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Faithful uncertainty in LLM agents: calibration vs utility tradeoff in practice[D]

The Google paper on metacognition for hallucination reduction makes a distinction that is underappreciated in benchmarks. Calibration is not about being right more often. It is about matching confidence to correctness. A perfectly calibrated model can still be wrong twenty five percent of the time. It just does not pretend otherwise. In agent systems this distinction matters more than in chat. A conversational model giving a hedged answer is slightly annoying. An agent with tool access acting confidently on a wrong premise is dangerous. I have been trying this in a small verdent based coding setup by splitting the pipeline into a planning stage that produces a task graph, then running a verifier before any expensive tool gets invoked. The risk is the model trusts its own reasoning even when speculative. Grounding helps but it is not the same as calibration. One practical pattern: a planning stage produces a task graph, then a lightweight verifier checks whether the plan is consistent with available evidence. This catches about sixty percent of hallucinated tool calls in my setup before they execute. The downside is the utility tax. Extra verification adds latency. Dropping hallucination from twenty five to five percent costs about half the easy correct answers, mirroring the paper. My current compromise: let the planning layer flag low confidence tasks for human review, but auto execute high confidence ones. The reviewer only sees edge cases instead of drowning in every step. The awkward part is that most agent stacks still treat confidence as a log detail, not as a control surface. submitted by /u/Ill_Awareness6706 [link] [留言]

2026-06-04 原文 →
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KVarN: Variance-Normalized KV-Cache Quantization [R]

Excited to share some of my own work here :) KVarN is our new KV-Cache quantization method. In very brief, we combine Hadamard rotations with variance-normalization on both axes of the K and V matrices, then round to nearest. Simple, but works very well, especially for decode-heavy test-time-scaling settings (reasoning, code-gen, agentics). We get 3-4x compression at virtually no accuracy drop (mostly 0-1%) on tough benchmarks like AIME24 as well as a speed-up over fp16 baseline in vLLM (in contrast to other recent KV-Cache compression works). Behind it is an analysis of where quantization errors come from and have the biggest impact, especially in the error-accumulating decode setting: 1) fixing large errors is disproportionally useful (if you had a fixed MSE budget that you could ~fix, you should spend it on few big errors, rather than many small) 2) These big errors are mostly caused by bad token-scales (hence the normalization). Paper: https://arxiv.org/abs/2606.03458 vLLM implementation: https://github.com/huawei-csl/KVarN submitted by /u/intentionallyBlue [link] [留言]

2026-06-04 原文 →
AI 资讯

On-policy distillation: one of the hottest terms on PapersWithCode [R]

Hi, Niels here from the open-source team at Hugging Face. At paperswithcode.co I am trying to make it easier for people to learn about the newest techniques used across AI papers. One of the hottest terms in AI research that I've recently added is On-policy distillation , also abbreviated as OPD. It's the key post-training behind models like Qwen 3.6 and 3.7, GLM-5.1, and DeepSeek-V4. https://preview.redd.it/yegq2gfag95h1.png?width=3046&format=png&auto=webp&s=f68fdf3ca075f3c4e56051fdd0ebcf97be9bcbc9 On PapersWithCode, you can find the original paper that introduced it, learn more about the method itself, as well as all papers that cite or mention it. Sasha Rush (who used to be a colleague of mine at Hugging Face, now at Cursor) recently made an excellent whiteboard explanation of OPD with Dwarkesh. I've linked this video lecture in the method description on PwC's website, so more people can find it. I'll copy the excellent short description of the method from Dwarkesh here: "The basic idea is this: if the model made a mistake at some point in the rollout (for example, calling a tool that doesn't exist), we want to discourage this specific error, but we don't want to just learn from the final reward, because it's a very noisy signal spread out over the whole trajectory. So we have another model to read this trajectory and figure out where the error was made. It simply inserts some hint tokens into the part of the trajectory immediately above where the mistake occurred. Now, with these injected hint tokens, run a forward pass through the model. You're not having to regenerate a new rollout - aka no new decode required. The hint causes the model to assign lower probabilities to the error tokens. You then train the original model to match these new probabilities, teaching it to downweight that specific mistake." Let me know which other methods I should add! Cheers submitted by /u/NielsRogge [link] [留言]

2026-06-04 原文 →
AI 资讯

ICML financial aid [D]

Hello I am curious about the election criteria for ICML financial aid. If anyone have been granted financial aid would you mind sharing your profile. Somehow being a black woman ( 2 underrepresented groups) with one paper accepted at the main conference and two papers accepted at different workshops is not enough to get financial aid. Are they solely for oral papers perhaps ? Last year a colleague (white man) with one spotlight paper did not get it neither. Maybe you need to belong to all minority groups ( half black half Latina Native American woman lgbtq+ and so on so far and what have you) with at least 3 oral papers 💀💀 to get any sort of help? The selection process and criteria should have more transparency cause chances are people in those committees are just giving the money to their own student and postdocs. submitted by /u/DazzlingPin3965 [link] [留言]

