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Publications (287)
Background
Visualising patient genomic data in a cohort with embedding data analytics models can provide relevant and sensible patient comparisons to assist a clinician with treatment decisions. As immersive technology is actively used around the medical world, there is a rising demand for an efficient environment that can effectively display genom...
The rapid evolution of technology in connected automated and autonomous vehicles offers immense potential for revolutionizing future intelligent traffic control and management. This potential is exemplified by the diverse range of control paradigms, ranging from self-routing to centralized control. However, the selection among these paradigms is be...
Cancer is a disease characterised by changes in combinations of genes within affected tumour cells. The deep understanding of genetic activity afforded to cancer specialists through complex genomics data analytics has advanced the clinical management of cancer by using deep machine learning algorithms and visualisation. However, most of the existin...
The advancement of technologies for autonomous vehicles (AVs) provides great potential for intelligent traffic control and management in the future. The deployment of Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) and Vehicle-to-Everything (V2X) communications enable traffic control on road segments, intersections or regional road networ...
Background
Visualising patient genomic data in a cohort with embedding data analytics models can provide relevant and sensible patient comparisons to assist a clinician with treatment decisions. As immersive technology is actively used around the medical world, there is a rising demand for an efficient environment that can effectively display genom...
Uniform Manifold Approximation and Projection (UMAP) is a new and effective non-linear dimensionality reduction (DR) method recently applied in biomedical informatics analysis. UMAP’s data transformation process is complicated and lacks transparency. Principal component analysis (PCA) is a conventional and essential DR method for analysing single-c...
This paper proposes a multi-agent based method to describe traffic control optimization for autonomous vehicle assignment problems on road networks. We first present a formal model for abstract road networks. We then extend the road network model into a game-theoretical model based on population games to describe the behavior of autonomous vehicles...
The significant advancement of inexpensive and portable virtual reality (VR) and augmented reality devices has re-energised the research in the immersive analytics field. The immersive environment is different from a traditional 2D display used to analyse 3D data as it provides a unified environment that supports immersion in a 3D scene, gestural i...
Immersive technologies, including virtual reality (VR), augmented reality (AR), and mixed reality (MR), can connect people using enhanced data visualizations to better involve stakeholders as integral members of the process. Immersive technologies have started to change the research on multidimensional genomic data analysis for disease diagnostics...
Scatterplot visualization techniques are known as a useful method that shows the correlations of variables on the axes, as well as revealing patterns or abnormalities in the multidimensional data sets. They are often used in the early stage of the exploratory analysis. Scatterplot techniques have the drawback that they are not quite effective in sh...
This paper discusses the approach that utilises Unity3D to provide a smooth and interactive visual presentation of information, cross platforms, and screen sizes and resolutions. By using the capability of the game engines in terms of processing efficiency, fast model rendering and smooth interaction with the objects. Using a dataset from Westmead...
Scatterplots and scatterplot matrix methods have been popularly used for showing statistical graphics and for exposing patterns in multivariate data. A recent technique, called Linkable Scatterplots, provides an interesting idea for interactive visual exploration which provides a set of necessary plot panels on demand together with interaction, lin...
Massive amounts of health data have been created together with the advent of computer technologies and next generation sequencing technologies. Analytical techniques can significantly aid in the processing, integration and interpretation of the complex data. Visual analytics field has been rapidly evolving together with the advancement in automated...
Mediation is a process in which two parties agree to resolve their dispute by negotiating over alternative solutions presented by a mediator. In order to construct such solutions, the mediator brings more information and knowledge, and, if possible, resources to the negotiation table. In order to do so, the mediator faces the challenge of determini...
With the internet taking over many aspects of our lives including the way commercial practices are handled, many business owners are taking what has been posted about them in the forms of online reviews very seriously. While most e-business data visualisation tools focus on website analytics and customer behaviors to determine what customers want a...
Genomics data are very complex and could contain crucial information about a disease or how a treatment method may perform well on one but not on another. Understanding such genomic data would enable better insight into the correlation between genes and diseases, which could facilitate personalised treatments for the patients. Although visualisatio...
Smart home researches have emerged in recent years as a popular field of study in pervasive computing to suggest a solution that can be beneficial for impaired individuals and elderly on their daily life basis. Location tracking accuracy is a major research challenge in smart homes that needs much further investigation. This paper presents a review...
