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About me

Personal information

Nationality: Taiwan (R.O.C.)
Birth date: July 1989
Contact: [e-mail]
Academic Record : INSPIRE Profile

Resume download / 履歷下載

Education & experience

• 2024 - present - Data Science Leader, IBM, Taipei, Taiwan (R.O.C.)
• 2022 - 2024 - Data Science Lead, Gogoro, Taipei, Taiwan (R.O.C.)
• 2018 - 2022 - Senior Data Scientist, Gogoro Network, Taipei, Taiwan (R.O.C.)
• 2013 - 2017 - Visiting Scientist, European Organization for Nuclear Research (CERN), Geneva, Switzerland
• 2011 - 2017 - Ph.D of Physics, National Taiwan University (NTU), Taipei, Taiwan (R.O.C.)
• 2007 - 2011 - Bachelor of Science, Physics, National Sun Yat-sen University (NSYSU), Kaohsiung, Taiwan (R.O.C.)

Technical Skills

1. Speciality
   • Machine Learning
   • Data-analysis pipeline building:
     feature analysis, background noise estimation, model prediction, validation, systematic uncertainty study.
   • Statistical method:
     maximum likelihood, minimum chi-square, data-driven method (ABCD method), multivariate-analysis method (Fisher, BDT), hypothesis test (upper limit, goodness of fit, ROC).
   • High-energy experimental physics, particle physics, quantum mechanics and silicon detector development.
   • Geographical statistics.
2. Programing languages : C++/C, python, LATEX, Linux bash/tcsh shell, PostgreSQL
3. Analytic Softwares/machine learning :
   • ROOT.CERN, scikit-learn, matplotlib, numpy, pandas, tkinter, pgRouting, pytorch.
   • Adobe Illustrator and Photoshop.
4. Languages :
   • Taiwanese (Native), Mandarin (Native), English (Fluent), French (Basic

Talks & certificates

• 2021 - NTU Data Analytics Club 臺大資料分析與決策社, interview
  Share the experience from a physicist to a data scientist at gogoro network.
• 2021 - NTU Data Analytics Club 臺大資料分析與決策社, career sharing
  Share the correlation of 9 variated analytic positions in the industrial.
• 2019 - Taiwan R User Group / MLDM Monday, tutorial talk
  Introduce the theory and python implementation of Kriging Interpolation learning algorithm.
• 2019 - Wufeng Elementary School 霧峰國民小學, popular scientific sharing
  Share the particle physics at CERN and how to be a good scientist.
• 2017 - Annual Meeting of the Physical Society of Taiwan, oral talk
  Data-analysis result of top-quark CP violation, on behalf of NTU.
• 2016 - 38th International Conference on High Energy Physics (ICHEP), parallel talk
  Data-analysis summery of top-quark properties, on behalf of CERN-CMS.
• 2015 - 121st CERN-LHC Collaboration (LHCC) Meeting, poster session
  Data-analysis result of b’ quark to b quark and Higgs, on behalf of CERN-CMS.
• 2014 - European School of High-Energy Physics (ESHEP), certificate
  Attended 33 lectures for the techniques and statistics of data analysis and physics.
• 2012 - Novell Certified Linux Administrator (CLA) 11, certificate
  Passed international certification for Linux-server system.

Publications

The physics dissertation of NTU specialize the data analysis of high-energy experimental physics, which is about the measurement of the new property of top quark, and the silicon detector development.

• "Search for CP violation in top quark-antiquark production and decay in proton- proton collisions", J.f. Tsai, doi:10.6342/NTU201700205

As member of CMS collaboration I am a co-author of over 200 physics data-analysis papers (see INSPIRE-HEP database). I have made particularly important contributions to the following:

• "Search for CP violation in tt production and decay in proton-proton collisions at √s= 8 TeV", J.f. Tsai and CMS collaboration, JHEP 03 (2017) 101
• "Top properties measurements with the CMS detector at the LHC", J.f. Tsai et al., PoS(ICHEP2016)661
• "Identification of b quark jets at the CMS Experiment in the LHC Run 2", J.f. Tsai and CMS collaboration, CMS PAS BTV-15-001
• "Search for pair-produced vector-like B quarks in proton-proton collisions at √s=8 TeV", J.f. Tsai and CMS collaboration, Phys. Rev. D 93 (2016) 112009

Habits

Biking, Football, hiking, travel, illustrate, and snowboarding.

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