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Stefano Zacchiroli

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Open access Oct 2026

URL Rot in Software Engineering Scholarly Works

Context: Citations play an important role in scholarly publishing. They increasingly reference Web-based resources via Uniform Resource Locators (URLs). However, URLs are prone to decay over time, threatening the value and integrity of scientific works. Objective: We investigate the persistence of URLs in software engi...

Apostolos Garos, D. Spinellis, Stefano Zacchiroli · 0 citations
Preprint Sep 2026

"We Permit the Use of AI, but [...]": The Landscape of AI Policies in Popular Open Source Projects

This work analyzes 281 AI contribution policies and identifies ten countermeasures against AI slop, targeting pull requests, users, and autonomous agents, to give maintainers and researchers a baseline and a labeled corpus for studying the impact of AI policies.

André C. Hora, Romain Robbes, Stefano Zacchiroli · 1 citation
#natural language process... Preprint Sep 2026

CodeGraph: Open-Taxonomy Knowledge Graph for Source Code with Wikidata Grounding

A pipeline for building an open-taxonomy semantic annotation of source code using a code-specialised Large Language Model, and a calibrated quality-assurance protocol that quantifies annotation precision by combining a small human gold set with an LLM-as-a-judge filter are presented.

Federico Pennino, Andrea Gurioli, Stefano Zacchiroli et al. · 1 citation
Review Jul 2026

Not In My Git Yard: Catching Backdoors at Commit and Release Time

Lily is presented, an automated approach that strengthens open-source development and release processes against backdoor injection and achieves high detection accuracy with low false alarm rates, reliably identifies malicious code, resists adversarial attempts, and would have prevented real-world backdoor incidents.

Dimitrios Kokkonis, M. Marcozzi, Stefano Zacchiroli · 0 citations

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