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Si-Kun Wang

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#artificial intelligence Preprint Sep 2026

EviGraph: Proof-Carrying Selective Recommendation over Temporal Public-Service Knowledge Graphs

EviGraph, which distinguishes critical decision requirements from information that can remain unresolved in a temporal knowledge graph, is introduced, suggesting that reliable evidence-based navigation depends on specifying what must be established for a decision, rather than simply adding more verification.

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

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