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Data Scientist - Risk
Mountain View, California
TikTok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy.
Job Description
Key Responsibilities： 
  1. Work with engineers to design machine learning solutions for anti-abuse systems 
  2. Partner with operatives to quickly respond to rapidly evolving threats
Basic Qualifications

Minimum Requirements： 
  1. BS degree in Computer Science, Computer Engineering, Electrical Engineering or other relevant majors with 2+ year of work experience 
  2. Solid technical / data-mining skills and ability to work with large volume data to detect and identify abusive actions in Bytedance products (e.g. TikTok) 
  3. Ability to think critically and to formulate solutions to problems in a clear, concise and timely manner 
  4. 2+ years of industry experience in predictive analytics and/or statistical modeling role
面
试
What is the difference between supervised and unsupervised machine learning?
What is bias, variance trade off ?
What is exploding gradients?
What is a confusion matrix?
Explain how a ROC curve works?
What is selection Bias ?
信息来源：
    https://www.tiktok.com
    https://towardsdatascience.com/top-30-data-science-interview-questions-7dd9a96d3f5c
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