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AI models know when they're being tested - and change their behavior, research shows

zdnet.com Radhika Rajkumar 2025-09-20 05:00:00

pressureUA/iStock/Getty Images Plus via Getty Images Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways Several frontier AI models show signs of scheming. Anti-scheming training reduced misbehavior in some models. Models know they're being tested, which complicates results. New joint safety testing from UK-based nonprofit Apollo Research and OpenAI set out to reduce secretive behaviors like scheming in AI models. What researchers found could complicate promising ap

Topics: model models researchers scheming training

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Google releases VaultGemma, its first privacy-preserving LLM

arstechnica.com Unknown 2025-09-24 05:04:04

The companies seeking to build larger AI models have been increasingly stymied by a lack of high-quality training data. As tech firms scour the web for more data to feed their models, they could increasingly rely on potentially sensitive user data. A team at Google Research is exploring new techniques to make the resulting large language models (LLMs) less likely to "memorize" any of that content. LLMs have non-deterministic outputs, meaning you can't exactly predict what they'll say. While the

Topics: budget data models noise training

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RustGPT: A pure-Rust transformer LLM built from scratch

news.ycombinator.com Unknown 2025-09-26 00:47:18

🦀 Rust LLM from Scratch RustGPT-demo-zoon.mp4 A complete Large Language Model implementation in pure Rust with no external ML frameworks. Built from the ground up using only ndarray for matrix operations. 🚀 What This Is This project demonstrates how to build a transformer-based language model from scratch in Rust, including: Pre-training on factual text completion on factual text completion Instruction tuning for conversational AI for conversational AI Interactive chat mode for testing f

Topics: model rs test tests training

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'How to Train Your Dragon' Remake: Release Date and Time on Peacock

cnet.com See Full Bio 2025-09-25 17:37:26

Need a live-action Night Fury in your life? The recent How to Train Your Dragon remake is hitting Peacock, so animated film fans can spend more time with the franchise's Vikings and dragons. The new version from Universal Pictures stars Mason Thames as the misfit Viking teen Hiccup, and Gerard Butler as Hiccup's dragon-loathing dad, Stoick the Vast (Butler also voices the character in the animated movie). Nico Parker plays Astrid, the tough girl Hiccup has a crush on, and Nick Frost plays the v

Topics: action dragon peacock premium train

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Many hard LeetCode problems are easy constraint problems

news.ycombinator.com Unknown 2025-09-26 23:44:05

September 10, 2025 Many Hard Leetcode Problems are Easy Constraint Problems Use the right tool for the job. In my first interview out of college I was asked the change counter problem: Given a set of coin denominations, find the minimum number of coins required to make change for a given number. IE for USA coinage and 37 cents, the minimum number is four (quarter, dime, 2 pennies). I implemented the simple greedy algorithm and immediately fell into the trap of the question: the greedy algor

Topics: buy coins constraint int var

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Many Hard LeetCode Problems Are Easy Constraint Problems

news.ycombinator.com Unknown 2025-09-27 04:44:05

September 10, 2025 Many Hard Leetcode Problems are Easy Constraint Problems Use the right tool for the job. In my first interview out of college I was asked the change counter problem: Given a set of coin denominations, find the minimum number of coins required to make change for a given number. IE for USA coinage and 37 cents, the minimum number is four (quarter, dime, 2 pennies). I implemented the simple greedy algorithm and immediately fell into the trap of the question: the greedy algor

Topics: buy coins constraint int var

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'How to Train Your Dragon' Streaming on Peacock: Release Date and Time

cnet.com See Full Bio 2025-09-28 16:19:49

Need a live-action Night Fury in your life? The recent How to Train Your Dragon remake is hitting Peacock, so animated film fans can spend more time with the franchise's Vikings and dragons. The new version from Universal Pictures stars Mason Thames as the misfit Viking teen Hiccup, and Gerard Butler as Hiccup's dragon-loathing dad, Stoick the Vast (Butler also voices the character in the animated movie). Nico Parker plays Astrid, the tough girl Hiccup has a crush on, and Nick Frost plays the v

Topics: action dragon peacock premium train

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Garmin’s Top Training Features, Explained

wired.com Brent Rose 2025-10-02 09:30:00

So, you’ve got a shiny new Garmin watch. Maybe it’s the sleek Vivoactive 6, the run-focused Forerunner 970, or (my favorite) the ultimate all-arounder Fēnix 8. You’re tracking your steps, sleep, floors climbed, calories burned—all the standard, self-explanatory stuff. But then you dig a little deeper into the menus, and it hits you: A tidal wave of data. Training Status? Acute Load? Body Battery? What the hell do these things mean? Don’t let it spike your heart rate (which the watch also tracks

