arXiv AI

Ensemble Learning for Large Language Models in Text and Code Generation: A Survey

arXiv:2503. 13505v3 Announce Type: replace-cross Abstract: Generative Pretrained Transformers (GPTs) are foundational Large Language Models (LLMs) for text generation.

arXiv AI
Sep 1

AdaFuse: Adaptive Ensemble Decoding with Test-Time Scaling for LLMs

AdaFuse is an adaptive ensemble decoding framework for large language models that dynamically selects fusion units during generation. It uses an uncertainty-based criterion to decide when to ensemble, applying a diversity-aware scaling strategy in uncertain states while continuing direct generation when confident. Experiments on question answering, arithmetic reasoning, and machine translation show AdaFuse outperforms strong baselines with an average relative improvement of 6.88%.

By Chengming Cui, Tianxin Wei, Ziyi Chen, Ruizhong Qiu, Zhichen Zeng, Zhining Liu, Xuying Ning, Duo Zhou, Jingrui He
arXiv Computation and Language
Sep 2

Evaluating Style-Personalized Text Generation: Challenges and Directions

The paper "Evaluating Style-Personalized Text Generation: Challenges and Directions" examines the difficulties of assessing text that is tailored to individual users’ styles. It critiques common metrics such as BLEU, embeddings, and LLM-as-judges, and introduces a style discrimination benchmark covering domain discrimination, authorship attribution, and LLM-generated personalized versus non-personalized discrimination across eight writing tasks. The study finds that ensembles of diverse evaluation metrics outperform single-evaluator approaches and offers guidance for reliable assessment of style-personalized generation.

By Anubhav Jangra, Bahareh Sarrafzadeh, Silviu Cucerzan, Adrian de Wynter, Sujay Kumar Jauhar
arXiv Machine Learning
Sep 4

Unifying Conformal Language Tasks with In-Context Ensembles

The paper introduces the Conformal Relevance framework, which employs in-context learning example curation and ensembling to generate a score function that preserves coverage while enhancing conciseness for NLP tasks such as summarization and extractive question answering. Unlike previous methods that rely on labor-intensive, task‑specific prompt engineering, this approach requires minimal manual input. The authors validate the framework across seven NLP tasks and provide a theoretical analysis of how diversity in ensembled conformal scores can improve worst‑case sentence scores, including a saturation bound on ensemble gains.

By Xiao Shi Huang, Chen-Yuan Lin, Bruce Kuwahara, Kin Kwan Leung, Jesse C. Cresswell
arXiv Machine Learning
Jun 15

Ensembling Sparse Autoencoders

arXiv:2505. 16077v2 Announce Type: replace Abstract: Sparse autoencoders (SAEs) are used to decompose neural network activations into human-interpretable features.

By Soham Gadgil, Chris Lin, Su-In Lee
arXiv AI
Jun 12

Authorship Attribution in Multilingual Machine-Generated Texts

arXiv:2508. 01656v2 Announce Type: replace-cross Abstract: As Large Language Models (LLMs) have reached human-like fluency and coherence, distinguishing machine-generated text (MGT) from human-written content becomes increasingly difficult.

By Lucio La Cava, Dominik Macko, R\'obert M\'oro, Ivan Srba, Andrea Tagarelli
arXiv AI
3d ago

MAP4CS: A Multi-dimensional Data Pruning Framework for Efficient Code Retriever Fine-tuning

MAP4CS is a data pruning framework that selects a small, high‑quality core subset from large code corpora by combining syntactic structure, semantic diversity, and distributional representation, followed by rule‑based filtering. Experiments on two large datasets show that using only 5% of the training data, MAP4CS outperforms random sampling and matches or exceeds full‑corpus fine‑tuning, supporting the idea that less data can be more effective. The method also automatically removes duplicates and noise, producing a lexically diverse and information‑dense training set.

By Yuxuan Chen, Mingwei Liu, Guangsheng Ou, Zekai Zhang, Zike Li, Yanlin Wang, Pelin Zheng