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A Broader Look into MLLM's Retrieval Heads

arXiv cs.CL ↗ · 3d ago

本文研究多模态大模型中的检索头机制如何随输入模态扩展,发现跨模态共享的检索头虽不足2%,却对文档理解、空间感知等至关重要,并通过排序目标优化这些注意力头,将Qwen3-VL-8B在MMDocIR上的页面Recall@1提升了6.03个点。

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#attention

LazyFlash: Forward-Dense, Backward-Sparse Attention for Accelerated Long-Context Fine-Tuning

arXiv cs.CL ↗ · 3d ago

LazyFlash 提出一种前向稠密、后向稀疏的注意力机制,通过梯度感知的块稀疏化在保持模型性能的同时,实现最高 5.7x 的注意力反向加速和 1.7x 的端到端训练加速,适用于长上下文 LLM 微调。

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#attention

How Does Orthogonalization Adapt to the Neural Network Hessian Structure? A Gradient Self Outer-Product Analysis at Initialization

arXiv cs.LG ↗ · 2026-10-22 Cached

The paper provides an asymptotic theory explaining why Muon's orthogonalization preconditioner matches the neural network Hessian structure at initialization, showing that overparameterization drives diagonal dominance of E[GG^T] across four canonical models.

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#attention

Transformers as Generic Deep Neural Networks: Exact Compilation, the Cost of Removing Activation-Activation Products, and Multi-Agent Attention Clustering

arXiv cs.LG ↗ · 2026-10-22 Cached

该论文证明每个 Transformer 块都可精确编译为由固定仿射映射、路由及 sigmoid/逆平方根等基本算子构成的通用深度神经网络,量化分析了去除激活-激活乘积的代价,并提出多智能体注意力聚类方法将打分复杂度从 N² 降至 Nk,实验在 DeiT-Tiny、MambaIRv2-Light 和 Pythia-70M 上验证了编译模型与原模型一致且标准后训练量化可直接适用。

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#attention

LEAF: LUT-aware Efficient Attention on FPGAs

arXiv cs.LG ↗ · 2026-10-21 Cached

LEAF 提出首个 LUT 感知的 Transformer/linformer 架构,面向 FPGA 上的超低延迟推理,在喷注标记基准上以更少 LUT 资源实现更高精度,适用于 CERN 等实时系统。

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#attention

Transformers Learn Two Competing Sorting Algorithms, and Only One Length-Generalizes

arXiv cs.LG ↗ · 2026-10-21 Cached

UC Berkeley, Apple, EPFL, Harvard, MIT, and Google DeepMind researchers show that two-layer transformers trained on sorting converge to one of two mechanistically distinct solution classes depending on initialization, where only the two-attention-layer solution length-generalizes perfectly.

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TokenGate: Adapting LLMs for Fast and Memory-Efficient Prefill with Learned Token Pruning

Hugging Face Daily Papers ↗ · 2026-10-19 Cached

TokenGate 是一个轻量级可学习的 token 剪枝模块,通过 token-gated attention 机制在长上下文预填充阶段跳过不重要的 token,实现 1.4–11.3 倍的 TTFT 加速和 1.5–3.4 倍的峰值内存降低且无精度损失。

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#attention

Focused Omni-Modal GUI Agents

Hugging Face Daily Papers ↗ · 2026-10-19 Cached

The paper introduces FocusGUI, a lightweight adapter that dynamically selects relevant multimodal evidence for GUI agents to prevent compounding errors from irrelevant context, improving action accuracy without fine-tuning the backbone.

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#attention

Can we change an AI model's architecture without retraining it from scratch? (14 minute read)

TLDR AI ↗ · 2026-10-13 Cached

AWS researchers introduce 'priming,' a method that converts pre-trained Transformers into hybrid state-space architectures without full retraining, cutting pretraining costs by over 99% and releasing primed 8B and 32B model checkpoints.

