ZuoCen_Liu

9 ms·

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by ZuoCen_Liu 7mo ago
"[ Removed by moderator ] Discussion Sorry, this post has been removed by the moderators of r/LocalLLaMA."
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by ZuoCen_Liu 7mo ago
I've been obsessed with a single question: Why do "visually stunning" simulations from engines like Isaac Sim, MuJoCo, or world models like Marble often fail the moment they are deployed on real robotic hardware? The Theory:
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SIPA: Auditing Physical Integrity in World Models and Robotics(Isaac SIM,Marble)(discourse.openrobotics.org)
2 points by ZuoCen_Liu 7mo ago|1 comments
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by ZuoCen_Liu 9mo ago
I’ve spent months digging into why dexterous manipulation (like the 'Humanoid Hand' problem Musk mentions) is still so far from reality. The culprit isn't the hardware—it's the 'Discrete Tax.' Current solvers b
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Show HN: Why Nvidia's PhysX is hitting a "SIM-to-Real" wall at 5000W(github.com)
4 points by ZuoCen_Liu 9mo ago|1 comments
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by ZuoCen_Liu 9mo ago
The "Compute Wall" is a symptom of an efficiency bubble. We are currently burning through H100/H200 clusters at an unprecedented scale, yet 90% of those GPU cycles are a "waste tax." We aren't calculating intel
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Nvidia Brute-Force Bubble: Why 90% of Physics AI Compute Is a Mathematical Waste(github.com)
4 points by ZuoCen_Liu 9mo ago|1 comments
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by ZuoCen_Liu 9mo ago
The "Brute-Force" TaxWe are burning 5000W GPGPU clusters to run brute-force discrete simulations, just to "patch" the numerical gaps of Δt. This is the Discrete Cost: to get high-fidelity Sim-to-Real data, we compensate
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Show HN: 90% of GPU Cycles Are Waste. A New Computing Primitive for Physics AI(github.com)
3 points by ZuoCen_Liu 9mo ago|1 comments
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by ZuoCen_Liu 9mo ago
In short：CCD is a diagnostic patch; Octonions are an algebraic cure. One checks for crashes, the other makes physics causal by design.
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by ZuoCen_Liu 9mo ago
You are referring to Continuous Collision Detection (CCD), which has indeed existed for decades. However, CCD is a detection patch, not an integrator cure. 1. The Scaling Wall: While CCD avoids tunneling for a single pair of objects, solvin
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by ZuoCen_Liu 9mo ago
We are currently discussing a paradigm shift in physics simulation on the NVIDIA Isaac Sim repository. The core issue is that discrete time-stepping in GPGPU architectures is hitting a "Compute Wall"—consuming 5000W+ just to &quot
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Show HN: Solving the 5000W Compute Wall in Physics AI via Algebraic Continuity(github.com)
2 points by ZuoCen_Liu 9mo ago|4 comments
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Is the Root Cause Car Companies Using "19th-Century" AI Technology?(medium.com)
1 points by ZuoCen_Liu 10mo ago|0 comments
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by ZuoCen_Liu 10mo ago
Let me explain again why I said "disruptive" rather than "substantial"：the current "embodied artificial intelligence" still uses 19th-century numerical methods (the Adams-Bashforth integration method from 1883
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by ZuoCen_Liu 10mo ago
The problem lies here: the current "embodied artificial intelligence" still uses 19th-century numerical methods (the Adams-Bashforth integration method from 1883 and the Runge method from 1895) to represent time frames + three-dim
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by ZuoCen_Liu 10mo ago
I actually meant subversive intentionally. While 'substantive' would mean major progress within the current framework, I’m predicting a shift that subverts the current foundational assumptions of robotics. Right now, we treat time
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by ZuoCen_Liu 10mo ago
I see the parallel, but there’s a key difference in intent and scale. A candidate doing a practice interview is often a defensive reaction to a volatile market—a way to maintain a personal skill. A company posting 'ghost jobs' is
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by ZuoCen_Liu 10mo ago
Haha, that's unlikely.
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by ZuoCen_Liu 10mo ago
I think the primary obstacle isn't the data ingestion method, but the fact that companies treat the recruitment lifecycle as a proprietary black box. From an HR perspective, transparency is a liability, not an asset. They have zero in
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by ZuoCen_Liu 10mo ago
Therefore, for this project, we may still need to be cautious about promising "lifetime service"
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by ZuoCen_Liu 10mo ago
Single Sign-On (SSO) is not complicated, and platforms that provide services all have detailed tutorials. I don't think obtaining authentication data is useful; it's better to use it for collecting data on functional experiences.
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by ZuoCen_Liu 10mo ago
Hosting a concert to prevent workers from organizing is the ultimate 'Silicon Valley Lord' move. It’s the billionaire equivalent of 'we have pizza in the breakroom so don't ask for a raise.'
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by ZuoCen_Liu 10mo ago
As an entrepreneur, this feels like a classic case of over-engineering for a problem you haven't earned yet. Decentralized auth is a fascinating technical rabbit hole, but it introduces a massive friction point for your first 1,000 use
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by ZuoCen_Liu 10mo ago
If your solution to copyright infringement requires criminalizing the fundamental architecture of secure communication, your problem isn't the technology—it's your desire for absolute control.
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by ZuoCen_Liu 10mo ago
RSS isn't just alive; it's the only remaining protocol for deterministic content delivery. There is a fundamental philosophical divide between RSS and the current AI-driven wave that people often miss: RSS is a Push system: If I s
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by ZuoCen_Liu 10mo ago
Apple’s Japanese Compliance Strategy: Is “Safety First” Strangling Independent Educational Apps? Apple just announced sweeping changes in Japan to comply with the Mobile Software Competition Act (MSCA). While the focus is on alternative mar
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by ZuoCen_Liu 10mo ago
The 'Lifetime Service' promise feels like a strategic red flag for a product that relies on hosted relay infrastructure. Unless this is strictly a P2P tool with zero coordination server dependency (which is difficult for cross-net
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by ZuoCen_Liu 10mo ago
While I agree with MacKinnon in principle, we must acknowledge that simplicity is a luxury enabled by the surplus of compute power. > There are domains where 'cleverness' isn't just a vanity project, but a hard requirement
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by ZuoCen_Liu 10mo ago
Ghost jobs are essentially the 'vaporware' of the HR world. In any other department, misrepresenting your intent to engage in a transaction would be seen as a breach of professional ethics. The fact that it has become a standard K

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