This article presents a new interactive visualization for exploring large hierarchical structures by providing visual cues on a node link tree visualization. Our technique provides topological previews of hidden substructures with three types of visual cues including simple cues, tree cues and treemap cues. We demonstrate the visual cues on Degree-...
In this paper we introduce a negotiation mediator in a multiagent context. When negotiation fails, a mediator can interact with the parties, find out about their goals, ontologies, and arguments for and against negotiation outcome, and suggest solutions based on previous experience. An algorithmic schema to be instantiated with particular argumenta...
Elderly inhabitants have a strong influence to healthcare facilities globally in the last few years as a result of the high demand on the healthcare services and the gap between the services provided by caregivers and the increasing number of older people. Radio Frequency Identification (RFID) technologies have been increasingly adopted in smart ho...
The Internet of Things (IoT) enables numerous business opportunities in fields as diverse as e-health, smart cities, smart homes, among many others. The IoT incorporates multiple long-range, short-range, and personal area wireless networks and technologies into the designs of IoT applications. Localisation in indoor positioning systems plays an imp...
In recent years, Smart Homes have become a solution to benefit impaired individuals and elderly in their daily life settings. In healthcare applications, pervasive technologies have enabled the practicality of personal monitoring using Indoor positioning technologies. Radio-Frequency Identification (RFID) is a promising technology, which is useful...
This paper presents a framework to mine and identify the areas of life and the way they are perceived, understood cognitively, and effectively using visualisation and machine learning. We provide an overview of the network of users including their activity and connections as well as zoom and details on demand of each individual areas of life. This...
3D Virtual Reality simulations of ancient societies represent a powerful mechanism for combining the knowledge of many researchers (e.g. archaeologists, historians and anthropologists) in a way that it becomes accessible to general audiences, as well as suitable for cross-disciplinary academic collaboration. Through such simulations people with lit...
In cancer biology, genomics represents a big data problem that needs accurate visual data processing and analytics. The human genome is very complex with thousands of genes that contain the information about the individual patients and the biological mechanisms of their disease. Therefore, when building a framework for personalised treatment, the c...
Clarity, simplicity and visual adjustability to the preference of the analyst are key aspects of the visualization techniques required by visual analytics in broad sense. Scatterplots and scatterplot matrices are commonly used for visually analyzing multidimensional multivariate data. This paper presents a new approach for deep visual exploration o...
In the virtual dreaming simulation [2] we show everyday life of Aboriginal people from the Darug tribe, who used to live in the Parramatta basin (New South Wales, Australia) in year 1770 A.D. before the arrival of the first fleet [3] and the establishment of the first European settlement in Australia. Each member of the tribe is represented by a vi...
In this paper we investigate the concept of believability and make an attempt to isolate individual characteristics (features) that contribute to making virtual characters believable. As the result of this investigation we have produced a formalisation of believability and based on this formalisation built a computational framework focused on simul...
In recent years, Smart Homes have become a solution to benefit impaired individuals and elderly in their daily life settings. In healthcare applications, pervasive technologies have enabled the practicality of personal monitoring using Indoor positioning technologies. Radio-Frequency Identification (RFID) is a promising technology, which is useful...
Most existing treemaps achieve the space utilization of a single geometrical area, mostly rectangle. Limiting visualization to rectangles could block the human capability on graph recognition, including orientation, shape and differentiation etc. To relax rectangular constraint, we propose a flexible enclosure approach with three algorithms. It par...
Multi-label classifiers allow us to predict the state of a set of responses using a single model. A multi-label model is able to make use of the correlation between the labels to potentially increase the accuracy of its prediction. Critical applications of multi-label classifiers (such as medical diagnoses) require that the system’s confidence in p...
This paper considers collaborative structures in academic networks. Network analysis reveals surprising connections not reflected in institutions’ formal structures. Semantic analysis of stories of collaboration shows collaboration as critical to research and production of cutting-edge knowledge. Discussion of the value of multiple methods in resea...
A large number of tracking and gesture recognition algorithms and technologies have been developed in the field of human-computer interactions thanks to the introduction of cameras with depth sensors such as Microsoft's Kinect. Most of the techniques rely on skeleton tracking which is more suitable for distant and full body interaction. This paper...
