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    Me1wen/README.md

    Hi, I'm Yiyang Lei (Kenny)

    I'm a Business Analytics graduate focused on data analytics and business problem-solving.

    I use SQL and Python to clean datasets, build analytical workflows, evaluate models, and translate results into business recommendations.

    Skills

    SQL | Python | Pandas | scikit-learn | Tableau | Excel | BigQuery

    Featured Projects

    Telecom Customer Churn Prediction

    Built a machine learning workflow to predict customer churn, compare classification models, tune decision thresholds, and translate model results into retention recommendations.

    Stratified Sampling SQL Pipeline for Classifier Recall Estimation

    Built a BigQuery SQL workflow to estimate classifier recall using stratified sampling, weighted evaluation, and validation checks for imbalanced content-moderation data.

    Career Focus

    I'm currently looking for Data Analyst, Business Analyst, Marketing Analyst, and related analytics roles.

    Pinned Loading

    1. stratified-sampling-classifier-recall-sqlstratified-sampling-classifier-recall-sqlPublic

      BigQuery SQL workflow for estimating classifier recall using stratified sampling and weighted evaluation.

    2. telecom-customer-churn-predictiontelecom-customer-churn-predictionPublic

      Telecom customer churn prediction using Python, scikit-learn, model tuning, and retention-focused business insights.

      Jupyter Notebook