Author

Xue-Guang Ma

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Preprint Aug 2026

Tevatron-Elastic: A Unified Abstraction for Training Elastic Retrievers and Rerankers

A single model scale challenges the flexibility of a production retrieval system: some settings need it faster, others need a smaller index, and the right trade-off changes with the workload. In the context of information retrieval (IR), a transformer-based model can be made smaller in three ways---using fewer layers,...

Yu Wang, Shengyao Zhuang, Xue-Guang Ma et al. · 1 citation

Preprint Aug 2026

Tevatron Meets Megatron: Expert-Parallel LLM Reranker Training on an Academic Budget

Tevatron 3.0 is presented, which integrates a Megatron-Core training backend into Tevatron while preserving its data pipeline, evaluation workflow, and Hugging Face-compatible checkpoints, and supports both LoRA and full-parameter fine-tuning.

Zhichao Xu, Xueguang Ma, Shengyao Zhuang et al. · 2 citations