Effective Temporal Graph Layout: A Comparative Study of Animation versus Static Display Methods

2011 ◽  
Vol 10 (1) ◽  
pp. 47-64 ◽  
Author(s):  
Michael Farrugia ◽  
Aaron Quigley

Graph drawing algorithms have classically addressed the layout of static graphs. However, the need to draw evolving or dynamic graphs has brought into question many of the assumptions, conventions and layout methods designed to date. For example, social scientists studying evolving social networks have created a demand for visual representations of graphs changing over time. Two common approaches to represent temporal information in graphs include animation of the network and use of static snapshots of the network at different points in time. Here, we report on two experiments, one in a laboratory environment and another using an asynchronous remote web-based platform, Mechanical Turk, to compare the efficiency of animated displays versus static displays. Four tasks are studied with each visual representation, where two characterise overview level information presentation, and two characterise micro level analytical tasks. For the tasks studied in these experiments and within the limits of the experimental system, the results of this study indicate that static representations are generally more effective particularly in terms of time performance, when compared to fully animated movie representations of dynamic networks.

2021 ◽  
pp. 147387162110560
Author(s):  
Evan Ezell ◽  
Seung-Hwan Lim ◽  
David Anderson ◽  
Robert Stewart

We present Community Fabric, a novel visualization technique for simultaneously visualizing communities and structure within dynamic networks. In dynamic networks, the structure of the network is continuously evolving throughout time and these underlying topological shifts tend to lead to communal changes. Community Fabric helps the viewer more easily interpret and understand the interplay of structural change and community evolution in dynamic graphs. To achieve this, we take a new approach, hybridizing two popular network and community visualizations. Community Fabric combines the likes of the Biofabric static network visualization method with traditional community alluvial flow diagrams to visualize communities in a dynamic network while also displaying the underlying network structure. Our approach improves upon existing state-of-the-art techniques in several key areas. We describe the methodologies of Community Fabric, implement the visualization using modern web-based tools, and apply our approach to three example data sets.


2014 ◽  
Vol 05 (01) ◽  
pp. 127-152 ◽  
Author(s):  
E. Sundvall ◽  
K.R. Gøeg ◽  
A.R. Højen

SummaryInconsistent use of SNOMED CT concepts may reduce comparability of information in health information systems. Terminology implementation should be approached by common strategies for navigating and selecting proper concepts. This study aims to explore ways of illustrating common pathways and ancestors of particular sets of concepts, to support consistent use of SNOMED CT and also assess potential applications for such visualizations.The open source prototype presented is an interactive web-based re-implementation of the terminology visualization tool TermViz that provides an overview of concepts and their hierarchical relations. It provides terminological features such as interactively rearranging graphs, fetching more concept nodes, highlighting least common parents and shared pathways in merged graphs etc.Four teams of three to four people used the prototype to complete a terminology mapping task and then, in focus group interviews, discussed the user experience and potential future tool usage. Potential purposes discussed included SNOMED CT search and training, consistent selection of concepts and content management.The evaluation indicated that the tool may be useful in many contexts especially if integrated with existing systems, and that the graph layout needs further tuning and development.Citation: Højen AR, Sundvall E, Gøeg KR. Methods and applications for visualization of SNOMED CT concept sets. Appl Clin Inf 2014; 5: 127–152http://dx.doi.org/10.4338/ACI-2013-09-RA-0071


Author(s):  
Helen C. Purchase

This chapter describes a long-term project that investigates the validity of the design principles — not from the perspective of computational efficiency, but from the perspective of human comprehension — upon which many automatic graph layout algorithms are based. It describes a framework for experimentation in this area, the overall methodology used throughout, as well as the details of the experiments themselves. It shows the development of the empirical ideas and methods as the project matured and provides reflections on each experiment, demonstrating the difficulty of initiating a new experimental research area. The chapter suggests how the current results should best be interpreted, as well as ideas for future work in this area.


