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New paper reveals embedding retrieval's surface-form bias

A new research paper explores the limitations of current embedding retrieval systems, particularly their reliance on surface-form similarity rather than underlying structural meaning. The study found that in domains like competition mathematics, retrieval models fail to identify relevant items when wording is intentionally disguised, often prioritizing lexically similar but semantically incorrect results. While LLM rerankers show promise in improving retrieval accuracy, especially in mathematics, the paper suggests that current benchmarks may not adequately capture true structural understanding. AI

IMPACT Highlights a critical limitation in current AI retrieval systems, suggesting a need for models that prioritize structural understanding over superficial similarity.

RANK_REASON The cluster contains a research paper detailing a new study and its findings.

Read on arXiv cs.IR (Information Retrieval) →

AI-generated summary · Google Gemini · from 2 sources. How we write summaries →

New paper reveals embedding retrieval's surface-form bias

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COVERAGE [2]

  1. arXiv cs.AI TIER_1 English(EN) · Nabira Rashid, Manolis Kellis ·

    Retrieved but not ranked: surface-form bias in structural retrieval, from mathematics to agent trajectories

    arXiv:2609.01556v1 Announce Type: cross Abstract: We evaluate embedding retrieval where surface form and meaning are pulled apart on purpose: retrieving items that share underlying structure but not wording, in two unrelated domains under one protocol, competition mathematics (Ma…

  2. arXiv cs.IR (Information Retrieval) TIER_1 English(EN) · Manolis Kellis ·

    Retrieved but not ranked: surface-form bias in structural retrieval, from mathematics to agent trajectories

    We evaluate embedding retrieval where surface form and meaning are pulled apart on purpose: retrieving items that share underlying structure but not wording, in two unrelated domains under one protocol, competition mathematics (MathNet-Retrieve; 500 queries, 117,088-item corpus) …