Zhixiu Liu

数学建模工程师 at SOTEREA 所托瑞安
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(386) 825-5501
Location
CN
Languages
  • French Limited working proficiency
Skills

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Credentials

  • Introduction to Data Science in Python
    Coursera
    Aug, 2019
    - Oct, 2024
  • Nanodegree Program
    Udacity
    Apr, 2019
    - Oct, 2024
  • DIPLOMA D'ETUDES EN LANGUE FRANCAISE - DELF B2
    Center Internationale D'Etudes Pedagogiques (CIEP)
    Aug, 2018
    - Oct, 2024

Experience

  • SOTEREA 所托瑞安
    • China
    • Motor Vehicle Manufacturing
    • 1 - 100 Employee
    • 数学建模工程师
      • Jul 2021 - Present

      •基于项目需求，运用SQL完成500+字段的开发和查验，并在阿里云实现每日自动调度和上线部署模型。 •运用Python或R语言，对日均上亿条数据进行清洗，包括缺失值、异常值等；并进行数据挖掘和特征工程，选择入模因子。 •使用XGBoost、神经网络等机器学习算法，评估和预测驾驶风险、疲劳程度和事故概率，从而提高预警准确率。 •专利：车辆行程处理方法、设备和存储介质；道路风险确定、设备和存储介质。 •基于项目需求，运用SQL完成500+字段的开发和查验，并在阿里云实现每日自动调度和上线部署模型。 •运用Python或R语言，对日均上亿条数据进行清洗，包括缺失值、异常值等；并进行数据挖掘和特征工程，选择入模因子。 •使用XGBoost、神经网络等机器学习算法，评估和预测驾驶风险、疲劳程度和事故概率，从而提高预警准确率。 •专利：车辆行程处理方法、设备和存储介质；道路风险确定、设备和存储介质。

  • WAKE FOREST UNIVERSITY BAPTIST MEDICAL CENTER
    • United States
    • Medical Practices
    • 1 - 100 Employee
    • 数据分析员
      • Feb 2020 - Mar 2021

      • Performs statistical data analyses, including validation of the accuracy and integrity of the statistical output. • Work with healthcare data systems, utilize hospital systems and database to update and analyze data. •运用Stata或R或MySQL，合并、分层、归类全美21个州的约1亿条医疗数据，以提供不同组群级别上的数据库。 •可视化统计结果，以热力地图、矩阵、箱线图等形式展现初步研究发现，并提出改进方案或研究计划。 •建立回归模型，应用T检验或F检验，研究公共健康政策对不同地域、年龄层、种族等的影响程度，最终发表在JAMA期刊。 •发表论文链接：https://www.researchgate.net/scientific-contributions/Zhixiu-Liu-2197407328 • Performs statistical data analyses, including validation of the accuracy and integrity of the statistical output. • Work with healthcare data systems, utilize hospital systems and database to update and analyze data. •运用Stata或R或MySQL，合并、分层、归类全美21个州的约1亿条医疗数据，以提供不同组群级别上的数据库。 •可视化统计结果，以热力地图、矩阵、箱线图等形式展现初步研究发现，并提出改进方案或研究计划。 •建立回归模型，应用T检验或F检验，研究公共健康政策对不同地域、年龄层、种族等的影响程度，最终发表在JAMA期刊。 •发表论文链接：https://www.researchgate.net/scientific-contributions/Zhixiu-Liu-2197407328

  • Cmind Inc
    • Canada
    • Software Development
    • 1 - 100 Employee
    • Data Engineer Intern
      • Sep 2019 - Feb 2020

      * Clean data into organized and completed condition. * Select financial indicators to form financial fraud model using multiple machine learning methods. * Analyze and visualize data to present comparable information to individual companies. * Clean data into organized and completed condition. * Select financial indicators to form financial fraud model using multiple machine learning methods. * Analyze and visualize data to present comparable information to individual companies.

  • Boston Medical Center (BMC)
    • United States
    • Hospitals and Health Care
    • 700 & Above Employee
    • Data Research Analyst
      • Nov 2019 - Jan 2020

      • Merge and collapse database to collect and calculate statistics that will be employed to research using Stata. • Clean unstructured data and organize database from multiple resources (eg. Inpatient and Emergency Department) to the united look. • Merge and collapse database to collect and calculate statistics that will be employed to research using Stata. • Clean unstructured data and organize database from multiple resources (eg. Inpatient and Emergency Department) to the united look.

  • The Wright Star LLC
    • Real Estate
    • 1 - 100 Employee
    • Data Analyst Intern
      • Sep 2019 - Dec 2019

      • Collected data from database website by crawling using Python to update dataset automatically. • Conducted research on financial ratios to select suitable variables that would improve current model performance. • Collected data from database website by crawling using Python to update dataset automatically. • Conducted research on financial ratios to select suitable variables that would improve current model performance.

  • Orich Medical Equipment (Tianjin) Co., Ltd
    • Intern
      • Jan 2018 - Mar 2018

      •Analyzed economic data on International trades in 5 countries such as Pakistan, Turkey and Philippines; promoted order of 20 mobile medical vehicles in Vietnam. •Conducted study on 3 top selling arch-rivals Samsung, Toshiba and Shimadzu to establish new entry strategy; cooperated with product department team of 10 to improve product design. •Integrated database in Excel; facilitated winning the bid of United Nations medical vehicles by accomplishing 2 pieces of biding documents of mobile units for open tender.

  • IGNITION EDUCATION LIMITED
    • United Kingdom
    • Advertising Services
    • Project Intern
      • Mar 2015 - May 2015

      •Collaborated with marketing team to sort out data among over 2000 questionnaires through dealing with missing values, scaling or standardizing, partitioning, visualizing, etc. in R. •Conducted desk research on market size estimation, market plan of channel building, revenue forecasting and consumer behavior analysis; integrated information in Excel. •Developed 2 key initiative assessment frameworks: initial pooling stage for considering its impact to value chain stakeholders, and prioritization matrix for mutual initiative linkage.

Education

  • Boston University
    Master of Arts - MA, Economics
    2018 - 2019
  • Tianjin Foreign Studies University
    Bachelor's degree, International Economics
    2014 - 2018

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