This paper addresses some fundamental and practical issues that should be considered when pursuing evaluation studies in Information Visualization. The main focus is on quantitative experimental research but the general information applies to all kinds of studies. The purpose is to increase awareness of what constitutes a sound scientific approach to evaluation and to point out common pitfalls and mistakes during the phases of such study. These phases cover how to plan, design, conduct and analyse the outcome of an evaluation and finally how to report in a way that enhances readability, provides details relevant to the outcome and that allows replication. The paper could be used as a guide when conducting evaluation and it could also be helpful when reviewing publications since the same rules apply.
{"title":"A Guide to Scientific Evaluation in Information Visualization","authors":"C. Forsell","doi":"10.1109/IV.2010.33","DOIUrl":"https://doi.org/10.1109/IV.2010.33","url":null,"abstract":"This paper addresses some fundamental and practical issues that should be considered when pursuing evaluation studies in Information Visualization. The main focus is on quantitative experimental research but the general information applies to all kinds of studies. The purpose is to increase awareness of what constitutes a sound scientific approach to evaluation and to point out common pitfalls and mistakes during the phases of such study. These phases cover how to plan, design, conduct and analyse the outcome of an evaluation and finally how to report in a way that enhances readability, provides details relevant to the outcome and that allows replication. The paper could be used as a guide when conducting evaluation and it could also be helpful when reviewing publications since the same rules apply.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125325658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Andrienko, N. Andrienko, Martin Mladenov, M. Mock, Christian Pölitz
An important task in exploration of data about phenomena and processes that develop over time is detection of significant changes that happened to the studied phenomenon. Our research is focused on supporting detection of significant changes, called events, in multiple time series of numeric values. We developed a suite of visual analytics techniques that combines interactive visualizations on time-aware displays and maps with statistical event detection methods implemented in R. We demonstrate the utility of our approach using two large data sets.
{"title":"Extracting Events from Spatial Time Series","authors":"G. Andrienko, N. Andrienko, Martin Mladenov, M. Mock, Christian Pölitz","doi":"10.1109/IV.2010.17","DOIUrl":"https://doi.org/10.1109/IV.2010.17","url":null,"abstract":"An important task in exploration of data about phenomena and processes that develop over time is detection of significant changes that happened to the studied phenomenon. Our research is focused on supporting detection of significant changes, called events, in multiple time series of numeric values. We developed a suite of visual analytics techniques that combines interactive visualizations on time-aware displays and maps with statistical event detection methods implemented in R. We demonstrate the utility of our approach using two large data sets.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125222408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the improved uptake of Building Information Modelling (BIM) new issues are emerging. Prime in these tasks is how it is presented to the various stakeholders, in tailor made views to reflect their demands and requirements. In this fragmented sector strong in the concept of phased handovers new methods of feedback loops need to be developed, and other stakeholders outside the procurement process need to be included to progress and manage the practice. Within this scenario is the role of the facility manager, who currently operates separately to the procurement stakeholders. Bridges need to be built to bring them closer together especially in light of life cycle costing and sustainability if the buildings operations and maintenance issues are to be addressed in the design phase. The model's ability to host work phases or stages opens up a method to co-inhabit the model to accommodate both sets of stakeholders. This filtering of the model has both tremendously positive aspects but conversely larger issues of ownership and custodianship have not to date been satisfactorily resolved. There is a major role for proper management here, which has not been appropriately identified. Initially there was a clarion call to architects to adopt this role and a few years ago this seemed to return the lead role to this noble profession. But patently they are neither prepared nor keen to take on this role. Constructing architects however do seem to want this discipline which can raise their profile and possibly lead to professional recognition and prestige.
