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YULINHEEE/README.md

🙋🏻‍♀️ About Me

Hi, I’m Yulin He! Data analyst with expertise in data analysis and reporting, query optimization and data modelling.

My Career Journey: Environmental Consultant --> Data Analyst.

📚 Expertise:

• Query Writing & Optimization - Writing efficient SQL queries, debugging performance issues and optimizing database queries for large datasets.

• Data Analysis & Visualization - Extracting insights using SQL, Python and R, and presenting findings through Tableau & Power BI.

🛠️ Tools:

• Language: SQL, Python, R, JavaScript

• Database: PostgreSQL, MySQL

• Visualization: Tableau, Power BI

👋🏻 Connect with Me

LinkedIn: www.linkedin.com/in/yulinhe1008

Email: [email protected]

Pronouns: She/Her

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  1. Supply-Chain-Data-Analysis Supply-Chain-Data-Analysis Public

    This project focuses on predicting delivery delay risk based on historical order and logistics data. Using feature engineering and machine learning, I developed models to identify high-risk shipmen…

    Jupyter Notebook

  2. NLP-text-preprocessing-and-classification NLP-text-preprocessing-and-classification Public

    Starter code to solve real-world text data problems related to job advertisements. Includes: Word2Vec, phrase embeddings, Text Classification with Logistic Regression, simple text preprocessing, pr…

    Jupyter Notebook 1

  3. Bitcoin_time_series_analysis Bitcoin_time_series_analysis Public

    Time series forecasting project using monthly Bitcoin index data. The analysis includes log transformation, stationarity testing, ARIMA model selection, residual diagnostics, and 12-month ahead for…

    Python

  4. Time-Series-Analysis-of-Solar-Power Time-Series-Analysis-of-Solar-Power Public

    The goal of this project is to forecast daily solar energy output and evaluate the dynamics of its return volatility for the upcoming 15 days.

    R

  5. COVID-19-Vaccination-Data-Analysis-with-SQL COVID-19-Vaccination-Data-Analysis-with-SQL Public

    This project demonstrates how to build a relational database from a real-world dataset and use SQL queries to extract meaningful insights from it.

    Jupyter Notebook

  6. YulinHe.github.io YulinHe.github.io Public

    CSS