[**:house: Home**](https://hackmd.io/s/rkkDP_l4M) | :boy: **About** | [**:microscope: Researches**](https://hackmd.io/s/rJPFNKlVz) | [**:rocket: Side projects**](https://hackmd.io/s/H1aS2qe4G) | [**:airplane: Life gallery**](https://hackmd.io/s/HJN4JslNM)
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# <div style="text-align: center;" markdown="1">About me </div>
<div style="text-align: center;" markdown="1"><img src="https://www.dropbox.com/scl/fi/ic7ms4c3rk8h6219q98xh/2022.jpg?rlkey=9wyhfm43zd4t5v32ygg39m1zc&raw=1" height="486" width="364"></div>
## Personal information
Nationality: Taiwan (R.O.C.)
Birth date: July 1989
Contact: <juifa.tsai@gmail.com.nospam>
Academic Record : [INSPIRE Profile](http://inspirehep.net/author/profile/J.F.Tsai.1)
**[Resume download](https://www.dropbox.com/scl/fi/de2l474c4qxxckne3p170/resume_jui-fa_tsai_DSL.pdf?rlkey=opn3tk2r2vphmj2lxtti45lb7&dl=0) / [履歷下載](https://www.dropbox.com/scl/fi/de2l474c4qxxckne3p170/resume_jui-fa_tsai_DSL.pdf?rlkey=opn3tk2r2vphmj2lxtti45lb7&dl=0)** :inbox_tray:
## 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**](https://drive.google.com/file/d/0B2AjDWrBgcpMRVlfbTUwNjBqeDg/view?usp=sharing), European Organization for Nuclear Research (CERN), *Geneva, Switzerland*
- *2011 - 2017* - [**Ph.D of Physics**](https://drive.google.com/file/d/0B2AjDWrBgcpMbERmei1Gc3YxN28/view?usp=sharing), National Taiwan University (NTU), *Taipei, Taiwan (R.O.C.)*
- *2007 - 2011* - [**Bachelor of Science, Physics**](https://drive.google.com/file/d/0B2AjDWrBgcpMczY4MlcxMGI5a2M/view?usp=sharing), 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.
3. **Programing languages** : *C++/C, python, LATEX, Linux bash/tcsh shell, PostgreSQL*
4. **Analytic Softwares/machine learning** :
* [ROOT.CERN](https://en.wikipedia.org/wiki/ROOT), *scikit-learn, matplotlib, numpy, pandas, [tkinter](https://wiki.python.org/moin/TkInter)*, *pgRouting*, *pytorch*.
* *Adobe Illustrator* and *Photoshop*.
5. **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**](https://www.facebook.com/NTUDAC/), [*interview*](https://hackmd.io/@cN0wHbxqQ52iMSByxQI6CQ/BJ3SSXzmK)
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**](https://www.facebook.com/NTUDAC/), [*career sharing*](https://hackmd.io/@cN0wHbxqQ52iMSByxQI6CQ/BJlrv7M7Y)
Share the correlation of 9 variated analytic positions in the industrial.
* [**2019 - Taiwan R User Group / MLDM Monday**](https://www.meetup.com/Taiwan-R/events/264959486/), [*tutorial talk*](https://hackmd.io/@cN0wHbxqQ52iMSByxQI6CQ/S1VbcQG7Y)
Introduce the theory and python implementation of *Kriging Interpolation* learning algorithm.
* [**2019 - Wufeng Elementary School 霧峰國民小學**](https://www.facebook.com/NTUDAC/), [*popular scientific sharing*](https://hackmd.io/@cN0wHbxqQ52iMSByxQI6CQ/Skmp67GQF)
Share the particle physics at CERN and how to be a good scientist.
* [**2017 - Annual Meeting of the Physical Society of Taiwan**](http://psroc2017.conf.tw/site/page.aspx?pid=901&sid=1136&lang=cht), [*oral talk*](http://psroc2017.conf.tw/site/order/1136/paperpreview.aspx?pid=0125)
Data-analysis result of top-quark CP violation, on behalf of NTU.
* [**2016 - 38th International Conference on High Energy Physics (ICHEP)**](https://indico.cern.ch/event/432527/), [*parallel talk*](https://pos.sissa.it/cgi-bin/reader/contribution.cgi?id=282/661)
Data-analysis summery of top-quark properties, on behalf of CERN-CMS.
* [**2015 - 121st CERN-LHC Collaboration (LHCC) Meeting**](https://indico.cern.ch/event/373417/), [*poster session*](https://indico.cern.ch/event/369822/#21-search-for-pair-produced-ve)
Data-analysis result of b’ quark to b quark and Higgs, on behalf of CERN-CMS.
* [**2014 - European School of High-Energy Physics (ESHEP)**](http://physicschool.web.cern.ch/PhysicSchool/eshep/eshep2014/), [*certificate*](https://drive.google.com/file/d/0B2AjDWrBgcpMNDJ4NWl0RWwwSFE/view?usp=sharing)
Attended 33 lectures for the techniques and statistics of data analysis and physics.
* [**2012 - Novell Certified Linux Administrator (CLA) 11**](https://training.suse.com/certification/sca-linux/), [*certificate*](https://www.dropbox.com/s/9i1q0hijaedmgxq/NCLA_Certificate.jpg?dl=0)
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](http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0001-2301201711464200)
As member of CMS collaboration I am a co-author of over 200 physics data-analysis papers (see [INSPIRE-HEP database](http://inspirehep.net/author/profile/J.F.Tsai.1)). 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](https://link.springer.com/article/10.1007%2FJHEP03%282017%29101)
- "***Top properties measurements with the CMS detector at the LHC***", *J.f. Tsai* et al., [PoS(ICHEP2016)661](https://pos.sissa.it/cgi-bin/reader/contribution.cgi?id=282/661)
- "***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](http://cds.cern.ch/record/2138504?ln=en)
- "***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](https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.112009)
## Habits
Biking, Football, hiking, travel, illustrate, and snowboarding.
<br>
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[:ghost: Github](https://github.com/juifa-tsai) | [:busts_in_silhouette: Linkedin ](https://www.linkedin.com/in/jui-fa-tsai-08ba0a93)
<!--
## Experience
* **During Ph.D program**
* Major in **high-energy/particle physics** experiment.
* Use **machine learning** to analyze the data from CERN-LHC proton-proton collision for searching physics.
* Deal with the **statistics** problem in data analysis.
* **Visualize** data performance.
* **Algorithm** building.
* Team & project **leader**.
* Work & magane in **big international collabration** for physics analysis & detector-related projects.
* Good skills in **documentation**, **presentation** & **communication**.
* Good ability & attitude for **solving** any problem.
* **Involved projects/publications**
* Data analysis in Ph.D program
- [CPV top](ref: paper, github & thesis)
- [Double b-tagging](ref: CMS-NOTE pdf @ dropbox)
- [Search b’-quark pair decay to b-quark & Higgs-boson](https://hackmd.io/s/S1mZHTeNb)
- [Alignment algorithm of CMS-Preshower detector](https://hackmd.io/s/B1DKRSJNb)
- [BTagging commissioning](https://cds.cern.ch/record/2160345/files/DP2016_018.pdf)
* Hardware project in Ph.D program
- CMS-Phase 1, BPixel upgrade assamble
- Thermal cycling qualifiction , GUI design (ref: github GUI & thesis) -->