andromeda Galaxy as You’ve Never Seen It Before

gizmodo.com Passant Rabie 2025-08-29 13:15:07

Andromeda lies 2.5 million light-years away from the Milky Way, a spiral galaxy similar to our own that has allowed scientists to better understand our galactic home. A new composite image reveals our closest galactic neighbor in five different wavelengths of light, combined together to create a stunningly detailed view of Andromeda. Telescopes capture images in different wavelengths by observing a specific part of the electromagnetic spectrum, from low-frequency radio waves to extremely high-f

Topics: andromeda data different light radio

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4Real-Video-V2: Feedforward Reconstruction for 4D Scene Generation

news.ycombinator.com Unknown 2025-09-03 17:35:33

1Snap Inc. 2KAUST 4Real-Video-V2 is capable of computing a 4D spatio-temporal grid of video frames and 3D Gaussian particles for each time step using a feed-forward architecture. Its architecture has two main components, a 4D video diffusion model and a feedforward reconstruction model. Your browser does not support the video tag. This represents a major upgrade over 4Real-Video, introducing a new 4D video diffusion model architecture that adds no additional parameters to the base video model

Topics: 4d architecture diffusion model video

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Writing toy software is a joy

news.ycombinator.com Unknown 2025-09-03 21:09:12

I am a huge fan of Richard Feyman’s famous quote: “What I cannot create, I do not understand” I think it’s brilliant, and it remains true across many fields (if you’re willing to be a little creative with the definition of ‘create’). It is to this principle that I believe I owe everything I’m truly good at. Some will tell you to avoid reinventing the wheel, but they’re wrong: you should build your own wheel, because it’ll teach you more about how they work than reading a thousand books on them

Topics: 10 difficulty like simple time

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Claude Code for VSCode

news.ycombinator.com Unknown 2025-09-06 23:07:26

Claude Code Extension for VS Code IMPORTANT: This plugin requires Claude Code to be installed separately. For more information, see claude.ai/code. Claude Code seamlessly integrates with popular Integrated Development Environments (IDEs) to enhance your coding workflow. This integration allows you to leverage Claude’s capabilities directly within your preferred development environment. Features Auto-installation: When you launch Claude Code from within VSCode’s terminal, it automatically det

Topics: claude code context diff features

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Ask HN: How can we keep (part of) the web human?

news.ycombinator.com Unknown 2025-09-07 12:57:22

Any ideas for how we can keep the web (or at least part of it) human? It feels like every time I do a web search, more and more of the results are AI generated nonsense. I'm worried that it's going to become much more difficult to find the human-generated content. How can we keep a part of the web human? Any ideas? (I'm not keen on Sam Altman’s eyeball-scanning Orb being the "solution.")

Topics: difficult generated human ideas web

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Planting flags in AI coding territory

news.ycombinator.com Unknown 2025-09-08 05:39:02

Answering this often triggers more questions that shouldn't surprise anyone. Do you have some workable requirements? Have you created meaningful tests aligned with those? Can you understand and fix your code when those tests fail? Are you seeing opportunities to delete code in a way that enhances its value by reducing its liability? In all of these questions, code is ingrained with purpose, hampered by ambiguity, and therefore very much human, even when it lies forgotten in some machine wher

Topics: ai code different human tests

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I have reimplemented Stable Diffusion 3.5 from scratch in pure PyTorch

news.ycombinator.com Unknown 2025-09-17 23:56:46

miniDiffusion miniDiffusion is a reimplementation of the Stable Diffusion 3.5 model in pure PyTorch with minimal dependencies. It's designed for educational, experimenting, and hacking purposes. It's made with the mindset of having the least amount of code necessary to recreate Stable Diffusion 3.5 from scratch, with only ~2800 spanning from VAE to DiT to the Train and Dataset scripts. -Files: The main Stable Diffusion model code is located in dit.py, dit_components.py, and attention.py. The d

