Charles Jacob Tan

Charles Jacob Tan https://github.com/charlez1998 (- www.linkedin.com/in/charles-j-tan- EDUCATION HBSc, University of Toronto Sep. 2016 – June. 2021 Statistics Specialist, Computer Science and Math Minor Relevant Coursework: Methods of Data Analysis in R, Computational Statistics in R, Machine Learning and Data Mining in Python, Managing Databases with SQL, Multivariate Statistical Analysis in R TECHNICAL SKILLS Languages: Python, R, HTML/CSS, JavaScript, SQL, STATA, SAS, Bash Technologies: PostgreSQL, Azure, MongoDB, MATLAB, Git, Tableau, Microsoft Office Communication: Fluent in English and Tagalog, Basic conversational Mandarin WORK AND OTHER EXPERIENCE COVID-19 Research Project | Research Assistant |University of Toronto Dec. 2020 – Apr. 2021 ◼ Worked alongside Professor Luai Al Labadi to carry out a comparison study to evaluate the predictive performance of various Poisson regression models on a COVID cases/deaths time series dataset ◼ Utilized Python and R to perform hypothesis and goodness of fit tests to determine which model consisting of various social/economic indicators best fit the COVID-19 population trends in U.S counties Business Analyst (Data Analyst) Intern |Bell Canada ◼ ◼ ◼ May 2020 – Aug. 2020 Created a performance dashboard to monitor specific metrics of Bell’s mobile app through the Plotly, Dash and Scikit-learn libraries on Python Integrated forecasting functionalities to predict the future of the mobile app’s performance metrics through SARIMAX, Recurrent Neural Network (RNN) and other time series models Competed in the summer business case competition to pitch a new medium for distributing digital media content and conducted A/B testing to determine the best direction for content delivery Math Instructor | Kumon Philippines | Taguig City, Philippines Aug. 2012 – Apr. 2016 ◼ Provided assistance in different levels of math ranging from basic arithmetic to advanced algebra to help develop student’s critical thinking and problem-solving skills ◼ Marked and recorded homework in accordance with Kumon guidelines to aid in student feedback ◼ Provided exceptional teaching– Candidate for the 2014 Kumon Philippines Teaching Award PROJECTS COVID Test Using Chest X-Ray Images Jul. 2021 - Present ◼ Designing a Web Application for the Providence Hospital in Quezon City that utilizes the VGG16 CNN model to classify whether a visitor has COVID based on X-ray images of their posteroanterior (PA) chest view ◼ Working with the hospital’s radiologists to regularly train the model with new SARS-COV-2 variant images ◼ Achieving an accuracy of 70% on hospital visitors and accelerated the check-in process time by over 30% Bitcoin Price Forecasting and Analysis Aug. 2021 - Sep. 2021 ◼ Developed an LSTM time series model that aims to estimate Bitcoin prices for the coming month and has ultimately achieved an MAE of $1450 – 1500 USD for the forecasted month ◼ Scraped Bitcoin Tweets and Market Cap metrics from past years to feature engineer and improve analysis ◼ Optimized hyperparameters by conducting a grid search which decreased the RMSE of the model by 52% True Sight | Research and Development Head Oct. 2019 - Dec. 2019 ◼ Led a team of five to perform collection, entry and cleaning of data from over 350 surveyed U of T students ◼ Utilized Python, Pandas, Scikit-learn, R, Multivariate and Logistic Regression to establish relationships between eyesight prescription and university student work habits ◼ Prepared visualizations and presented findings to professors of the Psychology department