econ.EM · 2026-07-21 · No. 60

Econometrics, 2026-07-21.

1 new papers in econ.EM. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

1 entries
  1. 01

    Vector Search As Nearest Neighbor Matching: RAG-based Policy Learning in Causal Inference

    Masahiro Kato, Taka Kato

    econ.EM · cs.LG · math.ST · stat.ME · stat.ML

    We propose one-step and two-step methods for policy learning with retrieval-augmented generation (RAG). We formulate RAG-based action selection under the potential outcome framework. In the two-step method, vector search retrieves action-specific neighboring evidence in an embedding space, the generator estimates conditional expected outcomes or their contrasts, and a plug-in rule selects an action. This formulation connects action-specific...

    arxiv.org/abs/2607.18225 · PDF

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