Latest in cs.hc

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ChordLink: A New Hybrid Visualization ModelAug 22 2019Many real-world networks are globally sparse but locally dense. Typical examples are social networks, biological networks, and information networks. This double structural nature makes it difficult to adopt a homogeneous visualization model that clearly ... More
A 'Canny' Approach to Spoken Language InterfacesAug 21 2019Voice-enabled artefacts such as Amazon Echo are very popular, but there appears to be a 'habitability gap' whereby users fail to engage with the full capabilities of the device. This position paper draws a parallel with the 'uncanny valley' effect, thereby ... More
Visualization in the preprocessing phase: an interview study with enterprise professionalsAug 21 2019The current information age has increasingly required organizations to become data-driven. However, analyzing and managing raw data is still a challenging part of the data mining process. Even though we can find interview studies proposing design implications ... More
A Quality Metric for Visualization of Clusters in GraphsAug 21 2019Traditionally, graph quality metrics focus on readability, but recent studies show the need for metrics which are more specific to the discovery of patterns in graphs. Cluster analysis is a popular task within graph analysis, yet there is no metric yet ... More
Towards a Structural Framework for Explicit Domain Knowledge in Visual AnalyticsAug 21 2019Clinicians and other analysts working with healthcare data are in need for better support to cope with large and complex data. While an increasing number of visual analytics environments integrates explicit domain knowledge as a means to deliver a precise ... More
ElectroLens: Understanding Atomistic Simulations Through Spatially-resolved Visualization of High-dimensional FeaturesAug 20 2019In recent years, machine learning (ML) has gained significant popularity in the field of chemical informatics and electronic structure theory. These techniques often require researchers to engineer abstract "features" that encode chemical concepts into ... More
Challenges of Designing HCI for Negative EmotionsAug 20 2019Emotions that are perceived as "negative" are inherent in the human experience. Yet not much work in the field of HCI has looked into the role of these emotions in interaction with technology. As technology is becoming more social, personal and emotional ... More
Championing Research Through Design in HRIAug 20 2019One of the challenges in conducting research on the intersection of the CHI and Human-Robot Interaction (HRI) communities is in addressing the gap of acceptable design research methods between the two. While HRI is focused on interaction with robots and ... More
Preserving Command Line Workflow for a Package Management System using ASCII DAG VisualizationAug 20 2019Package managers provide ease of access to applications by removing the time-consuming and sometimes completely prohibitive barrier of successfully building, installing, and maintaining the software for a system. A package dependency contains dependencies ... More
Flud: a hybrid crowd-algorithm approach for visualizing biological networksAug 20 2019Modern experiments in many disciplines generate large quantities of network (graph) data. Researchers require aesthetic layouts of these networks that clearly convey the domain knowledge and meaning. However, the problem remains challenging due to multiple ... More
Multi-Modal Recognition of Worker Activity for Human-Centered Intelligent ManufacturingAug 20 2019In a human-centered intelligent manufacturing system, sensing and understanding of the worker's activity are the primary tasks. In this paper, we propose a novel multi-modal approach for worker activity recognition by leveraging information from different ... More
Evaluating Alignment Approaches in Superimposed Time-Series and Temporal Event-Sequence VisualizationsAug 20 2019Composite temporal event sequence visualizations have included sentinel event alignment techniques to cope with data volume and variety. Prior work has demonstrated the utility of using single-event alignment for understanding the precursor, co-occurring, ... More
StateLens: A Reverse Engineering Solution for Making Existing Dynamic Touchscreens AccessibleAug 20 2019Blind people frequently encounter inaccessible dynamic touchscreens in their everyday lives that are difficult, frustrating, and often impossible to use independently. Touchscreens are often the only way to control everything from coffee machines and ... More
Landmark Map: An Extension of the Self-Organizing Map for a User-Intended Nonlinear ProjectionAug 20 2019The self-organizing map (SOM) is an unsupervised artificial neural network that is widely used in, e.g., data mining and visualization. Supervised and semi-supervised learning methods have been proposed for the SOM. However, their teacher labels do not ... More
Estimating Attention Flow in Online Video NetworkAug 20 2019Online videos have shown tremendous increase in Internet traffic. Most video hosting sites implement recommender systems, which connect the videos into a directed network and conceptually act as a source of pathways for users to navigate. At present, ... More
