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Three-class sentiment analysis (satisfied, neutral, not satisfied) on 53k Amazon Echo Dot reviews with a heavy 81/8/11 class imbalance. Compares 7 TF-IDF classical models and 5 fine-tuned transformers (BERT, RoBERTa, DeBERTa and more). Best model: DeBERTa-v3 with 0.752 macro-F1 and 88.7% accuracy. Includes a Flask web app for live predictions.
Two-stage ABSA pipeline in PyTorch & Transformers: extracts product attributes (ATE) and classifies aspect polarities (ASC) using BERT on Women's Clothing and SemEval benchmarks.
SATA is a PyTorch-based transformer model fine-tuned for emotion (sentiment) classification on English text. It is built on top of the roberta-base architecture and trained using the Hugging Face emotion dataset.