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Bottom-up Policy Optimization: Your Language Model Policy Secretly Contains Internal Policies
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Multimodal Function Vectors for Visual Relations
arXiv:2510.02528v2 Announce Type: replace Abstract: Large Multimodal Models (LMMs) demonstrate impressive in-context learning abilities from few multimodal demonstrations, yet the internal mechanisms supporting such task learning remain opaque. Building on prior work of Large Language Models, we show that a small subset of attention heads in Large Multimodal Models is responsible for transmitting representations of visual relations. The activations of these attention heads, termed function...
Extraordinary fossils solve a 500-million-year mystery: Bryozoans were there at the dawn of animal life
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How Artemis II livestreamed hi-def videos and images from the moon to Earth
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Understanding LoRA as Knowledge Memory: An Empirical Analysis
arXiv:2603.01097v3 Announce Type: replace Abstract: Continuous knowledge updating for pre-trained large language models (LLMs) is increasingly necessary yet remains challenging. Although inference-time methods like In-Context Learning (ICL) and Retrieval-Augmented Generation (RAG) are popular, they face constraints in context budgets, costs, and retrieval fragmentation. Departing from these context-dependent paradigms, this work investigates a parametric approach using Low-Rank Adaptation...
Assign and Add: A Mechanistic Study of Compositional Arithmetic
arXiv:2605.31497v1 Announce Type: new Abstract: Large language models are able to compose skills in order to perform complex tasks, many of which might not have been seen during training. The details of how exactly this composition occurs remain elusive.
Big Tech's AI ambitions pose a major power test for Europe
SoftBank's plan to invest 75 billion euros in building AI infrastructure in France underscored the nation's status as a leading hub, but Big Tech's lofty energy demands will put the wider continent's grid to the test, analysts say. Japan's SoftBank on Saturday announced plans to build 3.1 GW of AI data centers in the northern Hauts-de-France region, including new sites in Dunkirk, Bosquel and Bouchain, by 2031. With over 60% of its power needs met by nuclear power, France is particularly...
Best Unlimited Phone Plan: T-Mobile, AT&T, Verizon Compared
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The Frame Problem
The Frame Problem To most AI researchers, the frame problem is the challenge of representing the effects of action in logic without having to represent explicitly a large number of intuitively obvious non-effects. But to many philosophers, the AI researchers' frame problem is suggestive of wider epistemological issues. Is it possible, in principle, to limit the scope of the reasoning required to derive the consequences of an action?
Why are cells small?
Two physical constraints — surface area and diffusion — explain why cells are so small. A human body is built from 30 trillion cells — excluding microbes — that each arise from a lone, fertilized egg. These cells come in a multiplicity of shapes and sizes, with internal volumes spanning five orders of magnitude.