Author

Xiaoyong Du

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Preprint Aug 2026

RaG-Tree: Combining R-Tree and HNSW for Multi-Attribute Range Filtered Approximate Nearest Neighbor Search

Multi-attribute range-filtered approximate nearest neighbor search (MR-ANNS), which retrieves high-dimensional vectors satisfying multiple attribute constraints, is a fundamental operation in modern AI applications. Existing MR-ANNS indexes either exploit a single attribute for range localization or recursively partiti...

Jia-Wei Liu, Xiang Zhang, Chao Zhang et al. · 0 citations

#artificial intelligence Preprint Sep 2026

EvoOntology: A Self-Evolving Ontology Layer for Data Agents

EvoOntology is introduced, a self-evolving ontology layer for data agents that encapsulates the ontology as an MCP server comprising a schema layer, a content layer, and a tool layer, enabling agents to actively query and interact with the ontology at runtime.

Mei-Duo Chong, Shao-Lei Zhang, Ju Fan et al. · 0 citations