Sales Data

***** ****** *****

Irvine CA *****

Phone: 949-***-****

CHING-HENG CHIU

************@*****.***

www.linkedin.com/in/chinghengchiu/

github.com/RileyChiu

EDUCATION

University of California, Irvine Irvine, CA Fall 2014 – Present Ph.D. in Mathematics GPA: 3.8

Thesis: Strong Selmer Companion Elliptic Curves

Nathional Taiwan University Taipei, Taiwan Fall 2010 – Spring 2012 M.S. in Mathematics. GPA: 3.8

Nathional Taiwan University Taipei, Taiwan Fall 2006 – Spring 2010 B.S. in Mathematics GPA: 3.1

Related coursework: probability, statistics.

PERSONAL PROJECT

Kaggle Competitions

• Titanic: Machine Learning from Disastere (Ranking: 462/9985 teams (Top 5%), Accuracy: 0.81818)

– Performed exploratory data analysis. Utilized data visualization and data preprocessing to clean data, imputed the missing values and performed feature engineering to create new features.

– Implemented Random Forest model and used grid search to fine-tune hyperparameters.

– Predicted survival on the Titanic.

• House Prices: Advanced Regression Techniques (Ranking: 717/3283 teams (Top 22%), RMSE: 0.11696)

– Utilized data visualization and data preprocessing to clean data, imputed the missing values and performed feature engineering to create new features and modify old features.

– Implemented model ensembeling (stacking) using models such as Lasso Regression, Kernel Ridge Regression, Gradient Boosting Regression, XGBoost and LightGBM. Computed model scores using cross validation.

– Predicted house sales prices.

• Rossmann Store Sales (RMSPE: 0.18488)

– Integrated pandas data frames. Utilized data visualization and data preprocessing to clean data and imputed the missing values.

– Implemented model ensembeling (boosting).

– Forecasted sales by using time series models such as VAR and Prophet. EMPLOYMENT

Teaching Assistant University of California, Irvine April 2015 - Present Leading discussions and grading exams.

Courses taught: Calculus, linear algebra, introduction to group theory, introduction to rings and fields. Research Assistant Taida Institute for Mathematical Sciences(TIMS)

September 2013 - June 2014

Mathematics project presentation.

Project: Finitely Generated Projective Module over the Tate Algebra. SKILLS

Computer Science: Python, Pandas, NumPy, Data Visualization, Data Cleaning, Scikit-Learn, Prophet, VAR, LightGBM, SQL

Mathematics: Number Theory, Abstract Algebra, Linear Algebra, Statistics, Hypothesis testing LANGUAGES

Languages: English (Fluent), Mandarin (Mothertongue)

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