Fuzzy C-Means Clustering and Sonification of HRV FeaturesAug 19 2019Linear and non-linear measures of heart rate variability (HRV) are widely investigated as non-invasive indicators of health. Stress has a profound impact on heart rate, and different meditation techniques have been found to modulate heartbeat rhythm. ... More
Mobile community sensing with smallholder farmers in a developing nation; A scaled pilot for crop health monitoringAug 19 2019Previously, crowdsourcing experiments in surveillance of crop diseases and pest have been trialed as small scale community sensing campaigns with select cohort of smallholder farmers, extension and experts. While those pilots have demonstrated the viability ... More
Thumbnails for Data Stories: A Survey of Current PracticesAug 19 2019When people browse online news, small thumbnail images accompanying links to articles attract their attention and help them to decide which articles to read. As an increasing proportion of online news can be construed as data journalism, we have witnessed ... More
Three Dimensions of Privacy PoliciesAug 19 2019Privacy policies are the main way to obtain information related to personal data collection and processing.Originally, privacy policies were presented as textual documents. However, the unsuitability of this format for the needs of today's society gave ... More
A Software to Detect OCC Emotion, Big-Five Personality and Hofstede Cultural Dimensions of Pedestrians from Video SequencesAug 18 2019This paper presents a video analysis application to detect personality, emotion and cultural aspects from pedestrians in video sequences, along with a visualizer of features. The proposed model considers a series of characteristics of the pedestrians ... More
Understanding Cyber Athletes Behaviour Through a Smart Chair: CS:GO and Monolith Team ScenarioAug 18 2019eSports is the rapidly developing multidisciplinary domain. However, research and experimentation in eSports are in the infancy. In this work, we propose a smart chair platform - an unobtrusive approach to the collection of data on the eSports athletes ... More
Sensors and Game Synchronization for Data Analysis in eSportsAug 18 2019eSports industry has greatly progressed within the last decade in terms of audience and fund rising, broadcasting, networking and hardware. Since the number and quality of professional team has evolved too, there is a reasonable need in improving skills ... More
Towards Understanding of eSports Athletes' Potentialities: The Sensing System for Data Collection and AnalysisAug 18 2019eSports is a developing multidisciplinary research area. At present, there is a lack of relevant data collected from real eSports athletes and lack of platforms which could be used for the data collection and further analysis. In this paper, we present ... More
eSports Pro-Players Behavior During the Game Events: Statistical Analysis of Data Obtained Using the Smart ChairAug 18 2019Today's competition between the professional eSports teams is so strong that in-depth analysis of players' performance literally crucial for creating a powerful team. There are two main approaches to such an estimation: obtaining features and metrics ... More
Fairness Issues in AI Systems that Augment Sensory AbilitiesAug 16 2019Systems that augment sensory abilities are increasingly employing AI and machine learning (ML) approaches, with applications ranging from object recognition and scene description tools for blind users to sound awareness tools for d/Deaf users. However, ... More
A Projection-based Augmented Reality for Elderly People with DementiaAug 16 2019As aging societies grow, researchers are actively studying care systems concerning the life and diseases of the elderly. Among these diseases, dementia makes it difficult to maintain daily life due to the degradation of cognitive functioning, memory, ... More
Context-Aware Emotion Recognition NetworksAug 16 2019Traditional techniques for emotion recognition have focused on the facial expression analysis only, thus providing limited ability to encode context that comprehensively represents the emotional responses. We present deep networks for context-aware emotion ... More
MFA is a Waste of Time! Understanding Negative Connotation Towards MFA Applications via User Generated ContentAug 16 2019Traditional single-factor authentication possesses several critical security vulnerabilities due to single-point failure feature. Multi-factor authentication (MFA), intends to enhance security by providing additional verification steps. However, in practical ... More
Evaluating User Perception of Multi-Factor Authentication: A Systematic ReviewAug 16 2019Security vulnerabilities of traditional single factor authentication has become a major concern for security practitioners and researchers. To mitigate single point failures, new and technologically advanced Multi-Factor Authentication (MFA) tools have ... More
All About Phishing: Exploring User Research through a Systematic Literature ReviewAug 16 2019Phishing is a well-known cybersecurity attack that has rapidly increased in recent years. It poses legitimate risks to businesses, government agencies, and all users due to sensitive data breaches, subsequent financial and productivity losses, and social ... More
