Wonjung Kim

Ph.D. StudentNC Lab.

School of Computing, KAISTemail: wjkim@nclab.kaist.ac.krweb: https://wonjung.gitlab.io

Summary

I am pursuing a doctoral degree in computer science, under the supervision of Prof. Junehwa Song. Myresearch interests lie broadly in the areas of mobile-IoT systems, social computing and HCI. In particular,my research has focused on interactive & intelligent services for real-life social interactions, and systemsupport for such services (e.g., developer tools). Recently, I am interested in computational support forenriching everyday face-to-face interaction. I enjoy implementing working systems and applications forreal deployment. My research has been published in premier conferences such as MobiSys, UbiComp,CSCW. I worked at LiveLabs, Singapore Management University as a research intern in 2017.

Education

2017 - present Ph.D. student in Computer Science, KAIST (Advisor: Prof. Junehwa Song)2015 - 2016 M.S. in Computer Science, KAIST (Advisor: Prof. Junehwa Song)2011 - 2014 B.S. in Mathematical Science (Double major: Computer Science), KAIST

Publications

Conferences

2019 C.1 Quentin Roy, Camellia Zakaria, Simon Tangi Perrault, Mathieu Nancel, Wonjung Kim,Archan Misra, Andy Cockburn. 2019. A Comparative Study of Pointing Techniquesfor Eyewear Using a Simulated Pedestrian Environment, In Proceedings of the 17th IFIPTC 13 International Conference on Human-Computer Interaction (INTERACT ’19). [PDF]

2018 C.2 Wonjung Kim, Kenny Choo Tsu Wei, Youngki Lee, Archan Misra, Rajesh KrishnaBalan. 2017. Empath-D: VR-based Empathetic App Design for Accessibility. In Pro-ceedings of the 16th Annual International Conference on Mobile Systems, Applications, andServices (MobiSys ’18). [ACM DL]

2017 C.3 Bumsoo Kang, Chulhong Min, Wonjung Kim, Inseok Hwang, Chunjong Park, Se-ungchul Lee, Sung-Ju Lee, Junewha Song. 2017. Zaturi: We Put Together the 25thHour for You. Create a Book for Your Baby. In Proceedings of the 19th ACM conferenceon Computer supported cooperative work & social computing (CSCW ’17). [ACM DL]

2016 C.4 Chulhong Min, Seungchul Lee, Changhun Lee, Youngki Lee, Seungwoo Kang, Seung-pyo Choi, Wonjung Kim, Junehwa Song. 2016. PADA: power-aware development as-sistant for mobile sensing applications. In Proceedings of the 2016 ACM InternationalJoint Conference on Pervasive and Ubiquitous Computing (UbiComp ’16). [ACM DL]

Wonjung Kim 2

Journal Articles

2020 J.1 Wonjung Kim*, Seungchul Lee*, Seonghoon Kim, Sungbin Jo, Chungkuk Yoo, InseokHwang, Seongwoo Kang, and Junehwa Song (* Co-primary authors). 2020. Dyadic Mir-ror: Everyday Second-person Live-view for Empathetic Reflection upon Parent-childInteraction, In Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous(IMWUT). (presented at UbiComp ’20, Best Presentation Judges Award Nomination )[ACM DL]

Workshops

2020 W.1 Chungkuk Yoo, Seungwoo Kang, Inseok Hwang, Chulhong Min, Seonghoon Kim,Wonjung Kim, and Junehwa Song. 2019. Mom, I see You Angry at Me! Designing aMobile Service for Parent-child Conflicts by In-situ Emotional Empathy. In Proceed-ings of the 5th ACM Workshop on Mobile Systems for Computational Social Science (MCSS’19). [ACM DL]

Adjunct (Demos and Posters)

2020 A.1 Wonjung Kim, Seungchul Lee, Seonghoon Kim, Sungbin Jo, Chungkuk Yoo, InseokHwang, Seongwoo Kang, and Junehwa Song. 2020. Computational Support for Fa-cilitating Parental Reflective Functioning in Everyday Parent-child Interaction. InProceedings of the 2020 ACM International Joint Conference on Pervasive and UbiquitousComputing (UbiComp ’20) [ACM DL]

2018 A.2 Wonjung Kim, Kenny Choo Tsu Wei, Youngki Lee, Archan Misra, Rajesh KrishnaBalan. 2017. Demo: Empath-D: VR-based Empathetic App Design for Accessibility.In Proceedings of the 16th Annual International Conference on Mobile Systems, Applications,and Services Companion (MobiSys ’18). [ACM DL]

2017 A.3 Bumsoo Kang, Wonjung Kim, Inseok Hwang, Chunjong Park, Seungchul Lee, Chul-hong Min, Sung-Ju Lee, Junewha Song. 2017. Demo: Zaturi: Blending Hours Spent atWorkand Hours Devoted to Children. In the 19th ACM conference on Computer supportedcooperative work & social computing (CSCW ’17 Companion). [ACM DL]

Patents

2019 P.1 System and method of determining micro spare time using sensor of mobile apparatus.Korea Patent Pending, Application No. 10-2019-0174436, Application Date: Dec. 24,2019

2018 P.2 A system and apparatus for asynchronous baby care by utilizing micro spare time.Korea Patent, No. 10-2061619, Issue Date: Dec. 26, 2019 (Application Date: Feb. 23,2018, Application No. 10-2018-0021763)

2017 P.3 Method and system of supporting power-aware mobile application development con-sidering power consumption in real-life situations.Korea Patent, No. 10-2045892. Issue Date: Nov. 12, 2019, (Application date: Sep. 12,2017, Application No.: 10-2017-0116687)

Projects

Research projects

Everyday second-person live-view for empathetic reflection of parent-child interaction [W.1] [J.1] [A.1]

Wonjung Kim 3

• Parent-child interaction is a day-to-day continuation of inevitable conflicts and negotiations. Whatwould happen if parents see their angry face in conflict situations?. We propose DyadicMirror, a smartmirror that fosters in-situ reflective functioning by enabling the parents to see their own face in theperspective of their children.

