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artificial intelligence

20,463 papers

#artificial intelligence Preprint Open access Nov 2026

Encoding and Propagation of Grammatical Number in Large Language Models

Sparse autoencoders (SAEs) have become an increasingly popular means of translating Large Language Model (LLM) hidden state vectors into a human-comprehensible list of features or symbols. As such, SAEs may provide insight into an LLM's knowledge representation and internal ``mental'' grammar - topics of pragmatic inte...

Jacob Solinsky (University of Minnesota), Serguei Pakhomov (University of Minnesota) · 0 citations
#artificial intelligence Preprint Open access Nov 2026

Efficient Diffusion Policy Fine Tuning with Latent Noise Representation Bridging

Pre-trained diffusion and flow policies have emerged as powerful backbones for robotics, yet adapting them to novel data via reinforcement learning (RL) remains computationally expensive, sample inefficient and lacks theoretical guarantees. Prior approaches that fine-tune the initial noise bypass costly backpropagation...

Yuanchu Liang, Yue Yang, An-Chi He et al. · 0 citations
#artificial intelligence Preprint Nov 2026

Satisficing as competitive Bayesian weighting: a minimal model of goal-directed choice under an unattained target

Animals and humans often do not maximize; they act relative to goals (aspiration levels) that are frequently not yet met. How can a goal that is not (yet) realized organize choice? Deacon (2012) calls such absence-referenced organization \emph{ententional}, and Garc\'{i}a-Valdecasas and Deacon (2024) argue that ends ar...

Moto Shinriki, Yu Kono, Tatsuji Takahashi · 0 citations
#artificial intelligence Preprint Open access Nov 2026

How Deep is the Signal? Time-Context up to 30 Years for Colorectal Cancer Prediction in a Primary-Care EHR Model

EHR foundation models read medical events within a fixed context window, and long context has so far been measured only in tokens. How far back in time a model must look to capture the earliest predictive signal is unknown. We introduce time-context, the calendar lookback window before the prediction point, and provide...

Achille Raviez, Lan Wang, Brendan Delaney · 0 citations
#artificial intelligence Preprint Nov 2026

Evolutionary Adaptive Neighborhood Learning: A Genetic Algorithm for Instance-Dependent k Optimization in Nearest Neighbor Classification

EANK (Evolutionary Adaptive Neighborhood K), which uses a low-dimensional policy to map local neighbourhood descriptors to an adaptive number of neighbours k(x), and investigates theoretical properties of the method, including dominance over global-k solutions on the training criterion, evolutionary convergence, policy...

Isaac Touza, Kaladzavi Guidedi, Kolyang · 0 citations
#artificial intelligence Preprint Open access Nov 2026

TriAttention: Unified Sparse Mixed-Precision Attention for Long-Context LLM Inference

Sparsity and quantization reduce the cost of attention by skipping interactions and lowering the precision of those retained. However, useful interactions differ in their precision requirements: some tolerate low-precision scores while remaining sensitive to removal. We therefore introduce TriAttention, which assigns q...

Hanzhi Zhang, Qiao Zhang, Qinglei Cao et al. · 0 citations
#artificial intelligence Preprint Open access Nov 2026

KG-Neighbor: Knowledge-Guided Neighborhood Construction for Embedding Visualization

In embedding visualizations, nearby instances are interpreted as semantically related, although neighborhoods derived from input embeddings may not reflect content relationships. Neighborhood-based dimensionality reduction (DR) methods can propagate this limitation by optimizing layouts from embedding-based neighborhoo...

Chang Won Kim, Jaewook Lee, Haeun Min et al. · 0 citations
#artificial intelligence Preprint Open access Nov 2026

MAC-v2: Long-horizon model-based value expansion from pixels

We study whether \emph{long-horizon model-based value expansion} can serve as an effective framework in pixel-based offline reinforcement learning (RL). Long-horizon model-based value expansion from pixels is substantially harder than state-based environments, as the agent must learn both the representation and its dyn...

Kwanyoung Park, Sergey Levine · 0 citations
#artificial intelligence Preprint Nov 2026

Archetypal contexts in the neurons of language models: an architecture for intelligence?

We validate our previous hypothesis that a language model holds relational patterns apart from the subject domains that instantiate them (Nordfors, 2026). These archetypal contexts are patterns of relations that people recognize across many fields, such as the tipping point or winner takes all, held once and applied ac...

D. Nordfors · 0 citations
#artificial intelligence Preprint Open access Nov 2026

SPILLWAY: Separating Target Admission from Sanitization to Defend Tool-Using Agents against Prompt Injection

Tool-using agents act on email, files, and payments, so an instruction hidden in a web page or a shared document can make an agent send data or money to an attacker. Many runtime defenses put a language model on the decision that lets an action through, so the decision depends on a model that may read the attacker's te...

Woosang Lim (SAINT Machines, KAIST), Yeseul Chang (Chung-Ang University) et al. · 0 citations
#artificial intelligence Preprint Open access Nov 2026

TileQuant: Tile as the Precision-Allocation Unit for LLM Mixed-Precision Post-Training Quantization

Post-training quantization (PTQ) reduces large language model (LLM) deployment costs, but preserving quality requires accounting for uneven weight sensitivity. Uniform PTQ uses one weight bit-width, importance-aware PTQ adjusts scales or reconstructs weights within that width, and column-wise mixed precision retains se...

Hanzhi Zhang, Qiao Zhang, Qinglei Cao et al. · 0 citations

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