SAX Navigator: Time Series Exploration through Hierarchical ClusteringAug 15 2019Comparing many long time series is challenging to do by hand. Clustering time series enables data analysts to discover relevance between and anomalies among multiple time series. However, even after reasonable clustering, analysts have to scrutinize correlations ... More
When Your Friends Become Sellers: An Empirical Study of Social Commerce Site BeidianAug 15 2019Past few years have witnessed the emergence and phenomenal success of strong-tie based social commerce. Embedded in social networking sites, these E-Commerce platforms transform ordinary people into sellers, where they advertise and sell products to their ... More
Evaluating Empathy in Artificial AgentsAug 14 2019The novel research area of computational empathy is in its infancy and moving towards developing methods and standards. One major problem is the lack of agreement on the evaluation of empathy in artificial interactive systems. Even though the existence ... More
Why Should the Q-method be Integrated Into the Design Science Research? A Systematic Mapping StudyAug 14 2019The Q-method has been utilized over time in various areas, including information systems. In this study, we used a systematic mapping to illustrate how the Q-method was applied within Information Systems (IS) community and proposing towards the integration ... More
A Research Framework for Virtual Reality Neurosurgery Based on Open-Source ToolsAug 14 2019Fully immersive virtual reality (VR) has the potential to improve neurosurgical planning. For example, it may offer 3D visualizations of relevant anatomical structures with complex shapes, such as blood vessels and tumors. However, there is a lack of ... More
Assessing Workers Perceived Risk During Construction Task Using A Wristband-Type BiosensorAug 14 2019The construction industry has demonstrated a high frequency and severity of accidents. Construction accidents are the result of the interaction between unsafe work conditions and workers unsafe behaviors. Given this relation, perceived risk is determined ... More
WiFi-based Real-time Breathing and Heart Rate Monitoring during SleepAug 14 2019Good quality sleep is essential for good health and sleep monitoring becomes a vital research topic. This paper provides a low cost, continuous and contactless WiFi-based vital signs (breathing and heart rate) monitoring method. In particular, we set ... More
Probabilistic Multimodal Modeling for Human-Robot Interaction TasksAug 14 2019Human-robot interaction benefits greatly from multimodal sensor inputs as they enable increased robustness and generalization accuracy. Despite this observation, few HRI methods are capable of efficiently performing inference for multimodal systems. In ... More
Entertaining and Opinionated but Too Controlling: A Large-Scale User Study of an Open Domain Alexa Prize SystemAug 13 2019Conversational systems typically focus on functional tasks such as scheduling appointments or creating todo lists. Instead we design and evaluate SlugBot (SB), one of 8 semifinalists in the 2018 AlexaPrize, whose goal is to support casual open-domain ... More
General Hand Guidance Framework using Microsoft HoloLensAug 13 2019Hand guidance emerged from the safety requirements for collaborative robots, namely possessing joint-torque sensors. Since then it has proven to be a powerful tool for easy trajectory programming, allowing lay-users to reprogram robots intuitively. Going ... More
Evaluation of a Recommender System for Assisting Novice Game DesignersAug 13 2019Game development is a complex task involving multiple disciplines and technologies. Developers and researchers alike have suggested that AI-driven game design assistants may improve developer workflow. We present a recommender system for assisting humans ... More
Modeling Personality vs. Modeling Personalidad: In-the-wild Mobile Data Analysis in Five Countries Suggests Cultural Impact on Personality ModelsAug 13 2019Sensor data collected from smartphones provides the possibility to passively infer a user's personality traits. Such models can be used to enable technology personalization, while contributing to our substantive understanding of how human behavior manifests ... More
Why Does a Visual Question Have Different Answers?Aug 12 2019Visual question answering is the task of returning the answer to a question about an image. A challenge is that different people often provide different answers to the same visual question. To our knowledge, this is the first work that aims to understand ... More
Why Does a Visual Question Have Different Answers?Aug 12 2019Aug 14 2019Visual question answering is the task of returning the answer to a question about an image. A challenge is that different people often provide different answers to the same visual question. To our knowledge, this is the first work that aims to understand ... More
The Evolution of IJHCS and CHI: A Quantitative AnalysisAug 12 2019In this paper we focus on the International Journal of Human-Computer Studies (IJHCS) as a domain of analysis, to gain insights about its evolution in the past 50 years and what this evolution tells us about the research landscape associated with the ... More
Fast Adaptation with Meta-Reinforcement Learning for Trust Modelling in Human-Robot InteractionAug 12 2019In socially assistive robotics, an important research area is the development of adaptation techniques and their effect on human-robot interaction. We present a meta-learning based policy gradient method for addressing the problem of adaptation in human-robot ... More