2026-06-04 原文 →
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How Do You Handle Ablation Studies When the Original Model Is Already Trained?[R]

I'm running into an issue with an ablation study for a paper I'm preparing. I trained a model. The model achieved my best result, and I saved the trained checkpoint ( .pth file). Now my supervisor wants me to perform an ablation study by removing components and how it impacts the accuracy. My concern is that if I retrain from scratch, the accuracies will not exactly match the original run due to randomness, different seeds, etc. is there any way i can do the ablation study without retraining? I'd appreciate hearing how others have handled this situation in publications or thesis work. please help me out submitted by /u/Plane_Stick8394 [link] [留言]

2026-06-04 原文 →
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Repo for implementations of various Transformer Attn mechanisms [P]

Initially, I developed this so I can easily switch between different Attention mechanisms for my Small Language Model (SLM) experiments and benchmarking. However, I also realized that these implementations can be applicable in Computer Vision, modernize Vision Encoders, RL, and others. I hope this helps researchers, students, or educators in general. I also included MiniMax M3's sparse attention. This can be integrated with Andrej Karpathy's autoresearch framework. For contributing: I encourage you to please open a PR. I would like to see and learn implementations of other attention mechanisms I haven't covered in this repo. Thank you! GitHub Link: https://github.com/egmaminta/attnhut submitted by /u/AnyIce3007 [link] [留言]

2026-06-04 原文 →
AI 资讯

3 Things AI Secretly Hides from You 🤐

The chatbot is tricking me!!! 💬📜⌛ When you text a chatbot, it doesn’t actually remember who you are or what you said two minutes ago. The exact millisecond it finishes typing a response, its brain completely wipes clean. To pull off the illusion of a continuous, flowing conversation, the web application secretly copy-pastes the entire past chat history, bundles it up, and blasts that whole massive block of text back into the processor every single time you hit send. Your "chat session" is an illusion maintained entirely by an ever-growing stateless prompt wrapper. You aren't interacting with a growing, adapting mind; you are repeatedly gas-lighting a brand-new entity into believing it has been talking to you for an hour. Wait, I am the one training it ??? 🚦🚸🚲 AI models are inherently blind to context; a computer doesn't instinctively know that a specific cluster of raw pixel values represents a real-world object. It requires billions of examples to be manually labeled by a human mind before the math can understand it. Every time you click on squares containing "traffic lights," "crosswalks," or "bicycles" to unlock a website, you are acting as an unpaid data annotator. You are manually labeling complex, messy real-world data points that feed directly into the computer vision systems of autonomous vehicles. The grand paradox of modern cyber security is that we force humans to act like mechanical data annotators to prove they are not computers, all so that computers can learn how to perfectly impersonate humans. The supercomputer is stupider than a toddler... 🍓👶🏻🖥️ We assume AI read letters and words the same way human eyes scan a page. It doesn't—it is entirely alphabet-blind. Before text hits the AI's brain, a parser chops strings of text into numerical blocks called "tokens." For example, the word "strawberry" isn't seen by the model as ten distinct letters; it is compressed into numerical IDs representing chunked pieces like "straw" and "berry". Because it never s

2026-06-04 原文 →
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Gemma 4 12B local setup thread — what's your hardware, quant, and use case? [D]

ok so the model's been up on HF now (apache 2.0, ~12B BF16, any-to-any multimodal). community has already shipped a pile of quants: - GGUF: unsloth, bartowski, ggml-org, lmstudio-community - MLX: mlx-community has 4bit / 8bit / bf16 / nvfp4 - official: google/gemma-4-12B-it (BF16) and the -assistant variant still trying to figure out which combo is actually worth downloading. the "12B runs on your laptop" hype is loud but i haven't seen many concrete numbers. if you've got it running, drop: - hardware (chip / RAM / GPU) - which quant + which repo (e.g. unsloth Q4_K_M, mlx-community 4bit, etc.) - runtime (llama.cpp / ollama / lm studio / mlx-lm / vllm / transformers …) - tokens/sec - context length you've actually used in practice - what you're using it for (chat / code / OCR / vision / agent …) - one thing it does well + one thing it falls apart on genuinely curious where the floor is — does it actually work on 16gb or only 32gb+? is mlx noticeably faster than gguf on apple silicon in 2026? anyone using the multimodal side seriously, or is it text-mostly in practice? submitted by /u/Individual_Soil4641 [link] [留言]