2020 ◽  
pp. 3-21
Author(s):  
Bart J. Wilson

The central claim of the book is that property is a universal and uniquely human custom. Contra cultural relativists, every human society has property tools, utensils, and ornaments. Contra biologists, only Homo sapiens has property in things other than food, mates, and territories. Contra philosophers and legal scholars, the bedrock of property is custom, not rights. Contra social scientists and ordinary people, property is indeed a custom and not something that must be instituted by government. Property operates at the three levels. At the micro-level core of property is an organism that perceives the physical world through its body. The meso-level of property is the community within which the organism resides. At the macro-level of property are the institutions that unite strangers of different communities through the modern democratic concept of rights. Whereas the custom of property is ancient, moral, and universal to all people, property rights are modern, amoral, and majoritarian.


2011 ◽  
pp. 118-146 ◽  
Author(s):  
Syed Sibte Raza Abidi

This chapter introduces intelligent information personalization as an approach to personalize the webbased information retrieval experiences based on an individual’s interests, needs and goals. We present intelligent techniques to dynamically compose new personalized information by adapting existing web-based information in line with a dynamic user-model, whilst simultaneously addressing linguistic, factual and functional requirements. This chapter will highlight the different facets, tasks and issues concerning intelligent information personalization to guide researchers in designing intelligent information personalization applications. The chapter presents intelligent methods that address information personalization at the content level as opposed to the traditional approaches that focus on interface level information personalization. To assist researchers in designing intelligent information personalization applications we present our information personalization framework, named AdWISE (Adaptive Webmediated Information and Services Environment), to demonstrate how to systematically integrate various intelligent methods to achieve information personalization. We will conclude with a commentary on the future outlook for intelligent information personalization.


Author(s):  
El-Sayed S. Aziz ◽  
Constantin Chassapis ◽  
Sven K. Esche

Student laboratories have always played a key role in the engineering education at Stevens Institute of Technology (SIT). Recently, SIT has designed and implemented several innovative Web-based tools for engineering laboratory education and evaluated their learning effectiveness in pilot deployments in various engineering courses. These Web-based tools include both remotely operated experiments based on actual experimental devices as well as virtual experiments representing software simulations. These tools facilitate the development of learning environments, which - possibly in conjunction with traditional hands-on experiments - allow the expansion of the scope of the students' laboratory experience well beyond the confines of what would be feasible in the context of traditional laboratories. This becomes possible because of the scalability of resources that are shared through the Web and the flexibility of software simulations in varying the characteristic parameters of the experimental system under investigation. Further educational benefits of the proposed laboratory approach are that asynchronous learning modes are supported and discovery-based self-learning, of the students is promoted. This paper will present the details of the approach taken at SIT in integrating these Web-based tools into a comprehensive student laboratory experience. As an example for the implementation of such Web-based experiments, an Industrial-Emulator/Servo-Trainer System will be described, which is used at SIT in a junior-level course on mechanisms and machine dynamics.


2019 ◽  
Vol 6 (2) ◽  
pp. 190
Author(s):  
Irtifa Alam Nabila

Erosion and accretion are continuously changing the shape, size and configuration of Sandwip Island of Bangladesh. Plot level database are very significant in order to document these changes from micro levels. For this purpose, an attempt has been made to develop plot level database about land accretion of the Island since 1913 through overlapping Mauza maps using GIS (Geographic Information System) data. Here a case study named Thak Kuchiamora mauza, experiencing alluvion located in the eastern side of the Sandwip Island has been presented from micro level. Both primary and secondary data have been used for this study. CS (Cadastral Survey) and RS (Revisional Settlement) mauza maps available from DLRS (Directorate of land records and Surveys) office has been collected and overlaid on satellite images (2016) so that the accretion context and circumstances can be detected. Plot level information has been extracted from collected mauza maps and integrating with present land cover features changing scenario has been analysed. During cadastral survey 172 plots have been recorded and in the Revisional settlement operation it increased into 502 plots due to land fragmentation. From 1970 to 2000 period the area accreted about 220 m from southwest to northeast direction. Analyzing accreted database over different period it has been concluded that from Revisional settlement operation (1970) to 2016 it has been recorded that the mauza has increased about 1185 m from west to east. The newly formed landmass of the area hasn’t stable enough for permanent land use yet.


2010 ◽  
Vol 5 (4) ◽  
pp. 141-151
Author(s):  
Taiyo Maeda ◽  
Tadahiko Murata ◽  
Daichi Kotaka ◽  
Shigeru Matsumoto ◽  
Yaug Cao

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