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artificial intelligence

20,463 papers

#artificial intelligence Preprint Oct 2026

RetiJev: Fast and Source-Grounded Ophthalmic Decision Models

Ophthalmic clinical decision support requires fast, accurate, and privacy-preserving inference, yet autoregressive large language models (LLMs) incur substantial latency and computational overhead for decisions among predefined actions. We therefore investigate a decision-oriented alternative to generative reasoning. S...

Bo Liu, Lian-Yu Wang, Meng Wang et al. · 1 citation
#artificial intelligence Preprint Open access Oct 2026

Meaning Contracts: Local Semantic Geometry in Large Language Models

This paper studies the local geometry of semantic meaning in large language models. Current representation analyses ask whether meanings are close in embedding space, or whether linear probes separate semantic classes, but they do not characterize the within-concept local geometry: what is invariant across realizations...

Andr\'es Daniel Godoy Ortiz · 0 citations
#artificial intelligence Preprint Oct 2026

ULME: Predictive Coupling for Mutually Reinforcing Embedding and Language Modeling

Text embedding and text generation are two of the most useful capabilities of modern large language models, yet they are typically provided by separate specialized models (an embedder and a generator) trained with incompatible objectives and deployed side by side in retrieval-augmented generation and agent systems. Rec...

Yang Liu, Zhi-Qiang Yuan, Shu-Dong Huang et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

From Clinical Judgment to Checkable Rules: Clinician-Led Guardrails for Mental-Health Chatbots

Large language models (LLMs) deployed in mental-health contexts can be evaluated for safety failures, but the resulting judgments are often difficult to inspect or explain. Common approaches to improving safety rely on prompt engineering, LLM-as-a-Judge, and Constitutional AI. In this work, we describe a clinician-led...

Chenhan Lyu, Kit Wislocki, Sarah Elizabeth Stoeckl et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Spectral Smoothing and Spiking Perturbations Reconfigure Capability Profiles and Selective Task Performance in Large Language Models

Singular-value spectra encode important structure in transformer feed-forward projections, yet their causal role in downstream behavior remains underexplored. We study post-hoc spectral smoothing and spiking interventions on the up_proj and down_proj matrices. Positive perturbation stretches deviations from the geometr...

Qince Luan, Jianhui Xu, Yang Xu · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Protegrity-PII Technical Report

We present Protegrity-PII, a new PII decision model for structured and unstructured text. Protegrity-PII achieves a typed recall of 0.915 with a precision of 0.907 on a new benchmark we propose, PII-SCOPE. Our model processes text in 0.49 seconds per million characters at \$0.0005 per million characters on a single RTX...

Hardeep Bassi, Hui Ma, Lu\'is Seabra et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Self-Assessment Reinforcement Learning for Search-State Awareness in Retrieval-Augmented Large Language Models

Self-Assessment Reinforcement Learning (SARL), a reinforcement learning framework in which models learn to recognize their own search state during training and improve their search behavior accordingly, without requiring additional assessment at test time, outperforms methods built on auxiliary supervision or multi-age...

Taewhoo Lee, Min-Ju Song, Jungwoo Park et al. · 0 citations
#artificial intelligence Preprint Oct 2026

MemPlan: Memory-Conditioned PDDL Planning for Partially Observable Text Environments

MemPlan is proposed, a memory-conditioned PDDL planning framework for partially observable interactive text environments, which improves task completion and step efficiency over language-only and PDDL-aware baselines, while substantially reducing online token cost compared with LLM-planning baselines such as ReAct.

Teng-Wei Song, Robert Hoehndorf · 0 citations
#artificial intelligence Preprint Sep 2026

FusionEval: Benchmarking Model Fusion for Large Language Models

Model fusion aims to integrate the capabilities of multi-expert models into a single model. Existing evaluations offer limited coverage of reasoning with long chains of thought and tool use, while strong average performance can mask substantial losses in individual expert capabilities. We introduce FusionEval, a benchm...

Shuo Cai, Yang-Gan Gu, Yuhang Liu et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

TauIndianBankBench: Procedure-Aware, Action-Oriented Evaluation of Tool-Using Conversational Agents

Many Indian banks serve customers through FAQ pages and scripted chatbots. Assistants based on language models could respond faster and carry out requests such as blocking a card, but only if they give correct information and follow the bank's rules. These rules prescribe a procedure, a set of required steps, such as o...

Krishanu Adhikary, Prashant Devadiga · 0 citations
#artificial intelligence Preprint Sep 2026

Lighthouse: On Building a Trustworthy Digital Assistant for Exploring History with Civil Rights Archives

This work presents the first digital assistant named Lighthouse, the first digital assistant named Lighthouse--commonly called a chatbot--for exploring the Civil Rights period of the United States using data from South Carolina.

John A. Aydin, Angela Williams, Steven Dindl et al. · 0 citations

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