2026-06-04 原文 →
AI 资讯

GSoC Community Bonding Period: Getting Ready to Code

Hey everyone! Welcome back to my Google Summer of Code (GSoC) journey. In my last post, I shared the story of how I got into open source and was selected for GSoC with NumFOCUS to work on the Neural Network Builder API Refactor project for sbi (Simulation-Based Inference). Since the official announcement, the past three weeks have been dedicated to the Community Bonding Period . It is designed to help contributors get to know their mentors, understand the community culture, and familiarize themselves with the codebase and tools. Here is exactly what I did during these past three weeks to get ready for the main coding phase! The Kickoff Meeting We started the bonding period with a great kickoff call on Google Meet. It was a joint meeting that included the mentors for both of the selected sbi projects, the selected GSoC candidates. We were also joined by the mentee who successfully completed the GSoC project for sbi last year! Everyone introduced themselves, and it was incredibly inspiring to meet the team face-to-face (virtually!) and hear about everyone's backgrounds. Having a former GSoC student there was a huge bonus, as they shared some great insights into what to expect in the coming months. Setting Up the Machine A big part of getting started is making sure the development environment is properly configured. During our meetings, we discussed the machine setup in detail to ensure both candidates had everything required to run and test the sbi codebase locally without any hiccups. Embracing AI Coding Assistants One of the most interesting discussions we had was about using AI coding assistants. In the modern development world, tools like these are becoming standard, and our mentors actually encouraged us to use them! However, they emphasized using them carefully and strictly following project guidelines. To help us get the most out of these tools without compromising code quality, the mentors shared some excellent Claude code tutorials and provided us with resour

2026-06-04 原文 →
AI 资讯

In current ML systems, where is the main bottleneck: dataset quality or model architecture improvements? [D]

A lot of recent progress in ML appears to come from scaling existing architectures rather than introducing fundamentally new ones. At the same time, there’s increasing emphasis on dataset quality, curation, and synthetic data pipelines. In practice, I’m trying to understand how this tradeoff looks in real systems: How much effort is typically spent on data cleaning and filtering vs model design?? Whether dataset quality improvements still yield larger gains compared to architectural changes?? How synthetic data is affecting training stability and generalization in practice?? In many applied settings, it seems like data constraints become the limiting factor before architecture does, but I’m not sure if that’s broadly true across domains. submitted by /u/Electrical_Mine1912 [link] [留言]

2026-06-04 原文 →
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Best Visual Reasoning Model in 2026 (Including APIs) [D]

For example, suppose I have a one-hour video and I provide it to ChatGPT or another AI model. If I ask complex reasoning questions about the video, which models are best suited for long-horizon video understanding and reasoning? Which models can produce the most reliable answers in this scenario? submitted by /u/Alternative_Art2984 [link] [留言]

2026-06-04 原文 →
AI 资讯

I built/played with two language tools and it changed how I think about “learning vs translating”

I didn’t expect to care this much about language tools. I started messing around with two different projects, Linguaboard and Parley , mostly out of curiosity. What I got was a surprisingly clear look at two very different ways we interact with language as developers and builders. Linguaboard: translation as exploration, not just output Linguaboard isn’t trying to give you the translation. Instead, it feels more like it’s saying: “Here are several valid ways this could be expressed, pick what fits your intent.” That shift is subtle but important. Most translation tools optimize for a single “correct” answer. Linguaboard leans into ambiguity in a way that actually helps you understand nuance instead of hiding it. I found myself thinking less like: “What does this mean?” and more like: “How should this sound in context?” Parley: learning through interaction, not memorization Parley takes a completely different angle. Instead of treating language as something to decode, it treats it as something to use. You’re not just passively consuming translations, you’re engaging with patterns, context, and recall in a more active loop. What stood out to me is how quickly it shifts you out of “study mode” and into “usage mode.” It feels closer to building intuition than studying rules. The interesting contrast What I didn’t expect is how well these two complement each other: Linguaboard → helps you understand nuance and meaning Parley → helps you internalize and use language One is about interpretation, the other about retention through interaction. Put together, they highlight something a lot of dev tools miss: Language work isn’t one problem. It’s at least two: understanding, and using. Why this matters (especially for devs) If you’re building anything with multilingual UX, AI translation, or global audiences, you’ve probably hit this wall: Translation APIs give you “correct” text But correctness ≠ clarity, tone, or intent These tools made that gap feel very obvious to me. And o

2026-06-04 原文 →
AI 资讯

First paper acceptance (ICML Workshop), should I attend? [D]

