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Wording 1
Optimized feature set and hyperparameters for a churn prediction model using XGBoost; increased AUC from 0.72 to 0.84 and reduced false positives by 18%, supporting targeted retention campaigns.
Wording 2
Re-architected model serving with TensorFlow Serving and ONNX conversion to cut inference latency from 450ms to 80ms per request, enabling real-time personalization for 2M monthly users.
Wording 3
Built a CI/CD pipeline using Airflow and Docker to automate nightly model retraining and validation; decreased manual deployment time by 75% and ensured repeatable model updates.
Wording 4
Designed a hybrid collaborative-filtering and content-based recommender using implicit-feedback matrix factorization and item embeddings, increasing click-through rate by 12% and average order value by 6%.
Wording 5
Developed a gradient boosting model and SHAP-based interpretability reports for underwriting; improved approval accuracy while providing regulators transparent feature attributions.
Wording 6
Trained transfer-learning CNNs in PyTorch on imbalanced medical imaging data with augmentations and focal loss, achieving 91% recall on target class and reducing labeling review workload.
Wording 7
Led an A/B experiment to compare rule-based vs. ML-driven pricing; model increased margin by 4% and passed statistical significance with p<0.01 over a two-week rollout.