{"title":"The Management of Sharing, Integrating, Tracking, and Maintaining Data-Sets, is a New and Rather Complex Task","authors":"J. Harty, R. Laing","doi":"10.1109/IV.2010.102","DOIUrl":"https://doi.org/10.1109/IV.2010.102","url":null,"abstract":"With the improved uptake of Building Information Modelling (BIM) new issues are emerging. Prime in these tasks is how it is presented to the various stakeholders, in tailor made views to reflect their demands and requirements. In this fragmented sector strong in the concept of phased handovers new methods of feedback loops need to be developed, and other stakeholders outside the procurement process need to be included to progress and manage the practice. Within this scenario is the role of the facility manager, who currently operates separately to the procurement stakeholders. Bridges need to be built to bring them closer together especially in light of life cycle costing and sustainability if the buildings operations and maintenance issues are to be addressed in the design phase. The model's ability to host work phases or stages opens up a method to co-inhabit the model to accommodate both sets of stakeholders. This filtering of the model has both tremendously positive aspects but conversely larger issues of ownership and custodianship have not to date been satisfactorily resolved. There is a major role for proper management here, which has not been appropriately identified. Initially there was a clarion call to architects to adopt this role and a few years ago this seemed to return the lead role to this noble profession. But patently they are neither prepared nor keen to take on this role. Constructing architects however do seem to want this discipline which can raise their profile and possibly lead to professional recognition and prestige.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122723589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To meet the growing demand of communicating climate science and policy research, the interdisciplinary field of climate visualization has increasingly extended its traditional use of 2D representations and techniques from the field of scientific visualization to include information visualization for the creation of highly interactive tools for both spatial and abstract data. This paper provides an initial discussion on the need and design of evaluations for climate visualization. We report on previous experiences and identify how evaluation methods commonly used in information visualization can be used in climate visualization to increase our understanding of visualization techniques and tools.
{"title":"Evaluating Climate Visualization: An Information Visualization Approach","authors":"J. Johansson, T. Neset, B. Linnér","doi":"10.1109/IV.2010.32","DOIUrl":"https://doi.org/10.1109/IV.2010.32","url":null,"abstract":"To meet the growing demand of communicating climate science and policy research, the interdisciplinary field of climate visualization has increasingly extended its traditional use of 2D representations and techniques from the field of scientific visualization to include information visualization for the creation of highly interactive tools for both spatial and abstract data. This paper provides an initial discussion on the need and design of evaluations for climate visualization. We report on previous experiences and identify how evaluation methods commonly used in information visualization can be used in climate visualization to increase our understanding of visualization techniques and tools.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130382743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of the current paper is to report on the conceptualisation of visual methods and techniques that were adapted for the monitoring of community participation on Thinkster e-learning platform. This platform supported the research activities of Masters students in Multimedia Communication program at University of Aveiro (2008/2009 academic year). This research work implies two components, which are dependent. One of the components is related to the development of a Web based functional prototype in order to allow teachers and system administrators the visualisation and analysis of the users’ interactions on Thinkster’s communication and information system. The other component of this work is focused on the prototype evaluation with an analytical method that revealed some of the target users’ expectations, opinions and their satisfaction level related to the application interface.
{"title":"Visualisation of Web Based e-Learning Activity","authors":"A. Oliveira, Ó. Mealha, Carlos Santos","doi":"10.1109/IV.2010.41","DOIUrl":"https://doi.org/10.1109/IV.2010.41","url":null,"abstract":"The aim of the current paper is to report on the conceptualisation of visual methods and techniques that were adapted for the monitoring of community participation on Thinkster e-learning platform. This platform supported the research activities of Masters students in Multimedia Communication program at University of Aveiro (2008/2009 academic year). This research work implies two components, which are dependent. One of the components is related to the development of a Web based functional prototype in order to allow teachers and system administrators the visualisation and analysis of the users’ interactions on Thinkster’s communication and information system. The other component of this work is focused on the prototype evaluation with an analytical method that revealed some of the target users’ expectations, opinions and their satisfaction level related to the application interface.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122197658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recent research indicates that Virtual Reality (VR) as a communication tool to convey design intent and construction methodologies in the built environment sector has been utilized to varied degrees. Currently, the effectiveness of VR has been demonstrated from conception to the final stages of projects in many fields, yet its potential within the Built Environment has still to realised, despite a variety of successful demonstrations. There is concern that the current utilisation of VR compromises its full potential, unsurprisingly, as environmental representations focus predominantly on the visual modality, regardless of the multi sensory nature of the spatial experience. In addition, there is a distinct paucity of research exploring the complex interaction of environmental design and the user, such as the role of attention or conceptual interpretation. This paper aims to identify the issues concerning the utilization of VR models to aid communication for the Built Environment with specific reference to human perception issues.