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#attention

Time Delay System for Sequence Modeling

arXiv cs.CL ↗ · 2026-10-12 Cached

该论文提出一种基于非线性时间延迟系统的序列建模框架,通过可微语义延迟估计器、对角状态空间的闭式 O(1) 解以及可解释的模糊语义调制机制,在文本分类和生成任务上超越了现有最先进方法。

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#attention

HART: Hybrid Attention-RWKV Time series Foundation Model

arXiv cs.LG ↗ · 2026-10-12 Cached

论文提出 HART,一种混合注意力与 RWKV 的时间序列基础模型,通过交替注意力和 RWKV 模块解决非自回归多步预测中 RWKV-7 的长程退化问题(Placeholder Idling Decay)。仅用 36M 参数(约为 Toto-2.0-1B 的 1/28)在 GIFT-Eval 上达到可媲美的长程 MASE(0.752 vs 0.754)。

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#attention

Kronecker Product Attention: Memory-Efficient KV Compression via Structured Factorization

arXiv cs.LG ↗ · 2026-10-12 Cached

提出 Kronecker Product Attention (KPA),用 Kronecker 积紧凑矩阵因子表示键值激活,实现最高 10× 的 KV 缓存压缩,同时在多个模型规模和基准上匹配或超越 TPA、MQA、GQA 和 MLA 等方法。

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#attention

Attention Sees, MLP Refuses: Tracing the Attention-to-MLP Safety Pathway in LLMs

arXiv cs.AI ↗ · 2026-10-12 Cached

该论文研究安全对齐大模型中注意力与MLP模块在有害性识别与拒绝生成中的不同作用路径,提出结合注意力感知分数与MLP决策分数的Sentinel方法,以更准确地区分越狱与过度拒绝行为。

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#attention

AReA: Adaptive Receptive-Field Attention for Efficient High-Resolution Diffusion Transformers

Hugging Face Daily Papers ↗ · 2026-10-12 Cached

提出AReA:一种训练自由的注意力机制,其感受野随去噪过程从粗到细自适应演化,用于实现高效高分辨率Diffusion Transformer图像生成,在多个分辨率和模型上超越现有无训练基线且更快速。

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#attention

Multics: Generative Multi-Player World Model with Hierarchical Communication

Hugging Face Daily Papers ↗ · 2026-10-12 Cached

Multics 提出一种具有层级通信机制的多玩家视频生成世界模型,在玩家、组和全局层面结构化信息交换,以 SOTA 性能实现 4-6 玩家设置下的跨玩家一致性,并能零重训泛化到 10 玩家推理。

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#attention

@uudonX: "Chinese-English Bilingual Subtitles" This is the clearest, most in-depth course I've ever seen on how ChatGPT and Clau…

X AI KOLs Timeline ↗ · 2026-10-09 Cached

推文推荐斯坦福大学的免费 LLM 课程(含中英双语字幕),称其为讲解 ChatGPT 与 Claude 底层构建原理最清晰、最深入的课程,能帮助学习者真正理解 tokenization、Attention 等核心机制而非停留在记住名词。

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#attention

Rethinking the Tradeoff Between Temporal Encoding and Nonlinear Computation in Spiking Language Models

arXiv cs.LG ↗ · 2026-10-09 Cached

该论文提出 Spora,联合设计脉冲编码与注意力算子,通过 Unipolar Binary Spiking (UBS) 和 Bipolar Binary Spiking (BBS) 在少时间步下实现更高容量的连续语义表示,在 GLUE 基准上超越 SpikeLM。

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#attention

Multi-Stream Attention Residuals

Hugging Face Daily Papers ↗ · 2026-10-09 Cached

Multi-Stream Attention Residuals (MSAR) 将注意力残差(AttnRes)从单流扩展为多头深度注意力,通过多尺度因果卷积引入流多样性,在 18B/28B MoE 规模的 12 项下游基准上一致优于标准残差、mHC 和 AttnRes,scaling law 实验显示相对标准残差基线有 1.58 倍的 iso-loss 算力加速。

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#attention

A Self-Pruning Transformer: Extreme KV-Cache Compression with Universal Attention

arXiv cs.LG ↗ · 2026-10-08 Cached

IBM Research and UIUC researchers propose Universal Attention, a self-pruning transformer framework combining first- and second-order key statistics into expressive forget gates that preserve RoPE and Softmax attention while achieving state-of-the-art 10x KV-cache compression and 25x compression at 16k context length.

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#attention

The Cost of Long Memory: State, Context, and Stability Complexity in Sequence Models

arXiv cs.LG ↗ · 2026-10-08 Cached

本文研究序列模型中的长程记忆资源问题:给定预测记忆律,证明了指数与有限状态模式在预测风险下的匹配上下界,得到达到误差τ所需的 Θ(log²(1/τ)) 状态复杂度定律,并分析了分数长记忆、非线性递归的临界性条件及其与状态空间、门控循环和注意力模型的实验验证。

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