Toward a Taxonomy of Inventory Systems for Virtual Reality GamesAug 09 2019Virtual reality (VR) games are gradually becoming more elaborated and feature-rich, but fail to reach the complexity of traditional digital games. One common feature that is used to extend and organize complex gameplay is the in-game inventory, which ... More
Making GDPR Usable: A Model to Support Usability Evaluations of PrivacyAug 09 2019We introduce a new perspective on the evaluation of privacy, where rights of the data subjects, privacy principles, and usability criteria are intertwined. This new perspective is visually represented through a cube where each of its three axes of variability ... More
MakeSense: An IoT Testbed for Social Research of Indoor ActivitiesAug 09 2019There has been increasing interest in deploying IoT devices to study human behaviour in locations such as homes and offices. Such devices can be deployed in a laboratory or `in the wild' in natural environments. The latter allows one to collect behavioural ... More
Crowdsourcing real-time viral disease and pest information. A case of nation-wide cassava disease surveillance in a developing countryAug 09 2019In most developing countries, a huge proportion of the national food basket is supported by small subsistence agricultural systems. A major challenge to these systems is disease and pest attacks which have a devastating effect on the smallholder farmers ... More
Efficient 3D Reconstruction and Streaming for Group-Scale Multi-Client Live TelepresenceAug 08 2019Sharing live telepresence experiences for teleconferencing or remote collaboration receives increasing interest with the recent progress in capturing and AR/VR technology. Whereas impressive telepresence systems have been proposed on top of on-the-fly ... More
A VR System for Immersive Teleoperation and Live Exploration with a Mobile RobotAug 08 2019Applications like disaster management and industrial inspection often require experts to enter contaminated places. To circumvent the need for physical presence, it is desirable to generate a fully immersive individual live teleoperation experience. However, ... More
VisJSClassificator -- Manual Visual Collaborative Classification Graph-based ToolAug 08 2019Analysts need to classify, search and correlate numerous images. Automatic classification tools improve the efficiency of such tasks. However, classified data is a prerequisite to develop these tools. Labelling tools are of great use in case of already ... More
Recent Trends in Deep Learning Based Personality DetectionAug 07 2019In the recent times, automatic detection of human personality traits has received a lot of attention. Specifically, multimodal personality trait prediction has emerged as a hot topic within the field of affective computing. In this paper, we give an overview ... More
Speculative Execution for Guided Visual AnalyticsAug 07 2019We propose the concept of Speculative Execution for Visual Analytics and discuss its effectiveness for model exploration and optimization. Speculative Execution enables the automatic generation of alternative, competing model configurations that do not ... More
Task-Oriented Optimal Sequencing of Visualization ChartsAug 07 2019A chart sequence is used to describe a series of visualization charts generated in the exploratory analysis by data analysts. It provides information details in each chart as well as a logical relationship among charts. While existing research targets ... More
DronePick: Object Picking and Delivery Teleoperation with the Drone Controlled by a Wearable Tactile DisplayAug 07 2019We report on the teleoperation system DronePick which provides remote object picking and delivery by a human-controlled quadcopter. The main novelty of the proposed system is that the human user continuously gets the visual and haptic feedback for accurate ... More
From Crowdsourcing to Crowdmining: Using Implicit Human Intelligence for Better Understanding of Crowdsourced DataAug 07 2019With the development of mobile social networks, more and more crowdsourced data are generated on the Web or collected from real-world sensing. The fragment, heterogeneous, and noisy nature of online/offline crowdsourced data, however, makes it difficult ... More
Blocks: Collaborative and Persistent Augmented Reality ExperiencesAug 07 2019Aug 14 2019We introduce Blocks, a mobile application that enables people to co-create AR structures that persist in the physical environment. Using Blocks, end users can collaborate synchronously or asynchronously, whether they are colocated or remote. Additionally, ... More
Blocks: Collaborative and Persistent Augmented Reality ExperiencesAug 07 2019We introduce Blocks, a mobile application that enables people to co-create AR structures that persist in the physical environment. Using Blocks, end users can collaborate synchronously or asynchronously, whether they are colocated or remote. Additionally, ... More
Flexibly-Structured Model for Task-Oriented DialoguesAug 06 2019This paper proposes a novel end-to-end architecture for task-oriented dialogue systems. It is based on a simple and practical yet very effective sequence-to-sequence approach, where language understanding and state tracking tasks are modeled jointly with ... More