{"title":"Human Perception, Virtual Reality and the Built Environment","authors":"Angie Johnson, Emine M. Thompson, K. Coventry","doi":"10.1109/IV.2010.88","DOIUrl":"https://doi.org/10.1109/IV.2010.88","url":null,"abstract":"Recent research indicates that Virtual Reality (VR) as a communication tool to convey design intent and construction methodologies in the built environment sector has been utilized to varied degrees. Currently, the effectiveness of VR has been demonstrated from conception to the final stages of projects in many fields, yet its potential within the Built Environment has still to realised, despite a variety of successful demonstrations. There is concern that the current utilisation of VR compromises its full potential, unsurprisingly, as environmental representations focus predominantly on the visual modality, regardless of the multi sensory nature of the spatial experience. In addition, there is a distinct paucity of research exploring the complex interaction of environmental design and the user, such as the role of attention or conceptual interpretation. This paper aims to identify the issues concerning the utilization of VR models to aid communication for the Built Environment with specific reference to human perception issues.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125232403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Masud, F. Valsecchi, P. Ciuccarelli, Donato Ricci, G. Caviglia
In this paper we suggest a different approach that considers visualizations in the wider domain of communication and defines a model capable of taking into account the context in which visualizations act as communication tools. In this perspective we consider visualizations as transformation processes within the Data-Information-Knowledge (DIK) continuum. In the paper we discuss the continuum, and apply the transformation process model to the main disciplines of visualization. Visualizations represent powerful cognitive tools that surround our everyday life [1]. By doing this we are able to think about visualization from a multidisciplinary perspective, exploring the role of visualizations in design practice, as artifacts that are used in facing problems of various degrees of complexity and nature. The contribution of the model is mainly addressed to orientate and nurture the reflective practice and to formalize the strategic more than the technical role of visualizations in the design discipline.
{"title":"From Data to Knowledge - Visualizations as Transformation Processes within the Data-Information-Knowledge Continuum","authors":"L. Masud, F. Valsecchi, P. Ciuccarelli, Donato Ricci, G. Caviglia","doi":"10.1109/IV.2010.68","DOIUrl":"https://doi.org/10.1109/IV.2010.68","url":null,"abstract":"In this paper we suggest a different approach that considers visualizations in the wider domain of communication and defines a model capable of taking into account the context in which visualizations act as communication tools. In this perspective we consider visualizations as transformation processes within the Data-Information-Knowledge (DIK) continuum. In the paper we discuss the continuum, and apply the transformation process model to the main disciplines of visualization. Visualizations represent powerful cognitive tools that surround our everyday life [1]. By doing this we are able to think about visualization from a multidisciplinary perspective, exploring the role of visualizations in design practice, as artifacts that are used in facing problems of various degrees of complexity and nature. The contribution of the model is mainly addressed to orientate and nurture the reflective practice and to formalize the strategic more than the technical role of visualizations in the design discipline.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133646287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper discusses the problem of constructing positive cubic spline interpolation. To obtain smooth curve for positive data, piecewise rational cubic function has been used. In the description of rational interpolant, two families of parameters have been constrained to preserve positive shape of the data, the rational spline scheme has a unique representation. In addition, to preserve the shape of positive data sets, the degree of smoothness attained is C^2.