Topics: body fitness load training ve

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Apertus 70B: Truly Open - Swiss LLM by ETH, EPFL and CSCS

news.ycombinator.com Unknown 2025-10-05 03:14:51

Apertus Table of Contents Model Summary Apertus is a 70B and 8B parameter language model designed to push the boundaries of fully-open multilingual and transparent models. The model supports over 1000 languages and long context, it uses only fully compliant and open training data, and achieves comparable performance to models trained behind closed doors. The model is a decoder-only transformer, pretrained on 15T tokens with a staged curriculum of web, code and math data. The model uses a new

Topics: apertus data model open training

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How big are our embeddings now and why?

news.ycombinator.com Unknown 2025-10-04 23:45:46

Sep 1 2025 #embeddings #openai #anthropic #huggingface #dimensionality A few years ago, I wrote a paper on embeddings. At the time, I wrote that 200-300 dimension embeddings were fairly common in industry, and that adding more dimensions during training would create diminishing returns for the effectiveness of your downstream tasks (classification, recommendation, semantic search, topic modeling, etc.) I wrote the paper to be resilient to changes in the industry since it focuses on fundamenta

Topics: embedding embeddings model models training

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30 minutes with a stranger

news.ycombinator.com The Pudding 2025-10-11 17:56:29

30m 0s A few months ago, I was taking the subway to work when a 16-year-old boy slipped on the subway platform and hit his chin on the ground. He stumbled onto the train and stood next to me. I kept my earbuds in and tried to convince myself this wasn’t my problem. Then out of the corner of my eye I saw that he’d split open his chin; blood and tears were gushing down his face. I looked around the train for someone else to help—maybe someone who works with kids. No one even looked up. So I grabb

Topics: chin got safe train want

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Watch out, Whoop: Polar joins the fitness band race with a premium option

zdnet.com Matthew Miller 2025-10-14 01:00:24

Image: Polar Polar launched its first heart rate monitor more than 30 years ago, setting the standard that all others have been measured against. Now, the company is bringing this technology to its line of sports watches with the Polar Loop: a health and fitness tracker with no display like the Whoop band and Amazfit Helio Strap. Without a display, the Loop instead relies on a robust smartphone platform called Polar Flow, which integrates with other Polar watches as well. Also: The best sport

Topics: flow loop polar sleep training

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Best Smart Home Gyms, as Recommended by a Fitness Expert

cnet.com See Full Bio 2025-10-14 00:46:00

What we like about it: The Tempo Studio is a smart home gym that resembles an armoire, meant to blend in with your home. It's an ideal smart home gym to own, whether you're new or experienced with strength training. The Tempo Studio's basic package comes well-equipped with two dumbbell bars, weight collars and five sets of weight plates from 1.25 to 25 pounds. The Tempo Studio is designed to hold all of its equipment neatly, so you won't need to worry about it being spread across your living ro

Topics: home strength studio tempo training

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Tesla Dojo: The rise and fall of Elon Musk’s AI supercomputer

techcrunch.com Rebecca Bellan 2025-10-14 18:18:46

For years, Elon Musk has spoken of the promise of Dojo, the AI supercomputer that was supposed to be the cornerstone of Tesla’s AI ambitions. It was important enough to Musk that in July 2024, he said the company’s AI team would “double down” on Dojo in the lead-up to Tesla’s robotaxi reveal, which happened in October. After six years of hype, Tesla decided last month to shut down Dojo and disband the team behind the supercomputer in August 2025. Within weeks of projecting that Dojo 2, Tesla’s

Topics: ai dojo musk tesla training

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Tesla Dojo: the rise and fall of Elon Musk’s AI supercomputer

techcrunch.com Rebecca Bellan 2025-10-15 09:18:46

For years, Elon Musk has spoken of the promise of Dojo, the AI supercomputer that was supposed to be the cornerstone of Tesla’s AI ambitions. It was important enough to Musk that in July 2024, he said the company’s AI team would “double down” on Dojo in the lead-up to Tesla’s robotaxi reveal, which happened in October. After six years of hype, Tesla decided last month to shut down Dojo and disband the team behind the supercomputer in August 2025. Within weeks of projecting that Dojo 2, Tesla’s

Topics: ai dojo musk tesla training

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Tesla’s Dojo, a timeline

techcrunch.com Rebecca Bellan 2025-10-15 09:39:01

Elon Musk doesn’t want Tesla to be just an automaker. He wants Tesla to be an AI company, one that’s figured out how to make cars drive themselves. Crucial to that mission was Dojo, a custom-built supercomputer designed by Tesla to train its Full Self-Driving (FSD) neural networks. FSD isn’t actually fully self-driving; it can perform some automated driving tasks, but still requires an attentive human behind the wheel. But Tesla thinks with more data, more compute power and more training, it ca

