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Author

Vivek Gupta

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#artificial intelligence Preprint Oct 2026

JoinGR: Learning to Traverse Join Graphs for Table Retrieval

Retrieving the right tables is a prerequisite for Text-to-SQL over realistic databases. Dense table retrievers rank schema elements independently, but this ignores a key source of evidence: some required tables are not mentioned in the question and become identifiable only through their join relationships to already re...

S. De, Abhijit Chakraborty, Sambaran Bandyopadhyay et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Stashbird: Efficient Speaker-Indexed Memory for Conversational Agents

Stashbird is presented, an agent memory system that links source episodes to derived memory state through explicit provenance and achieves higher accuracy than Hindsight on LongMemEval-S and GroupMemBench and comparable accuracy on EverMemBench.

Chidera Biringa, Lucas Yannul, Xiao-Wen Wang et al. · 0 citations
#natural language process... Preprint Aug 2026

CAST: Critique-Aware Supervision for Training Reliable Long-Horizon Tool-Calling Agents

CAST, a critique-aware training framework that converts sparse task outcomes into action-level supervision for critique learning and policy optimization, is presented, demonstrating that critique-aware training improves the robustness of LLM agents in realistic dynamic environments.

Amir Saeidi, Zeng Zhang, Rishi Singh et al. · 1 citation

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