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7679 articles
arXiv cs.AI·

Ensembling Tabular Foundation Models - A Diversity Ceiling And A Calibration Trap

Six modern tabular foundation models form a highly redundant ensemble (mean Q-statistic 0.961). On 153 OpenML classification tasks, the best ensemble (two-level cascade stacking) gains +0.18% accuracy at 253× compute cost. Friedman-Nemenyi analysis places three ensembles and the best single model in the same equivalence group. Greedy selection is recommended as practical default.

BenchmarksPapers
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75
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arXiv cs.CL·

Generalization or Memorization? Brittleness Testing for Chess-Trained Language Models

Researchers train KinGPT (25M parameters) on chess data and demonstrate that high benchmark scores of chess-trained LLMs stem primarily from pattern-matching rather than genuine rule understanding. LLM-Modulo, a verifier-in-the-loop framework, improves RedPajama 3B from 1.2% to 21.2% best-move accuracy. Training code, datasets, and model checkpoints open-sourced.

BenchmarksEvalsFine-tuning
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75
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arXiv cs.AI·

Data Presentation Over Architecture: Resampling Strategies for Credit Risk Prediction with Tabular Foundation Models

Comparative study of tabular foundation models (TFMs) vs classical models on credit default prediction. On Home Credit and Lending Club datasets, context construction strategy (balanced vs uniform sampling) explains more AUC-ROC variance than model choice: +3-4 AUC points. With 5K-10K balanced examples, TFMs match classical GBDTs while improving default-class recall.

Benchmarks
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75
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arXiv cs.AI·

SAPO: Step-Aligned Policy Optimization for Reasoning-Based Generative Recommendation

SAPO improves generative recommendation by aligning reinforcement learning optimization to individual reasoning steps. Instead of assigning a single advantage to the entire response, SAPO computes separate group-relative advantages for each reasoning step and SID token, stabilizing training and outperforming baselines across three real-world datasets.

Reinforcement learningReasoningCode generation
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75
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15
arXiv cs.AI·

EvolveR: Self-Evolving LLM Agents through an Experience-Driven Lifecycle

EvolveR is a framework enabling LLM agents to learn from their own experiences through a closed-loop lifecycle. It combines offline self-distillation (synthesizing interaction trajectories into reusable strategic principles) and online interaction (actively retrieving distilled principles to guide decisions). Tested on complex multi-hop QA benchmarks, it outperforms existing agentic baselines.

AI AgentsReinforcement learningReasoning
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75
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arXiv cs.AI·

CheckSupport: A Local LLM-Powered Tool for Automated Manuscript Submission Checklist Selection and Completion

CheckSupport is an open-source system using locally-deployed LLMs to automate reporting checklist recommendation and completion for scientific manuscripts. Evaluated on peer-reviewed manuscripts, it achieves 90% accuracy for checklist recommendations and 88% for item-level completion, processing each manuscript in 12.5 seconds on CPU-only hardware.

LlamaPrompt engineeringEvals
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75
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arXiv cs.AI·

Detecting Verbatim LLM Copy-Paste in Homework

SteganoPrompt, an open-source web tool, detects verbatim copies of assignment prompts submitted to LLMs. It encodes an invisible instruction in the prompt via the Unicode Tags block (U+E0000–U+E007F), creating a detectable signature in the model's response. Tested across 7 LLM families, the approach bypasses limitations of post-hoc detectors and requires no cooperation from model providers.

EvalsAI safetyPrompt engineering
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75
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arXiv cs.AI·

FUNCanon: Learning Pose-Aware Action Primitives via Functional Object Canonicalization for Generalizable Robotic Manipulation

FUNCanon breaks down long-horizon manipulation tasks into action sequences (actor-verb-object) and canonicalizes objects by functional affordances using VLM cues. FuncDiffuser, an object-centric and action-centric diffusion policy, learns on aligned data to generalize across object categories and enable cross-task behavior reuse.

RoboticsVisionAI Agents
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75
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