Georgina Willoughby

Pronouns: She/Her


About

My research project

Publications

Georgina Jennifer Willoughby, Jordan Mark Andrew Robert Painter, Diptesh Kanojia, Emily Frances Wells, Constantin Orasan (2026)SurreyCTS at BEA 2026 Shared Task 1: Semantic Funnelling and Entropy-based Multilingual Lexical Difficulty Prediction, In: Proceedings of the 21st Workshop on Innovative Use of NLP for Building Educational Applications (BEA 2026)pp. 1016-1023 Association for Computational Linguistics

This paper describes the SurreyCTS submission 1 to the BEA 2026 shared task on lexical difficulty prediction, entered in the Open Track. Our approach progressed from base-line multilingual encoders to a hybrid Rem-BERT architecture with extensive feature engineering , combining semantic funnelling, lexical similarity features, attention-derived signals , and language-aware representations. On our internal production validation set, the best single models achieved RMSE 0.8122 (prod-H) and Pearson correlation 0.8968 (prod-G). A weighted ensemble of the five strongest systems, with weights proportional to inverse squared validation RMSE, was submitted as our final entry. On the official shared-task test set, the ensemble achieved RMSE 1.034, 0.945, and 0.861 for Spanish, German, and Chinese respectively, outperforming the open-track base-line in all three settings and placing fifth among open-track teams.