A recent study supports the claim that Aboriginal Australians are the oldest continuous living culture on the planet, their being directly descended from the first people to leave Africa up to 75,000 years ago. Aborigines developed a rich culture involving custom, lore and value systems based on the sustainability of their spiritual connection, bel...
Interactive visual analysis can support displaying complex multidimensional data. We developed a novel system, which can incorporate domain knowledge and visual guidelines, to present complex logistical data. This paper presents the details of the development process of that system. Diagrammatic visualization approach was adopted for presenting mul...
Believability is an important characteristic of intelligent virtual agents, however, very few attempts have been made to define and formalise it. This paper provides a formal analysis of believability, focused on diverse aspects of believability of the agents and the virtual environment they populate, approaching the problem from the perspective of...
Visualizing a real-time social network, such as from Twitter, can potentially discover the patterns and insight of actors’ interconnectedness and interactions according to the links between actors and activities. This paper presents a novel system for an intelligent and interactive visualization of social networks with hashtags. We provide a flexib...
Mediation is a process, in which both parties agree to resolve their dispute
by negotiating over alternative solutions presented by a mediator. In order to
construct such solutions, mediation brings more information and knowledge, and,
if possible, resources to the negotiation table. The contribution of this paper
is the automated mediation machine...
When conducting archaeological excavations of an-cient cities, 3D reconstruction has become an important mech-anism of documenting the findings and showing the results to general public in an accessible way. Most such reconstructions, however, mainly focus on visualising buildings and artefacts, while rarely simulating the actual people that popula...
Virtual reality reconstructions of ancient historical sites have become a valuable technique for popularising science and visualising expert knowledge to general audiences. Most such reconstructions only re-create buildings and artefacts and place them in the context of the virtual environment, but what is often missing in such simulations is the a...
It is becoming increasingly difficult to stay aware of the state-of-the-art in any research field due to the exponential increase in the number of academic publications. This problem effects authors and reviewers of submissions to academic journals and conferences, who must be able to identify which portions of an article are novel and which are no...
This paper extends a previous work on node link tree visualization and interaction by providing visual clues on hidden structures. We adopt the effectiveness of DOI Tree, a multi-focal tree layout algorithm, for exploring large hierarchical structures. The advantages of visualization are its most familiar mapping for users, its capability on provid...
A visual analysis approach and the developed supporting technology provide a comprehensive solution for analyzing large and complex integrated genomic and biomedical data. This paper presents a methodology that is implemented as an interactive visual analysis technology for extracting knowledge from complex genetic and clinical data and then visual...
Measurement of graph centrality provides us with an indication of the importance or popularity of each vertex in a graph. When dealing with graphs that are not centrally controlled (such as the Web, social networks and academic citation graphs), centrality measure must 1) correlate with vertex importance/popularity, 2) scale well in terms of comput...
3D virtual reality, including the current generation of multi-user virtual worlds, has had a long history of use in education and training, and it experienced a surge of renewed interest with the advent of Second Life in 2003. What followed shortly after were several years marked by considerable hype around the use of virtual worlds for teaching, l...
3D virtual reality, including the current generation of multi-user virtual worlds, has had a long history of use in education and training, and it experienced a surge of renewed interest with the advent of Second Life in 2003. What followed shortly after were several years marked by considerable hype around the use of virtual worlds for teaching, l...
While prior works on enclosure approach, guarantees the space utilization of a single geometrical area, mostly rectangle, this paper proposes a flexible enclosure tree layout method for partitioning various polygonal shapes that break through the limitation of rectangular constraint. Similar to Treemap techniques, it uses enclosure to divide displa...
Going beyond performing simple analyses, researchers involved in the highly dynamic field of computational intelligent data analysis design algorithms that solve increasingly complex data problems in changing environments, including economic, environmental, and social data. Computational Intelligent Data Analysis for Sustainable Development present...
Simulating large crowds of virtual agents has become an im-
portant problem in virtual reality applications, video games,
cinematography and training simulators. In this paper, we
show how to achieve a high degree of appearance variation
among individual 3D avatars in generated crowds through
the use of genetic algorithms, while also manifesting un...
This paper presents a novel visual analytics technique that enables effective analysis of large and complex genomic and biomedical data. A comprehensive prototype has been developed to support the analysis process The system consists of multiple components, including an automated gene selection, a three-dimensional visualization for analyzing patie...
