Yecheng Gu | Saarland University (original) (raw)

Papers by Yecheng Gu

Proceedings of the 4th International Symposium on Pervasive Displays, 2015

Recent advances in virtual and augmented reality have led to the development of a number of simul... more Recent advances in virtual and augmented reality have led to the development of a number of simulations for different applications. In particular, virtual reality simulations for monitoring, evaluation, training, and education have started to emerge. In this work, we introduce a virtual reality environment that provides an immersive traffic simulation designed to observe behavior and monitor relevant skills and abilities of pedestrians who may be at risk, such as elderly persons with cognitive impairments. Methods for interaction using hand and arm gestures are complemented by passive, integrated eye tracking to allow for monitoring of cognition, reaction times, and behavior.

Authoring mathematical formulæ for ActiveMath is a challenge because it requires them to be seman... more Authoring mathematical formulæ for ActiveMath is a challenge because it requires them to be semantic, along the OpenMath standard and (extensible) set of symbols. The authoring environment of ActiveMath, jEditOQMath eases this by providing a readable linear syntax for formulæ input based on QMath. This paper approaches the support to authors to encode formulæ by bringing together several types of conversion methods into one smart paste approach. Such sources of formulæ as Wikipedia, and Planet Math are considered and start to work.

Children require practical roadside training to learn safe pedestrian behaviour. However, problem... more Children require practical roadside training to learn safe pedestrian behaviour. However, problems associated with exercising on real roads greatly restrict the opportunities to provide such training. This paper presents the results of a study on an alternative approach for practical safety training using a combination of Intelligent Tutoring and Virtual Reality. In a classroom experiment, children of second and third grades worked on virtual road crossing exercises. They received instructions and feedback according to several different strategies. We have observed a high general acceptance for this form of training and compared effects of different feedback strategies on children’s’ performance. The delayed feedback strategy has been the most successful; its impact has been especially notable on more advanced pedestrian safety skills that are the most challenging for the children of the target age.

Lecture Notes in Computer Science, 2015

Proceedings of the 20th International Conference on Intelligent User Interfaces Companion - IUI Companion '15, 2015

ABSTRACT Recent advances in virtual and augmented reality have led to the development of a number... more ABSTRACT Recent advances in virtual and augmented reality have led to the development of a number of simulations for different applications. In particular, simulations for monitoring, evaluation, training, and education have started to emerge for the consumer market due to the availability and affordability of immersive display technology. In this work, we introduce a virtual reality environment that provides an immersive traffic simulation designed to observe behavior and monitor relevant skills and abilities of pedestrians who may be at risk, such as elderly persons with cognitive impairments. The system provides basic reactive functionality, such as display of navigation instructions and notifications of dangerous obstacles during navigation tasks. Methods for interaction using hand and arm gestures are also implemented to allow users explore the environment in a more natural manner.

Proceedings of the companion publication of the 19th international conference on Intelligent User Interfaces - IUI Companion '14, 2014

This paper introduces a novel method for detecting and modeling intentions of students performing... more This paper introduces a novel method for detecting and modeling intentions of students performing training tasks in a Virtual Reality (VR) environment enhanced with intelligent tutoring capabilities. Our VR-setup provides students with an immersive user interface, but produces noisy and low-level input, from which we need to recognize higher-level cognitive information about the student. The complexity of this task is amplified by the requirements of the target domain (child pedestrian safety), where students need to train complex skills in dynamic settings. We present an approach for this task, which combines the logic-based Event Calculus (EC) and probabilistic modeling.

Lecture Notes in Computer Science, 2015

Proceedings of the 4th International Symposium on Pervasive Displays, 2015

Recent advances in virtual and augmented reality have led to the development of a number of simul... more Recent advances in virtual and augmented reality have led to the development of a number of simulations for different applications. In particular, virtual reality simulations for monitoring, evaluation, training, and education have started to emerge. In this work, we introduce a virtual reality environment that provides an immersive traffic simulation designed to observe behavior and monitor relevant skills and abilities of pedestrians who may be at risk, such as elderly persons with cognitive impairments. Methods for interaction using hand and arm gestures are complemented by passive, integrated eye tracking to allow for monitoring of cognition, reaction times, and behavior.

Authoring mathematical formulæ for ActiveMath is a challenge because it requires them to be seman... more Authoring mathematical formulæ for ActiveMath is a challenge because it requires them to be semantic, along the OpenMath standard and (extensible) set of symbols. The authoring environment of ActiveMath, jEditOQMath eases this by providing a readable linear syntax for formulæ input based on QMath. This paper approaches the support to authors to encode formulæ by bringing together several types of conversion methods into one smart paste approach. Such sources of formulæ as Wikipedia, and Planet Math are considered and start to work.

Children require practical roadside training to learn safe pedestrian behaviour. However, problem... more Children require practical roadside training to learn safe pedestrian behaviour. However, problems associated with exercising on real roads greatly restrict the opportunities to provide such training. This paper presents the results of a study on an alternative approach for practical safety training using a combination of Intelligent Tutoring and Virtual Reality. In a classroom experiment, children of second and third grades worked on virtual road crossing exercises. They received instructions and feedback according to several different strategies. We have observed a high general acceptance for this form of training and compared effects of different feedback strategies on children’s’ performance. The delayed feedback strategy has been the most successful; its impact has been especially notable on more advanced pedestrian safety skills that are the most challenging for the children of the target age.

Lecture Notes in Computer Science, 2015

Proceedings of the 20th International Conference on Intelligent User Interfaces Companion - IUI Companion '15, 2015

ABSTRACT Recent advances in virtual and augmented reality have led to the development of a number... more ABSTRACT Recent advances in virtual and augmented reality have led to the development of a number of simulations for different applications. In particular, simulations for monitoring, evaluation, training, and education have started to emerge for the consumer market due to the availability and affordability of immersive display technology. In this work, we introduce a virtual reality environment that provides an immersive traffic simulation designed to observe behavior and monitor relevant skills and abilities of pedestrians who may be at risk, such as elderly persons with cognitive impairments. The system provides basic reactive functionality, such as display of navigation instructions and notifications of dangerous obstacles during navigation tasks. Methods for interaction using hand and arm gestures are also implemented to allow users explore the environment in a more natural manner.

Proceedings of the companion publication of the 19th international conference on Intelligent User Interfaces - IUI Companion '14, 2014

This paper introduces a novel method for detecting and modeling intentions of students performing... more This paper introduces a novel method for detecting and modeling intentions of students performing training tasks in a Virtual Reality (VR) environment enhanced with intelligent tutoring capabilities. Our VR-setup provides students with an immersive user interface, but produces noisy and low-level input, from which we need to recognize higher-level cognitive information about the student. The complexity of this task is amplified by the requirements of the target domain (child pedestrian safety), where students need to train complex skills in dynamic settings. We present an approach for this task, which combines the logic-based Event Calculus (EC) and probabilistic modeling.

Lecture Notes in Computer Science, 2015