Author

Lợi Hữu Nguyễn

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#machine learning Preprint Jul 2026

How Far Can Sub-3B Open Language Models Go in Zero-Shot Essay Scoring on an 8 GB Consumer GPU?

Zero-shot essay scoring with large language models is usually demonstrated with proprietary API models, yet the settings where automated scoring is most needed, such as public schools grading thousands of essays under strict privacy rules, are often those where sending student writing to a third-party API is unacceptab...

Son Nguyen, Minh Quang Dang, Lợi Hữu Nguyễn et al. · 0 citations

#machine learning Preprint Jul 2026

Accuracy Is Not Enough: A Cross-Architecture Audit of Demographic Bias in Deep Knowledge Tracing

Four architectures trained under three regimes on two public datasets with demographic metadata, evaluated with ABROCA, student-level bootstrap confidence intervals, and permutation tests addressing recent critiques of fairness-metric instability are found.

Minh Quang Dang, Son Nguyen, Lợi Hữu Nguyễn et al. · 0 citations