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researcher

Zhen Han

4 papers here

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author4

Across the 4 of 4 papers where every author was matched, so the position is known.

fields
  • cs.AI1
  • cs.CL1
  • cs.IR1
  • cs.LG1
same name
  • Zhen Han — 6 papers
  • Zhen Han — 6 papers
  • Zhen Han — 5 papers, h 11
  • Zhen Han — 4 papers
  • Zhen Han — 3 papers
  • Zhen Han — 2 papers, h 15

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20242026
most citedHierarchical Lexical Graph for Enhanced Multi-Hop Retrieval

1 citations · 1 across the 2 of their papers we have counts for

collaborators

4 papers

cs.AI2026

SQL-Trail: Multi-Turn Reinforcement Learning with Interleaved Feedback for Text-to-SQL

Harper Hua, Zhen Han, Zhengyuan Shen +9

While large language models (LLMs) have substantially improved Text-to-SQL generation, a pronounced gap remains between AI systems and human experts on challenging benchmarks such…

cs.CL2025

BYOKG-RAG: Multi-Strategy Graph Retrieval for Knowledge Graph Question Answering

Costas Mavromatis, Soji Adeshina, Vassilis N. Ioannidis +6

Knowledge graph question answering (KGQA) presents significant challenges due to the structural and semantic variations across input graphs. Existing works rely on Large Language M…

cs.IR2025★ 1 cited

Hierarchical Lexical Graph for Enhanced Multi-Hop Retrieval

Abdellah Ghassel, Ian Robinson, Gabriel Tanase +6

Retrieval-Augmented Generation (RAG) grounds large language models in external evidence, yet it still falters when answers must be pieced together across semantically distant docum…

cs.LG2024

HybGRAG: Hybrid Retrieval-Augmented Generation on Textual and Relational Knowledge Bases

Meng-Chieh Lee, Qi Zhu, Costas Mavromatis +5

Given a semi-structured knowledge base (SKB), where text documents are interconnected by relations, how can we effectively retrieve relevant information to answer user questions? R…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.