An important part of helping learners detect, repair and avoid software errors is providing semantic support for learners while they manipulate their code. Unfortunately, usability aspects of both textual and direct-m...
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An important part of helping learners detect, repair and avoid software errors is providing semantic support for learners while they manipulate their code. Unfortunately, usability aspects of both textual and direct-manipulation environments limit their ability to provide such support. Preliminary findings from exploratory studies are discussed, and several design requirements for a more flexible and supportive programming environment are identified
The HKUST word sense disambiguation systems benefit from a new nonlinear Kernel Principal Component Analysis (KPCA) based disambiguation technique. We discuss and analyze results from the Senseval-3 English, Chinese, ...
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In this paper, we introduce a new semi-supervised learning model for word sense disambiguation based on Kernel Principal Component Analysis (KPCA), with experiments showing that it can further improve accuracy over su...
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Increasingly, biology researchers and medical practitioners are using computational tools to model and analyze dynamic systems across scales from the macro to the cellular to the biochemical level. We are using Inform...
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ISBN:
(纸本)9781581138450
Increasingly, biology researchers and medical practitioners are using computational tools to model and analyze dynamic systems across scales from the macro to the cellular to the biochemical level. We are using Information-Rich Virtual Environments (IRVEs) to display the results of biological simulations, and to allow users to interact with those simulations. While simulation architectures, algorithms, and processing power have enjoyed continuous optimization to date, the user interfaces to these applications have not. The problems of designing such IRVE interfaces arise from the requirement that a variety of spatial and abstract information must be integrated into one coherent experience for the user. This paper explores the design and development issues encountered in our implementation of a bioinformatics application, PathSim (Pathogen Simulation). Specifically, we describe the information and interaction issues in building a front-end tool to visually analyze the results of an agent-based immunology simulation. Finally, we present custom scenegraph objects and consider candidate functionality for future standards components.
This paper presents a multi-biometric verification system that combines speaker verification, fingerprint verification with face identification. Their respective equal error rates (EER) are 4.3%, 5.1% and the range of...
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This paper presents a multi-biometric verification system that combines speaker verification, fingerprint verification with face identification. Their respective equal error rates (EER) are 4.3%, 5.1% and the range of (5.1% to 11.5%) for matched conditions in facial image capture. Fusion of the three by majority voting gave a relative improvement of 48% over speaker verification (i.e. the best-performing biometric). Fusion by weighted average scores produced a further relative improvement of 52%. We propose the use of fuzzy logic decision fusion, in order to account for external conditions that affect verification performance. Examples include recording conditions of utterances for speaker verification, lighting and facial expressions in face identification and finger placement and pressure for fingerprint verification. The fuzzy logic framework incorporates some external factors relating to face and fingerprint verification and achieved an additional improvement of 19%.
We present the use of layered probabilistic representations for modeling human activities, and describe how we use the representation to do sensing, learning, and inference at multiple levels of temporal granularity a...
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Projection technology typically places several constraints on the geometric relationship between the projector and the projection surface to obtain an undistorted, properly sized image. In this paper we describe a sim...
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We introduce a new method for disambiguating word senses that exploits a nonlinear Kernel Principal Component Analysis (KPCA) technique to achieve accuracy superior to the best published individual models. We present ...
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We explore and extend the metaphor of "piles" to include computationally-enriched piles, portable regions of automation in Dynapad, a multiscale workspace. We describe these collection-management tools and h...
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We explore and extend the metaphor of "piles" to include computationally-enriched piles, portable regions of automation in Dynapad, a multiscale workspace. We describe these collection-management tools and how their design was informed by observing people organizing collections of personal digital photographs
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