• I am the principal investigator of this ongoing project. I developed a working prototype of DyadicMir-ror. I implemented of an Android app and designed a form factor. I have been conducting a 4-weekdeployment study with 6 families.

Figure 1: Overview of Empath-D

Sentence to read

Play buttons for three recent recordings

(a) Notification

Book title

(c) Book recording UI(b) Book list UI

Recording progress

Swipe to move pages

Figure 2: Screenshots of Zaturi client

VR-based realistic emulation of app interaction and impairments for empathetic app design [C.2] [A.2]

• It is essential to ensure that application interfaces are usable by users, such as the elderly, with vari-ous impairments (e.g., visual, audio and motor). We propose Empath-D, a system that facilitates appdesigners, in-situ, to rapidly evaluate the usability of their apps, from the perspective of impairedusers in VR.

• I was the principal investigator of the project. I developed a working prototype on Samsung GearVR, Android smartphone and Intel RealSense.

• Link: [Video demo]

Enabling working parents to utilize micro spare time for their baby [C.3] [A.3] [P.2] [P.1]

• We propose Zaturi, a mobile service enabling parents to create an audio book, in their own voice, fortheir babies by utilizing micro spare time at work–e.g., waiting for an elevator (Figure 2). It opens upa new way to devote time to children in workplace without compromising the quality and quantityof working hours.

• I designed and developed a working prototype of the Zaturi service, running on a smartphone, atablet, and a server collaboratively (Figure 2). For the implementation of an Android application for asmartphone and a tablet, I designed UIs for book recording and playing. I also implemented severalsimple context recognition modules to notify users of their micro spare time at work, e.g., walkingalone and long use of a smartphone. I also participated in designing and conducting a two-weekdeployment study with ten families.

Wonjung Kim 4

• Link: [Video demo]

Supporting power-aware development of mobile sensing applications [C.4] [P.3]

• Developing mobile sensing applications (MSAs) demands the significant time and effort for repet-itive power measurements to deal with various real-world usage scenarios. We propose PADA, adeveloper tool that provides enriched power information under diverse usage scenarios withoutrunning apps on real phones in real-life situations.

• I conducted two developer studies; the one for power-aware implementation with 14 developers andthe other for power tuning with 5 developers. I also implemented two Android MSAs that were usedin the evaluation; SocioHotspot, social hotspot detector and iTrack, energy-efficient path tracker.

• Link: [Video demo], [Web demo]

Service development projects

KAIST BAB

• KAIST BAB1 is a service to help university students choose their meals. The service offers openinghours and menus for university cafeterias and nearby restaurants. It also allows the users to rate therestaurants and share their reviews. It started as a school club project targeting a single university.As of 2017, the service supports around 300 universities and has more than 6,500 daily active users.

• I designed and developed the iOS client.

• Link: [Web] [App Store] [Google Play]

Programming Skills

• Programming language: Python, Kotlin, JavaScript, Java, C#, Swift, Objective-C, C, C++

• OS/Platform: Android, Linux (Ubuntu), iOS

• Web development: Flask, Django, React

• Computer vision: OpenCV

• Machine learning: LightGBM, XGBoost, Keras, scikit-learn, NumPy, SciPy

• VR: Unity, HTC Vive, Samsung Gear VR

Honors and Awards

Graduate Study Scholarship, Korea Foundation for Advanced Studies ($35,000 equiv.) 2018-ESCamp Hackathon, 1st prize 2015KAIST CS dept.-Kakao Hackathon, 2nd prize 2015

K-NEST Camp, 1st prize 2015

1‘BAB’ is a Korean word which means ‘meal’.

Wonjung Kim 5

Activities

May. 2020 External reviewer, Proceedings of the ACM Interactive, Mobile, Wearableand Ubiquitous Technologies (IMWUT)

Aug. 2019 External reviewer, Proceedings of the ACM Interactive, Mobile, Wearableand Ubiquitous Technologies (IMWUT)

Jun. 2019 Student volunteer, MobiSysJun. 2018 Invited talk at Bell Labs, Cambridge: “Empath-D: VR-based Empathetic App Design for Accessibility”

2015 Student volunteer, SenSys2012-2015 Member, Include, Mobile application development club in KAIST

Teaching Experience

2019 Operating Systems and Lab (Pintos project), TA, KAIST2019 Introduction to Programming, TA, KAIST2019 Two-day Android Programming Tutorial, Lecturer, Seoul National University2018 Operating Systems and Lab (Pintos project), TA, KAIST2016 Special Topics in Computer Science<Another Side of Computer Science: Critique and Framing>, TA, KAIST2015 Operating Systems and Lab (Pintos project), TA, KAIST

References

Junehwa Song, Ph.D.ProfessorSchool of Computing, KAISTDaejeon, Republic of Koreajunesong@nclab.kaist.ac.kr

Archan Misra, Ph.D.ProfessorSchool of Information Systems, Singapore Manage-ment UniversitySingapore, Singaporearchanm@smu.edu.sg

Youngki Lee, Ph.D.Assistant ProfessorDept. of Computer Science and Engineering, SeoulNational UniversitySeoul, Republic of Koreayoungkilee@snu.ac.kr

Rajesh Krishna Balan, Ph.D.Associate ProfessorSchool of Information Systems, Singapore Manage-ment UniversitySingapore, Singaporerajesh@smu.edu.sg