Nelson L.

Nelson L. Email and Phone Number

Senior Data Scientist at Walmart Technology @ Walmart Global Tech
sunnyvale, california, united states
Nelson L.'s Location
Los Angeles Metropolitan Area, United States
About Nelson L.

Passionate data scientist with solid statistics background aided by various machine learning skills and consulting experience. Excited to generate data-driven insights and leveraging them for business impact. Looking forward to seeing a future driven by inundated data.PythonNumpy | Pandas | H2o | Scikit-Learn | ScrapyRDplyr | GGplot2 | ShinyOther LanguagesSQL | SAS | STATAMachine LearningGLM | KNN | Discriminant Analysis | SVM | Tree models | GBM | PCA | Clustering | Neural Network (basic)Tools & DBMSRStudio | Jupyter | Git | Tableau | PySpark (basic)

Nelson L.'s Current Company Details
Walmart Global Tech

Walmart Global Tech

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Senior Data Scientist at Walmart Technology
sunnyvale, california, united states
Employees:
6441
Nelson L. Work Experience Details
  • Walmart Global Tech
    Senior Data Scientist
    Walmart Global Tech May 2024 - Present
    Plano, Texas, United States
  • Walmart Global Tech
    Data Scientist
    Walmart Global Tech Mar 2020 - Apr 2024
    Plano, Texas, United States
  • Nyc Data Science Academy
    Data Science Fellow
    Nyc Data Science Academy Jun 2019 - Aug 2019
    Greater New York City Area
    Immersive Data Science program involving R, Python, SQL, and Sparks, as well as advanced statistics, visualization, and hands-on machine learning.- Scraped hedging positions for oil/gas companies from SEC (Securities and Exchange Commission) to investigate how company strategies varied against volatility in the market over time. Heavy emphasis on data cleaning. Performed time-series analysis to predict stock return based on engineered features and other macro-economic variables.- Predicted housing prices with Elastic Net, kernel ridge, SGD and XGBoost using ensemble and stacking regression techniques. The project scope also encompassed EDA, data cleaning and feature engineering.- Scraped movie data from RottenTomatoes and created a Tableau dashboard to visualize basic business performances and strategies for Pixar using Scrapy in Python. Investigated the reliability of reviews through various bias analysis. Visualized review contexts through word-clouds. - Created an R Shiny application to visualize suicide trends in major countries over the past thirty years. Produced interactive visualizations using Ggplot2 and Plotly, involving an animated times series to explore the relationship between suicide rate and GDP over time.
  • University Of Southern California
    Research Assistant
    University Of Southern California Oct 2017 - Dec 2018
    - Assisted in monitoring an online database of patient data. - Set up auto-monitoring reports of the most recent patient conditions using statistical software and Python.
  • Works Applications Co., Ltd.
    Consultant
    Works Applications Co., Ltd. Sep 2016 - Aug 2017
    Torrance, Ca
    - Facilitated the implementation of cloud-based ERP to clients through site visits.- Identified pain points in legacy systems and synthesized solutions to increase workflow efficiency.- Illustrated deliverables to end-users and channeled feedbacks to engineers.
  • Lawrence Berkeley National Laboratory
    Lab Assistant
    Lawrence Berkeley National Laboratory Nov 2014 - May 2015
    Berkeley, Ca
    - Prepared reagents and required chemicals for various experiments.- Cataloged, prepared and analyzed processed soil samples, reported results thereafter.

Nelson L. Education Details

Frequently Asked Questions about Nelson L.

What company does Nelson L. work for?

Nelson L. works for Walmart Global Tech

What is Nelson L.'s role at the current company?

Nelson L.'s current role is Senior Data Scientist at Walmart Technology.

What schools did Nelson L. attend?

Nelson L. attended University Of Southern California, University Of California, Berkeley, Pasadena City College.

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