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Author

Manabu Higashida

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#software testing Open access Oct 2026

Translate or Replay? Two AI-Assisted Rewrites Compared — ggblab version 1 → version 2 (n = 1) and Bun Zig → Rust: what each kept, what served as the oracle, what escaped, and what code volume measures

Technical report comparing two software rewrites carried out with AI coding agents in 2026. Bun, a JavaScript runtime, was translated from 535,496 lines of Zig into about 780,000 lines of Rust in eleven days by about 64 concurrent agents, gated by the existing test suite; the vendor reports 19 known regressions introdu...

Manabu Higashida · 0 citations
#generative ai Open access Sep 2026

User-Grounded Fidelity Probes: A Diagnostic Method for Evaluating Generative-AI Capability from Running Code and Field Expertise

University teaching and development lack a shared vocabulary for deciding which generative-AI model fits which use. This paper proposes user-grounded fidelity probes (here, probe means a diagnostic task whose answer the user already holds, not linear probing of internal representations): a diagnostic method that measur...

Manabu Higashida · 0 citations

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