In electronic health (eHealth) research, limited insight has been obtained on process outcomes or how the use of technology has contributed to the users' ability to have a healthier life, improved well-being, or a...
详细信息
The use of electronic resources for the support of teaching and learning activities is growing very rapidly. A major advantage of having pedagogic materials in this form is that they can easily be 'recycled' t...
The use of electronic resources for the support of teaching and learning activities is growing very rapidly. A major advantage of having pedagogic materials in this form is that they can easily be 'recycled' to fulfil a number of different functions. This paper discusses how electronic lectures can be used to improve conventional lecture-based presentations and how they can then form the basis for the development of self-study material for the support of open and distance learning.
Communities in social networks emerge from interactions among individuals and can be analyzed through a combination of clustering and graph layout algorithms. These approaches result in 2D or 3D visualizations of clus...
详细信息
Communities in social networks emerge from interactions among individuals and can be analyzed through a combination of clustering and graph layout algorithms. These approaches result in 2D or 3D visualizations of clustered graphs, with groups of vertices representing individuals that form a community. However, in many instances the vertices have attributes that divide individuals into distinct categories such as gender, profession, geographic location, and similar. It is often important to investigate what categories of individuals comprise each community and vice-versa, how the community structures associate the individuals from the same category. Currently, there are no effective methods for analyzing both the community structure and the category-based partitions of social graphs. We propose group-In-a-Box (GIB), a meta-layout for clustered graphs that enables multi-faceted analysis of networks. It uses the tree map space filling technique to display each graph cluster or category group within its own box, sized according to the number of vertices therein. GIB optimizes visualization of the network sub-graphs, providing a semantic substrate for category-based and cluster-based partitions of social graphs. We illustrate the application of GIB to multi-faceted analysis of real social networks and discuss desirable properties of GIB using synthetic datasets.
Detecting genetic aberrations is crucial in cancer diagnosis, typically through fluorescence in situ hybridization (FISH). However, existing FISH image classification methods face challenges due to signal variability,...
详细信息
In this paper, we propose a new information theoretic network growing algorithm. The new approach is called greedy information acquisition, because networks try to absorb as much information as possible in every stage...
详细信息
In this paper, we propose a new information theoretic network growing algorithm. The new approach is called greedy information acquisition, because networks try to absorb as much information as possible in every stage of learning. In the first stage, two competitive units compete with each other by maximizing mutual information. In the successive stages, new competitive units are gradually added and information is maximized. Through greedy information maximization, different sets of important features in input patterns can be cumulatively discovered in successive stages. We applied our approach to a language classification problem. Experimental results confirmed that different features in input patterns are gradually discovered.
This position paper describes the human-computerinteraction (HCI) field studies component of the multidisciplinary Patient Records Enhancement Project (PREP). PREP seeks to understand variability of data found in pri...
详细信息
This position paper describes the human-computerinteraction (HCI) field studies component of the multidisciplinary Patient Records Enhancement Project (PREP). PREP seeks to understand variability of data found in primary care electronic records, in particular the balance between coded data and doctor's 'free text' notes. HCI fieldwork will establish variables that affect recording practices. In field studies we observe and record data recording practices in general practice (GP) surgeries, interview staff, video consultations with real patients and video consultations with standardized patients (played by medical actors). By standardizing patients we can compare the impact of other variables: different doctors, in different surgeries, using different e-health systems. Our early findings suggest that variability is due to a complex web of reasons, driven by personal, contextual and organizational processes. Findings from thematic analysis will result in design implications for studies by epidemiologists and public health researchers, design of NHS training and work processes, and design of electronic health record interfaces.
User experience (UX) is still an elusive notion with many different definitions, despite some recent attempts to develop a unified view on UX. The lack of a shared definition of UX not only confuses or even misleads c...
详细信息
User experience (UX) is still an elusive notion with many different definitions, despite some recent attempts to develop a unified view on UX. The lack of a shared definition of UX not only confuses or even misleads customers of a product/service but also undermines the effectiveness of researching, managing and teaching UX. Diverse ideas have been generated in scientific activities that aim to develop a common understanding about the meaning and scope of UX. It is plausible, with sound methodologies, to converge these divergences, driving the UX community closer to a common definition and integrated views of UX. This SIG tackles this challenge by systematically assembling a set of existing definitions and viewpoints of UX and collecting opinions on them from known UX experts/researchers and general CHI'08 attendees.
This position paper describes the human-computerinteraction (HCI) field studies component of the multidisciplinary Patient Records Enhancement Project (PREP). PREP seeks to understand variability of data found in pri...
详细信息
暂无评论