World-class senior data scientist skill specialising in statistical modeling, experiment design, causal inference, and predictive analytics. Covers A/B testing (sample sizing, two-proportion z-tests, Bonferroni correction), difference-in-differences, feature engineering pipelines (Scikit-learn, XGBoost), cross-validated model evaluation (AUC-ROC, AUC-PR, SHAP), and MLflow experiment tracking — using Python (NumPy, Pandas, Scikit-learn), R, and SQL. Use when designing or analysing controlled experiments, building and evaluating classification or regression models, performing causal analysis on observational data, engineering features for structured tabular datasets, or translating statistical findings into data-driven business decisions.

世界级高级数据科学家，专精于统计建模、实验设计、因果推断和预测分析。涵盖A/B测试（样本量计算、双比例z检验、Bonferroni校正）、差分中的差分、特征工程管道（Scikit-learn、XGBoost）、交叉验证模型评估（AUC-ROC、AUC-PR、SHAP）以及MLflow实验追踪，使用Python（NumPy、Pandas、Scikit-learn）、R和SQL。适用于设计或分析受控实验、构建与评估分类或回归模型、对观测数据进行因果分析、为结构化表格数据集开发特征，或将统计洞察转化为数据驱动的商业决策。