Adding 294 essay-level lexical features to a KoBERT+BiGRU model raises Korean essay scoring accuracy from 0.649 to 0.657 and quadratic weighted kappa from 0.509 to 0.538 on the AI-HUB Essay Evaluation Dataset.
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UKTA: Unified Korean Text Analyzer
Adding 294 essay-level lexical features to a KoBERT+BiGRU model raises Korean essay scoring accuracy from 0.649 to 0.657 and quadratic weighted kappa from 0.509 to 0.538 on the AI-HUB Essay Evaluation Dataset.