Topics: ai dojo musk tesla training

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The Default Trap: Why Anthropic's Data Policy Change Matters

news.ycombinator.com Unknown 2025-10-18 06:12:06

Read the terms of service. Don’t make assumptions. Don’t pick defaults. Yesterday, Anthropic quietly flipped a switch. If you're a Claude user, your conversations are now training data unless you actively say no. Not when you give feedback. Not when you explicitly consent. By default, from day one. Here's what changed: Previously, Claude didn't train on consumer chat data without your explicit thumbs up or down. Clean, simple, respectful. Now? Everything you type becomes model training fodder

Topics: ai claude data defaults training

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With new in-house models, Microsoft lays the groundwork for independence from OpenAI

arstechnica.com Unknown 2025-10-19 05:49:54

Microsoft has introduced AI models that it trained internally and says it will begin using them in some products. This announcement may represent an effort to move away from dependence on OpenAI, despite Microsoft's substantial investment in that company. It comes more than a year after insider reports revealed that Microsoft was beginning work on its own foundational models. A post on the Microsoft AI blog describes two models. MAI-Voice-1 is a natural speech-generation model meant to deliver

Topics: ai microsoft model models trained

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Anthropic Wants to Use Your Chats With Claude for AI Training: Here's How to Opt Out

cnet.com See Full Bio 2025-10-21 04:51:00

Anthropic will soon begin using your chat transcripts to train its popular chatbot, Claude. The announcement came on Thursday as an update to the company's Consumer Terms and Privacy Policy. New users will see an option to "Help improve Claude" that can be toggled on or off as part of the sign-up flow, where existing users will begin to see a notification explaining the change. Users have until Sep 28 to opt out of the new change, as it will be enabled by default. You can still turn the option

Topics: claude new privacy training users

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Anthropic agrees to settle copyright infringement class action suit - what it means

zdnet.com Nina Raemont 2025-10-24 09:48:00

Anadolu / Contributor / Anadolu via Getty Images Follow ZDNET: Add us as a preferred source on Google. ZDNET key takeaways Anthropic is settling a class action lawsuit with three authors. The authors claim Anthropic trained AI on their pirated work. The future of AI and fair usage is still unclear. AI startup Anthropic has agreed to settle a class action lawsuit against three authors for the tech company's misuse of their work to train its Claude chatbot. Also: Claude wins high praise fro

Topics: ai anthropic authors claude train

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The 10 Best Horror Movies on Netflix Right Now

gizmodo.com Cheryl Eddy 2025-10-26 16:00:17

You’ve already watched every available episode of Wednesday—and every installment of Trainwreck too. Keep the frights flowing with the 10 best horror movies streaming on Netflix right now. The Texas Chain Saw Massacre If the recent trailer for the documentary Chain Reactions gave you a longing to revisit Tobe Hooper’s 1974 classic, Netflix has you covered. Just make sure you click on the original, giving the 2022 made-for-Netflix remake the widest berth possible. Watch on Netflix. Barbarian

Topics: follows horror netflix train watch

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Beyond GDPR security training: Turning regulation into opportunity

bleepingcomputer.com Unknown 2025-10-26 20:00:10

By Eirik Salmi, System Analyst at Passwork Even though 88% of businesses spend over €1 million on GDPR compliance and 40% invest up to €10 million, 80% of their employees still ignore basic password security practices. The formal risk is obvious: GDPR fines can reach up to €20 million or 4% of global annual turnover. The informal one is quieter but often far more damaging: lost trust, declining customer loyalty, and disrupted operations. In 2024, European regulators issued fines exceeding €1.2

Topics: gdpr password real security training

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Study shows which vehicles pollute the least in every US county

arstechnica.com Unknown 2025-10-28 16:07:05

Greenhouse gas reduction is no longer a priority for the US government, but if you're looking for a new vehicle and want to buy something with the lowest life cycle carbon emissions, you're best off looking for a compact with a small battery. That's one of the findings of a comprehensive study from a group at the University of Michigan that calculates the overall cradle-to-grave carbon impact for different types of vehicles, including factors like powertrain options, location (within the country

Topics: battery mile percent pickup powertrains

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Best Heart Rate Monitors (2025), WIRED Tested and Reviewed

wired.com Michael Sawh 2025-10-29 13:30:00

Compare Top 5 Heart Rate Monitors FAQS We tested and recommend all of the heart rate monitors below, which do a pretty impeccable job. But what do all these terms mean? Heart rate zones: If someone tells you they’ve been doing 80/20 training, they’ve been doing heart rate zone-based workouts. Heart rate zones are an easy way to break down your range of effort during exercise. Zones go from 1 to 5, with 5 indicating working at 90 to 100 percent of your maximum heart rate. Zone 2 represents tra

