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Xiaojun Yuan

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Review Open access Jul 2026

AI-Driven Feedback for University Students’ ESL/EFL Academic Writing: A Scoping Review of Pedagogical Implementation and Learning Outcomes

This review maps the recent findings on the AI-driven feedback given to undergraduate-level ESL/EFL academic writing, examining how it is implemented, what learning outcomes it produces, and what shapes those outcomes. Drawing on 39 peer-reviewed empirical studies retrieved from Web of Science, Scopus, and ERIC, and fo...

Xiaojun Yuan, N. Chan · 0 citations
Preprint Jul 2026

H+ Embedding: Harmonizing Global and Token-Level Retrieval with Context-Dependent Phrases

H+ Embedding is introduced, a unified multi-granularity retriever that predicts variable-length phrase partitions, preserves uncovered tokens as singletons, and applies importance-guided unit selection with weighted MaxSim interaction.

Shusen Zhang, Jun-Yi Hu, Ye Feng et al. · 0 citations

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