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7679 articles
arXiv cs.AI·

SkillGrad: Optimizing Agent Skills Like Gradient Descent

SkillGrad optimizes LLM agent skills using a gradient-descent-inspired framework. Task executions provide trajectory-level loss signals, automatic diagnostics generate text-based gradients, and a momentum agent accumulates recurring patterns. Evaluated on SpreadsheetBench and WikiTableQuestions, SkillGrad outperforms training-based baselines by 6.7 percentage points on average.

AI AgentsReinforcement learningPrompt engineering
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arXiv cs.AI·

PEAM: Parametric Embodied Agent Memory through Contrastive Internalization of Experience in Minecraft

PEAM is an embodied agent memory framework in Minecraft that internalizes experience as parameters rather than inference-time retrieval. It pairs a slow LLM for reasoning with a fast parametric module (Mixture-of-Experts LoRA) learning via behavioral cloning and contrastive objectives. Failures are treated as training signals to learn corrected actions.

AI AgentsReinforcement learningFine-tuning
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arXiv cs.CL·

BioELX: Cross-lingual Biomedical Entity Linking via Alias-based Retrieval and LLM Ranking

BioELX is a two-stage cross-lingual biomedical entity linking system requiring no annotated training data. It enriches SapBERT with Wikidata-derived multilingual aliases and uses an LLM for context-aware disambiguation. On five benchmarks, it achieves +19.2 Recall@1 on XL-BEL, with major gains for low-resource languages (Turkish +21.6, Korean +22.1, Thai +30.8).

BenchmarksPapersRAG
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arXiv cs.CL·

TRACES: Proactive Safety Auditing for Multi-Turn LLM Agents via Trajectory-State Modeling

TRACES is a proactive safety auditor for multi-turn LLM agents that detects drift toward unsafe behavior from hidden representations of an observer LLM. Trained with weak trajectory-level supervision, it produces dense prefix-level risk estimates, improving full-trajectory safety prediction and proactive risk discrimination across multiple agent safety benchmarks.

AI AgentsAI safetyReasoning
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arXiv cs.AI·

A Policy-Driven Runtime Layer for Agentic LLM Serving

Proposes intermediate runtime layer between agent framework and LLM serving engine. Introduces four primitives (observe, score, predict, act) to implement agent-aware policies (KV caching, batch shaping, speculation, fairness, safety). CacheSage, instantiated for cross-session caching, achieves +13 to +37 pp cache hit-rate lift, 12–29% lower TTFT, 6–14% higher throughput on five real multi-agent workloads.

AI AgentsMulti-agentInfrastructure
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arXiv cs.CL·

Cultural Fidelity in English-to-Hindi Translation: A Preservation-Fluency Frontier for Gender Recoverability

Study on gender preservation in English-to-Hindi translation. Benchmark of 37,345 instances shows GPT-4o-mini and Sarvam frequently erase gender via ergative constructions. Two rerankers (SAR and PAR) improve gender recoverability: PAR increases accuracy from 11-16% to 49-54%, but reduces fluency (4.36→3.37). Reveals preservation-fluency tradeoff.

BenchmarksVisionAlignment
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arXiv cs.CL·

Escape the Language Prior: Mitigating Late-Stage Modality Collapse in Audio Reasoning via Modality-Aware Policy Optimization

Modality-Aware Policy Optimization (MAPO) addresses late-stage modality collapse in audio-text models during RL fine-tuning. The method concentrates policy gradients on modality-critical tokens via a modality relevance mask and adds an attention penalty to sustain cross-modal grounding. MAPO achieves SOTA on several complex audio reasoning benchmarks.

Reinforcement learningReasoningAlignment
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Reddit r/LocalLLaMA·

I built a 103B-token Usenet corpus (1980–2013) — pre-web, human-only, zero AI contamination. Got strong traction on r/ML, thought this community would find it useful.

Complete Usenet corpus (1980–2013) released for local fine-tuning: 103.1B tokens, 408M posts, zero AI contamination. Pre-SEO, pre-algorithm internet writing across 33 years. Organized by domain hierarchies (comp.*, sci.*, rec.*). Free samples available, full corpus under license.

Fine-tuningOpen sourceBenchmarks
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arXiv cs.AI·

Composition Collapse: Stable Factual Knowledge Does Not Imply Compositional Reasoning

arXiv paper reveals that models with statistically indistinguishable atomic knowledge fail systematically to chain them in multi-hop reasoning (>40 percentage point gap). Aggregate metrics mask this 'composition collapse'. Authors introduce a double-gate protocol decomposing post-training gains into three independent channels: atomic stability, residual composition, and critical depth.

ReasoningBenchmarksEvals
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arXiv cs.AI·

MedGuideX: Internalizing Decision Logic from Executable Guidelines into Large Language Models for Clinical Reasoning

MedGuideX transforms clinical practice guideline (CPG) recommendations into executable decision logic to generate question-answering training data. Post-training a medical LLM on this data improves accuracy by 10.28% across four clinical reasoning benchmarks and produces physician-preferred rationales in faithfulness, validity, completeness, and clarity.

Fine-tuningReasoningEvals
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