Practical Speech Recognition with HTKAug 06 2019The practical aspects of developing an Automatic Speech Recognition System (ASR) with HTK are reviewed. Steps are explained concerning hardware, software, libraries, applications and computer programs used. The common procedure to rapidly apply speech ... More
Origin-Destination Flow Maps in Immersive EnvironmentsAug 06 2019Immersive virtual- and augmented-reality headsets can overlay a flat image against any surface or hang virtual objects in the space around the user. The technology is rapidly improving and may, in the long term, replace traditional flat panel displays ... More
Maps and Globes in Virtual RealityAug 06 2019This paper explores different ways to render world-wide geographic maps in virtual reality (VR). We compare: (a) a 3D exocentric globe, where the user's viewpoint is outside the globe; (b) a flat map (rendered to a plane in VR); (c) an egocentric 3D globe, ... More
Many-to-Many Geographically-Embedded Flow Visualisation: An EvaluationAug 06 2019Showing flows of people and resources between multiple geographic locations is a challenging visualisation problem. We conducted two quantitative user studies to evaluate different visual representations for such dense many-to-many flows. In our first ... More
RSATree: Distribution-Aware Data Representation of Large-Scale Tabular Datasets for Flexible Visual QueryAug 06 2019Analysts commonly investigate the data distributions derived from statistical aggregations of data that are represented by charts, such as histograms and binned scatterplots, to visualize and analyze a large-scale dataset. Aggregate queries are implicitly ... More
Using the Makerspace to Create Educational Open-source Software for Electrical Circuits: A Learning ExperienceAug 06 2019Virtual learning environments are a useful modality for engaging students in the classroom by affording them a sense of presence and immersion. The motivation of this project was to create an open-source augmented reality electrical circuit application ... More
Sabrina: Modeling and Visualization of Economy Data with Incremental Domain KnowledgeAug 05 2019Investment planning requires knowledge of the financial landscape on a large scale, both in terms of geo-spatial and industry sector distribution. There is plenty of data available, but it is scattered across heterogeneous sources (newspapers, open data, ... More
A Weakly-Supervised Attention-based Visualization Tool for Assessing Political AffiliationAug 05 2019In this work, we seek to finetune a weakly-supervised expert-guided Deep Neural Network (DNN) for the purpose of determining political affiliations. In this context, stance detection is used for determining political affiliation or ideology which is framed ... More
Thoth: Improved Rapid Serial Visual Presentation using Natural Language ProcessingAug 05 2019Thoth is a tool designed to combine many different types of speed reading technology. The largest insight is using natural language parsing for more optimal rapid serial visual presentation and more effective reading information.
Why Authors Don't Visualize UncertaintyAug 05 2019Clear presentation of uncertainty is an exception rather than rule in media articles, data-driven reports, and consumer applications, despite proposed techniques for communicating sources of uncertainty in data. This work considers, Why do so many visualization ... More
Discriminating Spatial and Temporal Relevance in Deep Taylor Decompositions for Explainable Activity RecognitionAug 05 2019Aug 14 2019Current techniques for explainable AI have been applied with some success to image processing. The recent rise of research in video processing has called for similar work n deconstructing and explaining spatio-temporal models. While many techniques are ... More
Discriminating Spatial and Temporal Relevance in Deep Taylor Decompositions for Explainable Activity RecognitionAug 05 2019Current techniques for explainable AI have been applied with some success to image processing. The recent rise of research in video processing has called for similar work n deconstructing and explaining spatio-temporal models. While many techniques are ... More
3D Reconstruction of Deformable Revolving Object under Heavy Hand InteractionAug 05 2019We reconstruct 3D deformable object through time, in the context of a live pottery making process where the crafter molds the object. Because the object suffers from heavy hand interaction, and is being deformed, classical techniques cannot be applied. ... More
Characterising Volunteers' Task Execution Patterns Across Projects on Multi-Project Citizen Science PlatformsAug 04 2019Citizen science projects engage people in activities that are part of a scientific research effort. On multi-project citizen science platforms, scientists can create projects consisting of tasks. Volunteers, in turn, participate in executing the project's ... More
Characterising Volunteers' Task Execution Patterns Across Projects on Multi-Project Citizen Science PlatformsAug 04 2019Aug 12 2019Citizen science projects engage people in activities that are part of a scientific research effort. On multi-project citizen science platforms, scientists can create projects consisting of tasks. Volunteers, in turn, participate in executing the project's ... More