Prior works on treemaps have mainly focused on developing the new layouts. The existing treemaps generated from various algorithms require careful examination on design parameter. However, current research does not provide usability studies of treemap guidelines on effectiveness of design parameters. Hence, selecting the most effective parameter fo...
This paper describes a new three-dimensional interactive visualization supporting large scale medical data analysis. We provide a simple and effective view so that the biomedical information can be easily perceived. Our visualization also embeds a novel mechanism to prevent disorientation by maintaining the orientation of objects and labels during...
In this paper we show how 3D Virtual Worlds can be utilised for teaching ancient history. Our goal is to build an accurate replica of one of humanity’s first cities in a 3D Virtual World and provide history students with facilities to explore the virtual city and learn about its past in the simulated 3D environment. Unlike the majority of similar h...
Co-creative processes have spawned successes such as Wikipedia. They are also used to draw innovative ideas from consumers to producers, and from voters to government. This paper describes the initial stages of a collaboration between two Sydney-based universities to build a customisable co-creative process management system. The system has embedde...
Space-filling visualization techniques have proved their capability in visualizing large hierarchical structured data. However, most existing techniques restrict their partitioning process in vertical and horizontal direction only, which cause problem with identifying hierarchical structures. This paper presents a new space-filling method named Ang...
Virtual worlds (VWs) continue to be used extensively in Australia and New Zealand higher education institutions although the tendency towards making unrealistic claims of efficacy and popularity appears to be over. Some educators at higher education institutions continue to use VWs in the same way as they have done in the past; others are exploring...
In this paper we present the Believable Negotiator - the formalism behind a Web business negotiation technology that treats relationships as a commodity. It supports relationship building, maintaining, evolving, and passing to other agents, and utilises such relationships in agent interaction. The Believable Negotiator also takes in account the "re...
A joint university / industry collaboration has designed a system for conserving power in LTE (Long Term Evolution) wireless networks for mobile devices such as phones. The solution may be applied to any wireless technology in which all stations are wired to a backbone (e.g. it may not be applied to an 802.11 mash). This paper describes the solutio...
Research on embodied conversational agents' reason-ing and actions has mostly ignored the external en-vironment. This papers argues that believability of such agents is tightly connected with their ability to relate to the environment during a conversation. This ability, defined as awareness believability, is for-malised in terms of three component...
Over the past decade, teaching and learning in virtual worlds has been at the forefront of many higher education institutions around the world. The DEHub Virtual Worlds Working Group (VWWG) consisting of Australian and New Zealand higher education academics was formed in 2009. These educators are investigating the role that virtual worlds play in t...
This paper presents a novel visual analytics method that incorporates knowledge from the analysis domain so that it can extract knowledge from complex genetic and clinical data and then visualizing them in a meaningful and interpretable way. The domain experts that are both contributors to formulating the requirements for the design of the system a...
Mediation is an important method in dispute resolution. We implement a case based reasoning approach to mediation integrating analogical and commonsense reasoning components that allow an artificial mediation agent to satisfy requirements expected from a human mediator, in particular: utilizing experience with cases in different domains; and struct...
An important security aspect of Virtual Worlds (in particular Virtual Worlds oriented towards commercial activities) is controlling participants’ adherence to the social norms (rules of behavior) and making them follow the acceptable interaction patterns. Rules of behavior in the physical world are usually enforced through a post factum punishment,...
With an astonishing amount of genomic data generated for processing in medical field, it is essential to provide an effective methodology for understanding, reasoning and supporting decision making of large information spaces. This paper presents an interactive interface that provides a mechanism to analyse large scale biological and clinical data....
The Alps of southeastern France, better known as the Valley of Marvels, hide an impressive collection of engravings, mostly visible on the rocks around Mount Bego, which are irreplaceable witnesses of what life of the people who created them looked like. This calls for immediate action on promoting the awareness of this cultural treasure, which is...
We investigate an innovative design of information and communications technology for
preservation and reenactment of cultures. Through an extensive literature review we identified
the key components associated with a culture, among which are the environment, objects,
knowledge, and institutions. Based on the acquired knowledge we developed a formal...
Relationships are fundamental to all but the most impersonal forms of interaction in business. Human agents who are unsure
of themselves seek honourable trading relationships. The establishment and growth of interpersonal relationships is a result
of reciprocal exchange of information. This paper addresses the problem of use of information for deve...