Author

Hai-Peng Zhang

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Preprint Sep 2026

A Historical Corpus Is Not a Historical System: Auditing Hindsight Leakage in Stateful Data Discovery

Offline replay should estimate what a discovery system could retrieve at a historical point, yet freezing the corpus leaves interaction memory unconstrained. We formalize point-in-time (PIT) discovery through historical state $(D_t, \theta_t, M_{<i})$ and introduce a paired replay that changes only memory availability....

Yi-Xi Zhou, Fan Zhang, Si-Kun Wang et al. · 0 citations

#natural language process... Apr 2026

SQLStructEval: Structural Evaluation of LLM Text-to-SQL Generation

SQLStructEval is introduced, a framework that analyzes this behavior through canonical abstract syntax tree representations and adopts a pipeline that first generates structured intermediate representations and then deterministically compiles them into SQL, improving execution accuracy and structural agreement among co...

Yi-Xi Zhou, Fan Zhang, Zhiyu Guo et al. · arXiv.org · 1 citation