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I've posed a question: "Does OpenAI have a better pre-train in the back pocket or not?" and looks like the answer from Mark Chen is "Yes" - so we should expect a big response from OpenAI before the end of the year. Mark Chen, OpenAI Head of Research: -...

84,628 görüntüleme • 7 ay önce •via X (Twitter)

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McLaren's Chief Designer Rob Marshall explains the new MCL40 design: “It's all new car, front to back. New regulations. As people have touched upon, the car's a bit shorter. It's actually quite a lot shorter than previous cars, a lot lighter, coupled with a brand new power unit, 50-50 hybrid, and a new set of air regulations designed to try and reduce the size of the weight behind the car, make overtaking a bit easier. If you start from the front, the new front wing is still sort of arrowhead like the previous generation, but it's a bit lower and have a much broader and wider footplate, end plate, than we used to have. And also the front wing is now actuated much like the old DRS. These new cars have got a straight line mode where both the front and rear wings will move their flaps to reduce the drag on the car and help the car get down the straights faster. There's quite a lot of freedom in how you actuate that. I think we'll see different solutions from different cars on the grid. Moving a bit further back, you've got the crash structure, which is basically from here to here. That's all new again. The regulations have changed this year where we need to make sure that after a small shunt that's enough to knock the front wing off, maybe the front half of the nose, the remaining part still serves its function as saving the driver in a secondary crash against another barrier. So that's significantly complicated the design work going into the nose. And then we've got front suspension - again, last year's front suspension was I think very innovative and so is this. We've done quite a few changes which I hope benefit us. And as we go rearward and we've got the main body of the chassis. Again, all new regulations, much tougher homologation requirements. So the crash tests and the squeezes that go into the chassis are quite brutal this year. And a lot of effort and research has gone in to try and make the car able to withstand those. Also, as I touched upon, the car is so much shorter. So a lot of the packaging of where radiators and electrical boxes, which were typically scattered around the car, finding homes for those has been very difficult. There's just less space to put them all. What's helped us there is the fuel tank is a bit smaller. We're going to use less fuel in the race. From an aerodynamic point of view, in this region here, gone are the very curved underfloors that we had with last year's cars. We're replaced with a much more flat bottom car like we had in previous generations. And then as we go rearward again, our rear suspension is actually a bit of an iteration of last year's. We're very happy with what we did last year, and so we just built upon that. Redesigned the gearbox to make it lighter and shorter for the obvious reasons. And then the rear wing is similar-ish to last year's, and the actuation mechanism is a bit like old-school DRS, but it's now mounted on two pylons, and yeah, it will now operate in conjunction with the front wing, as I said.”

naenia ¹ ⁶³ | ia

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David Sacks: “FDA for AI” is fake news, but here’s why it’s making headlines @jason: “ Who's leading Trump down the path of regulation and creating this AI FDA?” David Sacks: “I think there's several things going on here. The first one is, there's a lot of fake news. This whole idea of an FDA for AI, I don't think any senior official supports it. Certainly, I don't think that's the way the president thinks about these issues. He's the most pro-innovation president we've ever had. And the White House Chief of Staff, Susie Wiles, just put out a statement last night that I think pretty much shoots this down. Second, there's another thing going on, which is a straw manning of what the Trump administration did on AI in its first year. In the same way that they want to spin this FDA for AI, they're also trying to spin what we did as this completely laissez-faire attitude, where there'd be no regulations whatsoever, nor guardrails. It's a way of criticizing what we did. They're trying to portray it as unsafe. In fact, if you look, on March 20th, the White House released a national AI regulatory framework in which we put out a four-page bulleted list of legislation that we would support. So we have not been against every conceivable regulation or every conceivable law, we just believe that there should be specific solutions to specific problems, as opposed to a giant power grab by Washington that would squash innovation. Point number three is, there is a legitimate thing happening here with, let's call it Mythos or cyber. Within 3-6 months, all the major frontier labs, including Chinese models, will have cyber capabilities. In response to that, we do need there to be a hardening of systems, and we do need there to be a scanning of codebases to find these vulnerabilities and patch them before the hackers do it. Because the hackers will have these capabilities in a matter of months. That's a certainty. So we do need a response to that. Now, my view on what should that response be, first of all, we should want the government and the private sector to work cooperatively, and I think they are. What we should be doing, I think, is getting these tools, Mythos, and then the OpenAI model, and others like it, in the hands of our cybersecurity industry. And by the way, not just the public companies like Palo Alto Networks and CrowdStrike, although certainly they're two of the most noteworthy, but there's also some incredibly strong startups on the way up. We need to get these tools into their hands as quickly as possible because they're a force multiplier for all the companies out there that aren't that good at cybersecurity, they can use these companies as vendors. And just one last point on this whole thing is, both Anthropic and OpenAI acted responsibly here. No one was trying to release these super powerful models. So in a way, all the people who are saying that we need pre-release approvals for models, they're trying to solve a problem that didn't exist. Yes, we do have this cyber issue, but that is a problem that we will solve over the next six months. What they're trying to do is use that issue to try and create a permanent new infrastructure in Washington. The classic 'never let a crisis go to waste' strategy.”

