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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

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Piyush Prashant

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Open access 2026

Semantic Vectors at SemEval-2026 Task 9: Robust Multilingual Polarization Detection via Dual-Encoder Fusion and Expert Ensembling

A Siamese dual-encoder jointly fine-tuning mDeBERTa-v3-base and XLM-RoBERTa-large via 4-bit QLoRA fused with language-specific expert models fused with language-specific expert models through an XGBoost meta-stacker with per-language Platt calibration achieves macro-F1 = 0.797 and accuracy = 0.827 across all 22 languages.

A. Dash, Priyanshu Mittal, Piyush Prashant et al. · 1 citation

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