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DPO

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2

COMPANIES · 1 SOURCE · AWS Machine Learning

AWS launches SageMaker AI serverless 'Training Sessions' (GA) for model customization

Amazon announced general availability of Training Sessions for SageMaker AI serverless model customization, letting users run custom post-training loops (SFT, DPO, RLAIF, multi-turn RL, LoRA or full fine-tuning) without managing GPU infrastructure; SageMaker handles GPU allocation, distributed execution, checkpointing and fault recovery and offers a cookbook and agent skills for end-to-end workflows. Customers cited use cases including healthcare claim-denial triage and multi-turn agent training with tools like Amazon Neptune and gpt-oss-20b.

7.0

RESEARCH · 1 SOURCE · arXiv cs.AI

arXiv paper introduces SPOKE to improve strategic play of compact poker agents

The paper (arXiv:2610.27028v1) proposes Strategic Preference Optimization with KL-anchored Equilibrium (SPOKE), which combines teacher-relative value penalties, policy anchoring, risk constraints, and structured rationale supervision to improve strategic play under hidden information. Evaluated against SFT, DPO, GRPO, and GSPO on frozen models (SmallThinker, Qwen3, Gemma-3) and three runs of a SmallThinker-4B-A0.6B policy, SPOKE yielded lower mean exploitability in Kuhn (0.213) and Leduc (1.081) and higher six-max top-1 agreement (0.775) while maintaining teacher KL similar to SFT.

5.0