Yuki Koyama

schoolNational Institute of Advanced Industrial Science and Technologybar_chart#1538 Global Rank

Total Papers

HCI Rank

#1538

Research Areas

Years Active

Recent Publications

Cooperative Design Optimization through Natural Language Interaction

Designing successful interactions requires identifying optimal design parameters. To do so, designers often conduct iterative user testing and exploratory trial-and-error. This involves balancing multiple objectives in a high-dimensional space, making the process time-consuming and cognitively demanding. System-led op…

CHI '255th+ AuthorGraphic Design & Typography Tools +1

FontCraft: Multimodal Font Design Using Interactive Bayesian Optimization

Creating new fonts requires a lot of human effort and professional typographic knowledge. Despite the rapid advancements of automatic font generation models, existing methods require users to prepare pre-designed characters with target styles using font-editing software, which poses a problem for non-expert users. To…

UIST '221st AuthorGenerative AI (Text, Image, Music, Video) +2

BO as Assistant: Using Bayesian Optimization for Asynchronously Generating Design Suggestions

Many design tasks involve parameter adjustment, and designers often struggle to find desirable parameter value combinations by manipulating sliders back and forth. For such a multi-dimensional search problem, Bayesian optimization (BO) is a promising technique because of its intelligent sampling strategy; in each iter…

UIST '222nd AuthorGenerative AI (Text, Image, Music, Video) +1

Photographic Lighting Design with Photographer-in-the-Loop Bayesian Optimization

It is important for photographers to have the best possible lighting configuration at the time of shooting; otherwise, they need post-processing on images, which may cause artifacts and deterioration. Thus, photographers often struggle to find the best possible lighting configuration by manipulating lighting devices,…

IUI '212nd AuthorGenerative AI (Text, Image, Music, Video) +2

Interactive Exploration-Exploitation Balancing for Generative Melody Composition

Recent content creation systems allow users to generate various high-quality content (e.g., images, 3D models, and melodies) by just specifying a parameter set (e.g., a latent vector of a deep generative model). The task here is to search for an appropriate parameter set that produces the desired content. To facilitat…

CHI '21CorrespondingShape-Changing Interfaces & Soft Robotic Materials +1

A Computational Approach to Magnetic Force Feedback Design

We present a computational approach to haptic design embedded in everyday tangible interaction with digital fabrication. To generate haptic feedback, the use of permanent magnets as the mechanism potentially contributes to simpleness and robustness; however, it is difficult to manually design how magnets should be emb…

CHI '181st AuthorForce Feedback & Pseudo-Haptic Weight +1

OptiMo: Optimization-Guided Motion Editing for Keyframe Character Animation

The mission of animators is to create nuanced, high-quality character motions. To achieve this, the careful editing of animation curves---curves that determine how a series of keyframed poses are interpolated over time---is an important task. Manual editing affords full and precise control, but requires tedious and no…

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