Alex focuses on refactoring-resistant similarity detection and benchmarking Codequiry against tools like MOSS, JPlag and Dolos.
General
13 min
Alex Petrov
•
1 day ago
A Java submission and a Python submission looked nothing alike, but they were the same algorithm translated line by line. This is the story of how cross-language code plagiarism detection actually works, where it catches translated code, and where it still fails.
General
10 min
Alex Petrov
•
3 days ago
As a bootcamp instructor, I've graded hundreds of take-home coding challenges. The AI-resistant ones share a pattern: they ask for process artifacts, not just final code. Here's how to design assignments that hold up.
General
6 min
Alex Petrov
•
4 days ago
A hands-on retrospective on how code similarity detection grew from naive line diffs to tokenization, ASTs, and fingerprinting. Follow a step-by-step Python prototype and a production workflow with Codequiry to catch refactored plagiarism in CS courses.
General
9 min
Alex Petrov
•
2 weeks ago
A bootcamp instructor walks through the exact workflow he uses to catch student code copied from tutorials, GitHub repos, and Stack Overflow answers, including what peer-only checkers miss, how to read web match reports without false positives, and where Codequiry fits.
General
10 min
Alex Petrov
•
2 weeks ago
Quoted Google searches used to be the standard way to catch a Stack Overflow lift. I tracked the shift across tools, fingerprints, and live web corpora, and why modern checks need to pair source matching with AI detection. The short version: the web changed the question from "who copied whom" to "where did this code come from."
General
8 min
Alex Petrov
•
3 weeks ago
A logistics company needed to know whether a contractor's 14,000-line Python service was original before paying the final invoice. Token-based fingerprinting showed exactly how much had been lifted from an open source repo and rewritten just enough to hide. What the team learned about normalization, thresholds, and the limits of similarity scoring applies to any company that accepts outside code.
General
10 min
Alex Petrov
•
3 weeks ago
As a bootcamp instructor and open-source maintainer, I've closed hundreds of license-related pull requests. Most were copy-paste fixes where someone dropped a Stack Overflow function into a GPL project. This walks through what actually triggers license tickets, which scanners catch what, and where source similarity tools save you from silent compliance failures.
General
10 min
Alex Petrov
•
3 weeks ago
A direct walkthrough of a Python code plagiarism audit across three bootcamp cohorts. Learn which thresholds actually caught copied code, why starter-code exclusion matters, and how to stack web and AI detection into one honest review pass.
General
9 min
Alex Petrov
•
4 weeks ago
A bootcamp instructor explains how token-level perplexity works as an AI code signal, what thresholds we actually use in Java review, and why a single statistical score is never enough on its own.
General
11 min
Alex Petrov
•
1 month ago
A 400-student Python course adopted Codequiry to check submissions for plagiarism and AI generation. The instructor found that 18% of assignments contained copy-pasted code from Chegg, and 12% showed strong signs of LLM authorship — a pattern that peer-only checks had missed entirely.
General
11 min
Alex Petrov
•
1 month ago
When Riverside University’s CS department ran an AI detector across 300 CS2 assignments alongside MOSS, they discovered a new layer of academic integrity challenges. The case study reveals what they found, how they calibrated thresholds, and why combining AI detection with source-code fingerprinting changed their grading workflow.
General
11 min
Alex Petrov
•
1 month ago
A copied snippet might survive a human code review after a quick variable rename and loop inversion. A similarity checker that understands ASTs won’t be fooled. This guide walks through wiring Codequiry’s API into your Git pre‑commit workflow, step by step, so every commit is scanned for non‑original code before it hits the branch.