Joshua Mayes

Data Scientist

Joshua Mayes

Available

Data Scientist

Cohort

Kalpana

Available Work Locations: Richmond, VA

Military Veteran

Inactive Secret

Core Technologies: Python, MySQL, Spark, Tableau, Pandas, NumPy, Matplotlib, Seaborn, SciKitLearn, Anaconda, Jupyter Notebooks, Git/GitHub

Core Competencies: Data Storytelling, Applied Statistics, Machine Learning, Natural Language Processing, Classification, Regression, Clustering, Time Series Analysis, Anomaly Detection


Hire Me Because

If you want someone excited about automation and process improvement!


My Capstone Project: Predicting Wine Quality

Our project made use of the Wine Quality Dataset from the UCI Machine Learning Repository, which includes 6500 ‘Vihno Verde’ wines from the Portugal region, each with 11 physicochemical measurements and a human-labeled quality score. The goal was to provide value to wine manufacturers and consumers by identifying how certain chemical concentrations influence the average quality of a wine and creating a machine learning model that predicts a wine’s quality score. Our best model was a polynomial linear regression model that predicted a wine’s quality within 0.7 quality points on average. We also developed an unsupervised K-means clustering model to identify the unique “flavor profiles” of wines. These flavor profiles highlighted the human labelers’ bias towards strong (high %ABV) and dry (low sweetness) wines.

“With technology, I am most passionate about standardizing the process and making it easily reproducible by others.