The All-In Podcast

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New Course: Post-training of LLMs Learn to post-train and customize an LLM in this short course, taught by Banghua Zhu, Assistant Professor at the University of Washington University of Washington, and co-founder of @NexusflowX. Training an LLM to follow instructions or answer questions has two key stages: pre-training and post-training. In pre-training, it learns to predict the next word or token from large amounts of unlabeled text. In post-training, it learns useful behaviors such as following instructions, tool use, and reasoning. Post-training transforms a general-purpose token predictor—trained on trillions of unlabeled text tokens—into an assistant that follows instructions and performs specific tasks. Because it is much cheaper than pre-training, it is practical for many more teams to incorporate post-training methods into their workflows than pre-training. In this course, you’ll learn three common post-training methods—Supervised Fine-Tuning (SFT), Direct Preference Optimization (DPO), and Online Reinforcement Learning (RL)—and how to use each one effectively. With SFT, you train the model on pairs of input and ideal output responses. With DPO, you provide both a preferred (chosen) and a less preferred (rejected) response and train the model to favor the preferred output. With RL, the model generates an output, receives a reward score based on human or automated feedback, and updates the model to improve performance. You’ll learn the basic concepts, common use cases, and principles for curating high-quality data for effective training. Through hands-on labs, you’ll download a pre-trained model from Hugging Face and post-train it using SFT, DPO, and RL to see how each technique shapes model behavior. In detail, you’ll: - Understand what post-training is, when to use it, and how it differs from pre-training. - Build an SFT pipeline to turn a base model into an instruct model. - Explore how DPO reshapes behavior by minimizing contrastive loss—penalizing poor responses and reinforcing preferred ones. - Implement a DPO pipeline to change the identity of a chat assistant. - Learn online RL methods such as Proximal Policy Optimization (PPO) and Group Relative Policy Optimization (GRPO), and how to design reward functions. - Train a model with GRPO to improve its math capabilities using a verifiable reward. Post-training is one of the most rapidly developing areas of LLM training. Whether you’re building a high-accuracy context-specific assistant, fine-tuning a model's tone, or improving task-specific accuracy, this course will give you experience with the most important techniques shaping how LLMs are post-trained today. Please sign up here:

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.David Sacks: "You're gonna see in the wake of this is that a lot of Jewish people are realizing that they don't have a home on the left anymore. And I expect that many Jews are going to start shifting right into the Republican Party, to a place where I've been for a while.... But I think what's happened over the last few decades is that the civil rights movement, in particular, and the left have moved to this woke ideology where it's no longer about colorblindness. It's more about identity groups. And instead of trying to get past racial differences, it's been about accentuating them. And so we've had this whole equity agenda, which is really defined as redistribution from one racial group to another racial group. I think that, for whatever reason, a lot of Jews just hadn't confronted the reality that the left had really changed in this way. I think it goes back to the fact that they thought if we're going to be defining identity groups in this woke way, Jews obviously should be one of these victim groups, but they're waking up to the fact that Jews are not. Jews are in the minds of this woke ideology, just white people with a Jewish background. As a result, they're part of an oppressor class. And I think that a lot of Jewish people who are waking up to this are realizing this is actually a very destructive ideology, and it makes us the bad guys. So I would expect that, again, a lot of Jewish people are waking up to how the left has changed... and I would expect there to be kind of a pilgrimage now of more Jews in America towards the right, as opposed to remaining on the left where they've always been." Via The All-In Podcast:

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