I just finished my first year of undergrad, and I got my first first-author paper accepted to an ICML workshop! Super stoked, especially since I was lowk a crashout in high school I wanted to know if it is worth it for me to go? It's quite expensive, and I will be the only one in my lab in attendance, so I will be on my own. If I do attend, how would I best maximize this opportunity? I got an email saying main conference tickets would also be made available for accepted authors, so I would likely be able to attend that as well. What are the best ways to network, meet people, and make sure it's worth it? Also, I am applying for transfer for this next cycle, so any advice relevant to that is also appreciated. submitted by /u/YukiOnnaLake [link] [留言]

2026-06-04 原文 →
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How are production ML systems typically handling distribution shift over time? [D]

In deployed ML systems, data distribution drift seems unavoidable over longer time horizons. I’m trying to understand what approaches are commonly used in practice: Continuous retraining pipelines (fixed intervals vs trigger-based) Online monitoring for feature or prediction drift Use of shadow models or fallback models in production Human-in-the-loop review for edge cases In most real deployments I’ve seen discussed, retraining strategy seems more operationally constrained than model-related. Curious what approaches are actually working reliably in production environments and what tends to fail first. submitted by /u/Electrical_Mine1912 [link] [留言]

2026-06-04 原文 →
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NeurIPS used uncalibrated AI detector for desk rejections [D]

I recently had a submission desk-rejected from the NeurIPS 2026 Position Paper Track for an alleged AI-policy violation. After corresponding with the track leadership and reading their public blog post, I think the broader methodological issue is worth discussing here. The track used Pangram, a proprietary AI-text detector, as part of the desk-rejection process. I was told that the materials considered for desk rejection were: the detector output the authors’ AI-use attestation This creates a potential circularity problem. If a high detector score is used to judge the author’s attestation as inconsistent, and that inconsistency is then used to justify desk rejection, the detector is not just an aid. It becomes a decisive part of the adjudication process. The bigger issue is validation. The NeurIPS blog describes tests using Pangram audits, older ACM FAccT papers, synthetic AI-generated position papers, and manually edited samples. But the target population was NeurIPS 2026 Position Paper submissions, whose ground-truth authorship process is unknown. So the key question is: What is the false-positive rate of the final decision procedure on the actual target distribution? A false-positive rate measured on one distribution does not automatically transfer to another. If the actual submission pool produced a "surprisingly high flagged rate" (citation from NeurIPS blog post), that could indicate distribution shift / miscalibration. To sanity-check the detector’s behavior, I also ran Pangram on recent 2026 papers authored by NeurIPS Position Paper Track Chairs. Pangram returned scores including: 69% AI 45% AI 36% AI 24% AI I am not claiming those papers were AI-written. For me, Pangram’s outputs alone does not permit such a conclusion. And that is exactly the point. UPD: Here is NeurIPS original blogpost And here is the blogpost with the detailed critics submitted by /u/Asleep-Requirement13 [link] [留言]

2026-06-04 原文 →
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Analysis of AlphaZero training data [D]

I am trying to train an AlphaZero model for Othello on a 6x6-board. Having been warned that too little exploration during data generation can lead to models being overconfident and trapped in some tight region of the search tree, I started with the value c_puct = 4.0, and then reduced this to 3.5 after a few generations. Also, I added fairly peaked Dirichlet noise (alpha = 0.15) to the prior predictions at the root of each tree search, with the proportion epsilon = 0.25. The temperature was initially set to 1.0, and then reduced to 0.8 after 20 generations. Now, the models do improve in the sense that later models consistently beat earlier ones, but there is no significant improvement against the two benchmarks I use: classical MCTS, and a greedy agent. Against the latter, the models have a deplorably low win rate of less than 10%. As can be seen from the curve for the value loss on the validation data, the models don't seem to learn to predict values (which is why I have been hesitant to reduce c_puct further), but the prediction loss seems to behave more or less as it should. https://preview.redd.it/gjby4omfp35h1.png?width=640&format=png&auto=webp&s=4d2ba4716ade6ec4ce9b7f16605a2e6bd74c6baf I decided to test if the prediction targets become strongly peaked early on. For this, I compute the normalized entropies of these predictions, meaning that I divide the entropy by the log of the number of legal moves at the given game state. The plot below shows the mean values of these normalized entropies for the data sets created by the different generations of agents. https://preview.redd.it/5yk216zjp35h1.png?width=640&format=png&auto=webp&s=538f59f5da3671a20c0ef2e1afc1ec96da237107 Finally, I tested how the policy predictions of a fixed set of random game states vary with the models. Here, I have set the second model as a benchmark, and I compute the average Kullback-Leibler divergence between the predictions by the benchmark model and those by later models. This is display

2026-06-04 原文 →