We introduce CrossY, a simple drawing application developed as a benchmark to demonstrate the feasibility of goal crossing as the basis for a graphical user interface. We show that crossing is not only as expressive a...
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Information-rich virtual environments (IRVEs) have been described as environments in which perceptual information is enhanced with abstract (or symbolic) information, such as text, numbers, images, audio, video, or hy...
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As we have moved to a more technology-based classroom, much attention has been paid to using computers to present material. computer-based presentations can be a powerful tool for faculty, but as more and more student...
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There are a wide variety of ways to present information at the front of a classroom. These include chalk on a blackboard, markers on a whiteboard, pens on transparencies, and computer projection systems. While compute...
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ISBN:
(纸本)1581137982
There are a wide variety of ways to present information at the front of a classroom. These include chalk on a blackboard, markers on a whiteboard, pens on transparencies, and computer projection systems. While computer-based presentation systems provide many opportunities both in and out of the classroom, there may also be many limitations. In-class spontaneity and dynamic exposition might be restricted. Class preparation time might increase dramatically when compared to the amount required to prepare handwritten materials. Certain presentation techniques may no longer be available. This paper will introduce a computer-based presentation system modeled on handwritten transparencies. It will then discuss how it addresses the above issues as well as how it can be used in and out of the classroom. These will be explored in the context of its use while teaching an undergraduate discrete mathematics course. Copyright 2004 ACM.
The fundamental question for an information-rich virtual environment is how to access and display abstract information. We investigated two existing navigation techniques: Hand-Centered Object Manipulation Extending R...
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The fundamental question for an information-rich virtual environment is how to access and display abstract information. We investigated two existing navigation techniques: Hand-Centered Object Manipulation Extending Ray-casting (HOMER) and Go-Go navigation, and two text layout techniques: within-the-world display (WWD) and heads-up display (HUD). Four search tasks were performed to measure participants' performance in a densely packed environment. HUD enabled significantly better performance than WWD and the Go-Go technique enabled better performance than the HOMER technique for most of the tasks. We found that using HOMER navigation combined with the WWD technique was significantly worse than other combinations for difficult naïve search tasks. Users also preferred the combination of Go-Go and HUD for all tasks.
We investigate how users interact with the results page of a WWW search engine using eye-tracking. The goal is to gain insight into how users browse the presented abstracts and how they select links for further explor...
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ISBN:
(纸本)1581138814
We investigate how users interact with the results page of a WWW search engine using eye-tracking. The goal is to gain insight into how users browse the presented abstracts and how they select links for further exploration. Such understanding is valuable for improved interface design, as well as for more accurate interpretations of implicit feedback (e.g. clickthrough) for machine learning. The following presents initial results, focusing on the amount of time spent viewing the presented abstracts, the total number of abstract viewed, as well as measures of how thoroughly searchers evaluate their results set.
We present Citrine, a system that extends the widespread copy-and-paste interaction technique with intelligent transformations, making it useful in more situations. Citrine uses text parsing to find the structure in c...
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We present how robustness and adaptivity can be supported by the spoken dialogue system architecture. AthosMail is a multilingual spoken dialogue system for e-mail domain. It is being developed in the EU-funded DUMAS ...
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We present how robustness and adaptivity can be supported by the spoken dialogue system architecture. AthosMail is a multilingual spoken dialogue system for e-mail domain. It is being developed in the EU-funded DUMAS project. It has flexible system architecture supporting multiple components for input interpretation, dialogue management and output generation. In addition to language differences, these components have great variation in their approaches for spoken interaction. For example, the dialogue management components implement different dialogue control models. The system architecture makes the interaction robust and adaptive by utilizing different approaches for spoken interaction in a single application by selecting suitable components at runtime.
There is demand for subjective metrics in spoken dialogue system evaluation. SERVQUAL is a service quality evaluation method developed by marketing academics. It produces a subjective measure of the gap between expect...
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There is demand for subjective metrics in spoken dialogue system evaluation. SERVQUAL is a service quality evaluation method developed by marketing academics. It produces a subjective measure of the gap between expectations and perceptions in five service quality dimensions common for all services. We present how the method was applied to spoken dialogue system evaluation. In order to improve the suitability of the original method, we modified the test questionnaire and the test process. We demonstrate how the modified method was successfully used in an evaluation of a telephone-based e-mail application. The evaluation gave us directions for further development of the system. In addition, we found some interesting phenomena, such as the variation between genders. We present how the method can be further improved, for example, by dividing the questionnaire into two parts.
Three-dimensional objects in many applications domains, such as architecture and construction, can be extremely complex and can consist of a large number of components. However, many of these complex objects also cont...
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