Guy Hoffman

schoolCornell Universitybar_chart#1097 Global Rank

Total Papers

HCI Rank

#1097

Research Areas

Years Active

Recent Publications

"When We're Looking at the Robot, We See Each Other": A Comparison of Robotic, Mirror-Based, and Hybrid Interventions for Stranger Interaction

Eye contact between strangers, even fleeting, can spark interaction and foster connection, happiness, and belonging. Yet in public spaces, such encounters are often suppressed by “civil inattention,” with many people absorbed in their phones. We explore how reconfiguring the ambient environment with MirrorBot, a mobil…

AUTO_UI '25CorrespondingAutomated Driving Interface & Takeover Design +3

Simulating Multiple Road User Perspectives on Autonomous Vehicle Behaviors

This work presents a system and a study in which we have multiple road users interact simultaneously with an autonomous vehicle (AV) in a virtual reality (VR) environment. We go beyond studying dyadic interactions (e.g., AV-pedestrian or AV-driver) to involve a pedestrian, a human driver, and an AV passenger all joint…

DIS '24CorrespondingShape-Changing Interfaces & Soft Robotic Materials

Designing Plant-Driven Actuators for Robots to Grow, Age, and Decay

Designing plant-driven actuators presents an opportunity to create new types of devices that grow, age, and decay, such as robots that embody these qualities in their physical structure. Plant-robot hybrids that grow and decay incorporate unpredictable and gradual transformations inherent across living organisms and…

CHI '245th+ AuthorVibrotactile Feedback & Skin Stimulation +2

Conveying Emotions through Shape-changing to Children with and without Visual Impairment

Shape-changing skin is an exciting modality due to its accessible and engaging nature. Its softness and flexibility make it adaptable to different interactive devices that children with and without visual impairments can share. Although their potential as an emotionally expressive medium has been shown for sighted adu…

HRI '245th+ AuthorHonorable MentionHaptic Wearables +2

"I'm not touching you. It's the robot! ": Inclusion through a Touch-based Robot among Mixed-Visual Ability Children

Children with visual impairments often struggle to fully participate in group activities due to limited access to visual cues. They have difficulty perceiving what is happening, when, and how to act—leading to children with and without visual impairments being frustrated with the group activity, reducing mutual intera…

HRI '23CorrespondingUncertainty Visualization +1

Nudging or Waiting? Automatically Synthesized Robot Strategies for Evacuating Noncompliant Users in an Emergency Situation

Robots have the potential to assist in emergency evacuation tasks, but it is not clear how robots should behave to evacuate people who are not fully compliant, perhaps due to panic or other priorities in an emergency. In this paper, we compare two robot strategies: an actively nudging robot that initiates evacuation a…

DIS '215th+ AuthorSocial Robot Interaction

What Robots Need From Clothing

Most robots are unclothed. However, we believe that robot clothes present an underutilized opportunity for the field of designing interactive systems. Clothes can help robots become better robots––by helping them be useful in a new, wider array of contexts, or better adapt and function in the contexts they are already…

DIS '21CorrespondingTeleoperated Driving +2

Hammers for Robots: Designing Tools for Reinforcement Learning Agents

In this paper we explore what role humans might play in designing tools for reinforcement learning (RL) agents to interact with the world. Recent work has explored RL methods that optimize a robot's morphology while learning to control it, effectively dividing an RL agent's environment into the external world and the…

HRI '20CorrespondingHuman-Robot Collaboration (HRC)

MoveAE: Modifying Affective Robot Movements Using Classifying Variational Autoencoders

We propose a method for modifying affective robot movements using neural networks. Social robots use gestures and other movements to express their internal states. However, a robot’s interactive capabilities are hindered by the predominant use of a limited set of preprogrammed or hand-animated behaviors, which can be…

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