{"title":"Visualization of Positive Data by Rational Cubic Spline Interpolant","authors":"M. Sarfraz, M. Hussain, T. S. Shaikh","doi":"10.1109/IV.2010.82","DOIUrl":"https://doi.org/10.1109/IV.2010.82","url":null,"abstract":"This paper discusses the problem of constructing positive cubic spline interpolation. To obtain smooth curve for positive data, piecewise rational cubic function has been used. In the description of rational interpolant, two families of parameters have been constrained to preserve positive shape of the data, the rational spline scheme has a unique representation. In addition, to preserve the shape of positive data sets, the degree of smoothness attained is C^2.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"29 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133163157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The ACGT Oncosimulator is an integrated Grid-based system, under development within a 25-partner European-Japanese project, for patient-specific simulation of the response of a tumour and surrounding tissue to various forms of therapy. The validation of the simulation code is an activity requiring extensive human-driven visual investigation of the influence of each of the dozens of parameters to the code, and comparison of the simulation results against the known outcomes of past patient treatments. This activity therefore calls for a visualisation environment that supports users in working with an extremely large potential result space, and in rapidly setting up visualisations that highlight the differences between chosen subsets of available results. We describe the innovative features of the OncoRecipeSheet, an environment designed to meet these requirements.
{"title":"Preparing, Exploring and Comparing Cancer Simulation Results within a Large Parameter Space","authors":"A. Lunzer, R. Belleman, P. Melis, G. Stamatakos","doi":"10.1109/IV.2010.46","DOIUrl":"https://doi.org/10.1109/IV.2010.46","url":null,"abstract":"The ACGT Oncosimulator is an integrated Grid-based system, under development within a 25-partner European-Japanese project, for patient-specific simulation of the response of a tumour and surrounding tissue to various forms of therapy. The validation of the simulation code is an activity requiring extensive human-driven visual investigation of the influence of each of the dozens of parameters to the code, and comparison of the simulation results against the known outcomes of past patient treatments. This activity therefore calls for a visualisation environment that supports users in working with an extremely large potential result space, and in rapidly setting up visualisations that highlight the differences between chosen subsets of available results. We describe the innovative features of the OncoRecipeSheet, an environment designed to meet these requirements.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123912796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Networks are widely used in modeling relational data often comprised of thousands of nodes and edges. This kind of data alone implies a challenge for its visualization as it is hard to avoid clutter of network elements if using traditional node-link diagrams. Moreover, real-life network data sets usually represent objects with a large number of additional attributes that need to be visualized, such as in software engineering, social network analysis, or biochemistry. In this paper, we present a novel approach, called Network Lens, to visualize such attributes in context of the underlying network. Our implementation of the Network Lens is an interactive tool that extends the idea of so-called magic lenses in such a way that users can interactively build and combine various lenses by specifying different attributes and selecting suitable visual representations.
{"title":"The Network Lens: Interactive Exploration of Multivariate Networks Using Visual Filtering","authors":"Ilir Jusufi, Yang Dingjie, A. Kerren","doi":"10.1109/IV.2010.15","DOIUrl":"https://doi.org/10.1109/IV.2010.15","url":null,"abstract":"Networks are widely used in modeling relational data often comprised of thousands of nodes and edges. This kind of data alone implies a challenge for its visualization as it is hard to avoid clutter of network elements if using traditional node-link diagrams. Moreover, real-life network data sets usually represent objects with a large number of additional attributes that need to be visualized, such as in software engineering, social network analysis, or biochemistry. In this paper, we present a novel approach, called Network Lens, to visualize such attributes in context of the underlying network. Our implementation of the Network Lens is an interactive tool that extends the idea of so-called magic lenses in such a way that users can interactively build and combine various lenses by specifying different attributes and selecting suitable visual representations.","PeriodicalId":328464,"journal":{"name":"2010 14th International Conference Information Visualisation","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127990719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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