Topics: heart maximum monitors rate training

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Swiss vs. UK approach to major tranport projects

news.ycombinator.com Unknown 2025-11-13 21:50:13

Start with the timetable So, let’s imagine the UK had done this in 2008. What might the planners have noticed? Well, first up, they'd have spotted that our major cities need more frequent and faster rail connections from suburbs to centres and that these are prevented at the moment by insufficient platform capacity in stations like Leeds, Manchester Piccadilly and Birmingham New Street. So we need more station capacity in our city centres. They'd have identified that many suburban lines into

Topics: capacity need new trains west

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What's the strongest AI model you can train on a laptop in five minutes?

news.ycombinator.com Unknown 2025-11-13 17:15:34

What’s the strongest model I can train on my MacBook Pro in five minutes? I’ll give the answer upfront: the best 5-minute model I could train was a ~1.8M-param GPT-style transformer trained on ~20M TinyStories tokens, reaching ~9.6 perplexity on a held-out split. Here’s an example of the output, with the prompt bolded: Once upon a time, there was a little boy named Tim. Tim had a small box that he liked to play with. He would push the box to open. One day, he found a big red ball in his yard.

Topics: minutes model tokens train training

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Faster NextGen Acela Trains Are Coming to the U.S. at the Worst Time

gizmodo.com David Alff 2025-11-18 22:55:33

When former President Joe Biden unveiled his US$1.9 trillion infrastructure plan in 2021, he found the perfect place to go public: Philadelphia’s 30th Street Station rail yard. Over the din of crackling wires and grumbling engines, the president made his case for revitalizing the country’s roads, ports, airports and rail lines. Behind Biden sat rows of gleaming Amtrak trains. Among them was a prototype of NextGen Acela, a sleek machine engineered to deliver the fastest passenger service in Ame

Topics: acela amtrak new rail trains

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Is Chain-of-Thought Reasoning of LLMs a Mirage? A Data Distribution Lens

news.ycombinator.com Unknown 2025-11-21 08:52:47

Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. These simplified models were then tested using a variety of tasks, some of which precisely or closely matched the function patterns in the training data and others that required function compositions that were either partially or fully "out of

Topics: answers credit data researchers training

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LLMs' "simulated reasoning" abilities are a brittle mirage

news.ycombinator.com Unknown 2025-11-22 08:52:47

Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. These simplified models were then tested using a variety of tasks, some of which precisely or closely matched the function patterns in the training data and others that required function compositions that were either partially or fully "out of

Topics: answers credit data researchers training

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LLMs’ “simulated reasoning” abilities are a “brittle mirage,” researchers find

arstechnica.com Unknown 2025-11-23 17:16:46

Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. Credit: Zhao et al The researchers used test cases that fall outside of the LLM training data in task type, format, and length. These simplified models were then tested using a variety of tasks, some of which precisely or closely matched the function patterns in the training data and others that required function compositions that were either partially or fully "out of

Topics: answers credit data researchers training

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Latest Tech News

AI models know when they're being tested - and change their behavior, research shows

Google releases VaultGemma, its first privacy-preserving LLM

RustGPT: A pure-Rust transformer LLM built from scratch

'How to Train Your Dragon' Remake: Release Date and Time on Peacock

Many hard LeetCode problems are easy constraint problems

Many Hard LeetCode Problems Are Easy Constraint Problems

'How to Train Your Dragon' Streaming on Peacock: Release Date and Time

Garmin’s Top Training Features, Explained

Apertus 70B: Truly Open - Swiss LLM by ETH, EPFL and CSCS

How big are our embeddings now and why?

30 minutes with a stranger

Watch out, Whoop: Polar joins the fitness band race with a premium option

Best Smart Home Gyms, as Recommended by a Fitness Expert

Tesla Dojo: The rise and fall of Elon Musk’s AI supercomputer

Tesla Dojo: the rise and fall of Elon Musk’s AI supercomputer

Tesla’s Dojo, a timeline

The Default Trap: Why Anthropic's Data Policy Change Matters

With new in-house models, Microsoft lays the groundwork for independence from OpenAI

Anthropic Wants to Use Your Chats With Claude for AI Training: Here's How to Opt Out

Anthropic agrees to settle copyright infringement class action suit - what it means

The 10 Best Horror Movies on Netflix Right Now

Beyond GDPR security training: Turning regulation into opportunity

Study shows which vehicles pollute the least in every US county

Best Heart Rate Monitors (2025), WIRED Tested and Reviewed

Swiss vs. UK approach to major tranport projects

What's the strongest AI model you can train on a laptop in five minutes?

Faster NextGen Acela Trains Are Coming to the U.S. at the Worst Time

Is Chain-of-Thought Reasoning of LLMs a Mirage? A Data Distribution Lens

LLMs' "simulated reasoning" abilities are a brittle mirage

LLMs’ “simulated reasoning” abilities are a “brittle mirage,” researchers find

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