Topics: attention diffusion dit model py

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Beyond GPT architecture: Why Google’s Diffusion approach could reshape LLM deployment

venturebeat.com David Chen 2025-09-18 03:48:11

Join the event trusted by enterprise leaders for nearly two decades. VB Transform brings together the people building real enterprise AI strategy. Learn more Last month, along with a comprehensive suite of new AI tools and innovations, Google DeepMind unveiled Gemini Diffusion. This experimental research model uses a diffusion-based approach to generate text. Traditionally, large language models (LLMs) like GPT and Gemini itself have relied on autoregression, a step-by-step approach where each

Topics: diffusion gemini model models tokens

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Apple's Workout Buddy Is Friendly, but What if It Could Adopt Other Personalities?

cnet.com See Full Bio 2025-09-19 20:00:06

We all have different ways of motivating ourselves to exercise, so when Apple announced Workout Buddy for the Apple Watch at WWDC 2025, it made us think about what sorts of verbal encouragement would spur us to complete our workouts. We couldn't help but imagine the different types of future Workout Buddies -- and how they might help, cajole or even bargain with us to hit our fitness goals. Workout Buddy in WatchOS 26 will be available at the outset in eight workouts (such as running and cyclin

Topics: buddy different good let workout

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Apple will at long last let you customize snooze times on alarms in iOS 26

engadget.com Unknown 2025-09-21 05:15:01

We've been covering all the news Apple announced at WWDC 2025, but possibly the most exciting element coming to iOS 26 wasn't discussed on stage. The next update to the operating system will let people set custom snooze times. MacRumors reported that iOS 26 will offer anywhere from one to 15 minute snoozes that users can select when setting the alarm. For years, Apple has kept the snooze timing locked at nine minutes. If you wanted to doze at a different interval, you'd need to set separate ala

Topics: 26 apple different ios snooze

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Google Home now lets you control your smart devices, your way

androidauthority.com Unknown 2025-09-21 16:00:40

TL;DR Google Home now lets you set up different Favorites for each device. That means you can pin the front door as a favorite on your smartwatch, while the lounge light is pinned on Google TV. This should be useful if you tend to control different smart home gadgets via specific devices. Google has just announced the stable release of Android 16, while also revealing a few features for ecosystem users. It turns out there’s a notable addition to the Google Home app as well. The search giant

Topics: different google home pin smart

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Latest Tech News

Agents built from alloys

Local cuisine was on the menu at Cafe Neanderthal

Extending That XOR Trick to Billions of Rows

The (Unfinished) PDE Coffee Table Book

Signs of autism could be encoded in the way you walk

Signs of Autism Could Be Encoded in the Way You Walk

One of our favorite Ninja air fryers is 36 percent off right now

Diffsitter – A Tree-sitter based AST difftool to get meaningful semantic diffs

Tuesday Telescope: Webb and Hubble team up to reveal spectacular star clusters

Apple just released a weirdly interesting coding language model

Optimizing Tool Selection for LLM Workflows with Differentiable Programming

A rare look inside the durability lab where Apple tortures its products

Apple just released a weirdly interesting coding language model

I want to leave tech: what do I do?

What James Gunn’s ‘Superman’ Tells Us About the Future of the DC Universe

James Gunn Reveals the Surprising Jor-El Casting for ‘Superman’

Researchers Uncover Hidden Ingredients Behind AI Creativity

Jon Watts Left ‘Fantastic Four’ to Get His Groove Back

Sequence and first differences together list all positive numbers exactly once

New Images Show Andromeda Galaxy as You’ve Never Seen It Before

4Real-Video-V2: Feedforward Reconstruction for 4D Scene Generation

Writing toy software is a joy

Claude Code for VSCode

Ask HN: How can we keep (part of) the web human?

Planting flags in AI coding territory

I have reimplemented Stable Diffusion 3.5 from scratch in pure PyTorch

Beyond GPT architecture: Why Google’s Diffusion approach could reshape LLM deployment

Apple's Workout Buddy Is Friendly, but What if It Could Adopt Other Personalities?

Apple will at long last let you customize snooze times on alarms in iOS 26

Google Home now lets you control your smart devices, your way

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