I develop intelligent programming tools that enable real-time assistance for programmers, learners, and end-users to increase their productivity and learning gain. In particular, my research studies challenges that developers face, and designs systems to address these challenges. These sysems can enable personalized help in nearly real time, provide feedback to learners at scale, make communication more effective, more effectively use human effort to progressively automate machine, and coordinate teams to more efficiently collaborate, which neither computers nor humans can effectively solve alone.
Yan Chen is an Assistant Professor of Computer Science at Virginia Tech (USA) where he directs the Programming with Intelligent Machines & Environments Lab (PRIME). Yan is active in the Human-Computer Interaction (HCI) research community. His research spans programming support tools, software engineering, crowdsourcing, and CS education. His work has been published at top HCI conferences, including ACM CHI, UIST, and CSCW. He received the Best Short Paper award at VL/HCC 2020 and the Best Paper Honorable Mention Award at UIST 2022. Yan was a Postdoctoral Fellow at the University of Toronto (Canada), working with Tovi Grossman. He received his Ph.D. degree, advised by Steve Oney, from the University of Michigan (USA), and BS and MS degrees in Applied Math and Electrical & Computer Engieering from the University of Colorado, Boulder (USA).
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VizProg presents an innovative, real-time visualization system that meaningfully displays class-wide students' coding progress, making it simple for programming instructors to pinpoint issues and mistakes.
Thoughts: The challenge of delivering programming education at scale is exacerbated by factors such as real-time instruction, a large student population, novice learners, and the complexity of the material being taught. To enhance the classroom experience for students and simplify the task for instructors, how can we make programming education more engaging and manageable?
SemanticOn enables users to specify visual and textual semantic conditions in web automation programs by natural language description and content highlighting.
Thoughts: SemanticOn only considers 1-1 mapping between user intents and UI actions. How can we support other kinds of mappings? How can we design PbD systems are more trustworthy?
To scale programming support in a large live classroom, PuzzleMe coordinates students to help each other by exchanging test cases and problem-solving approaches for coding exercises.
Teleoperators can use Mimic to program robots by demonstration and reuse demonstrations in new context
Asteroids explores a new space of remote physical task learning via telepresence robots
Explores the motivations/barriers/opportunities of live streaming programming as compared to pre-recorded video through interviews with 14 streamers & 12 viewers.
Thoughts: What can we do to enhance the learning experience in an online environment by adopting the in-person social features that a physical library has? What can be done to support different social needs in an online learning context in order to enhance learning outcomes?
Umitation enables web developers to perform "copy-and-paste" (retarget) interaction on web front-end UI behaviors with a trigger-object-response framework.
CoCapture allows designers to create UI behavior mockups on existing web interfaces by demonstrating and remixing, and to accurately describe their requests to developers by referencing the resulting mockups using hypertext.
Bashon introduces a crowdsourcing approach to help make program synthesis systems more robust, reliable, and trustworthy, and reduces the cost of downstream data collection for training a program synthesis system.
EdCode applies a semi-asychronous on-demand help seeking model in a learning setting, aiming towards provide more personalized support at scale.
Two techniques, interactive event-flow graphs and GUI-level guidance, that guide GUI testers to discover more test cases and avoid duplicate test cases.
Sifter improves the video curation process by combining automated techniques with a human-powered two-stage pipeline that browses, selects, and reaches an agreement.
CodeOn enables effective task hand-offs between developers and remote helpers by allowing asynchronous responses to on-demand requests.
Explore the types and causes of the coordination costs for transient software teams when using existing collaborative programming tools: a VCS and a shared editor.
Two studies that present the opportunities and the design recommendations of on-demand remote support systems for developers.
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