Interactive Visualisation of Hierarchical Quantitative Data: an EvaluationAug 04 2019We have compared three common visualisations for hierarchical quantitative data, treemaps, icicle plots and sunburst charts as well as a semicircular variant of sunburst charts we call the sundown chart. In a pilot study, we found that the sunburst chart ... More
Epistemological approach in immersive virtual environments and the neurophysiology learning processAug 04 2019Currently virtual reality (VR) usage in training processes is increasing due to their usefulness in the learning processes based on visual information empowered. The information in virtual environments is perceived by sight, sound and touch, but the relationship ... More
Automated Corrosion Detection Using Crowd Sourced Training for Deep LearningAug 04 2019The automated detection of corrosion from images (i.e., photographs) or video (i.e., drone footage) presents significant advantages in terms of corrosion monitoring. Such advantages include access to remote locations, mitigation of risk to inspectors, ... More
Machinic Surrogates: Human-Machine Relationships in Computational CreativityAug 03 2019Recent advancements in artificial intelligence (AI) and its sub-branch machine learning (ML) promise machines that go beyond the boundaries of automation and behave autonomously. Applications of these machines in creative practices such as art and design ... More
Situation-Aware Left-Turning Connected and Automated Vehicle Operation at Signalized IntersectionsAug 02 2019One challenging aspect of the Connected and Automated Vehicle (CAV) operation in mixed traffic is the development of a situation awareness module for CAVs. While operating on public roads, CAVs need to assess the surrounding, especially intentions of ... More
High-Level Control of Drum Track Generation Using Learned Patterns of Rhythmic InteractionAug 02 2019Spurred by the potential of deep learning, computational music generation has gained renewed academic interest. A crucial issue in music generation is that of user control, especially in scenarios where the music generation process is conditioned on existing ... More
Analyzing Time Attributes in Temporal Event SequencesAug 02 2019Event data is present in a variety of domains such as electronic health records, daily living activities and web clickstream records. Current visualization methods to explore event data focus on discovering sequential patterns but present limitations ... More
The Impact of Time on Hashtag Reuse in Twitter: A Cognitive-Inspired Hashtag Recommendation ApproachAug 02 2019In our work [KPL17], we study temporal usage patterns of Twitter hashtags, and we use the Base-Level Learning (BLL) equation from the cognitive architecture ACT-R [An04] to model how a person reuses her own, individual hashtags as well as hashtags from ... More
Clustering Wi-Fi Fingerprints for Indoor-Outdoor DetectionAug 02 2019This paper presents a method for continuous indoor-outdoor environment detection on mobile devices based solely on WiFi fingerprints. Detection of indoor outdoor switching is an important part of identifying a user's context, and it provides important ... More
A Visual Technique to Analyze Flow of Information in a Machine Learning SystemAug 02 2019Machine learning (ML) algorithms and machine learning based software systems implicitly or explicitly involve complex flow of information between various entities such as training data, feature space, validation set and results. Understanding the statistical ... More
Towards Learning How to Properly Play UNO with the iCub RobotAug 02 2019While interacting with another person, our reactions and behavior are much affected by the emotional changes within the temporal context of the interaction. Our intrinsic affective appraisal comprising perception, self-assessment, and the affective memories ... More
OntoPlot: A Novel Visualisation for Non-hierarchical Associations in Large OntologiesAug 02 2019Ontologies are formal representations of concepts and complex relationships among them. They have been widely used to capture comprehensive domain knowledge in areas such as biology and medicine, where large and complex ontologies can contain hundreds ... More
FlowSense: A Natural Language Interface for Visual Data Exploration within a Dataflow SystemAug 02 2019Dataflow visualization systems enable flexible visual data exploration by allowing the user to construct a dataflow diagram that composes query and visualization modules to specify system functionality. However learning dataflow diagram usage presents ... More
Designing for Mobile and Immersive Visual Analytics in the FieldAug 02 2019Data collection and analysis in the field is critical for operations in domains such as environmental science and public safety. However, field workers currently face data- and platform-oriented issues in efficient data collection and analysis in the ... More
Investigating Direct Manipulation of Graphical Encodings as a Method for User InteractionAug 02 2019We investigate direct manipulation of graphical encodings as a method for interacting with visualizations. There is an increasing interest in developing visualization tools that enable users to perform operations by directly manipulating graphical encodings ... More
FeatureExplorer: Interactive Feature Selection and Exploration of Regression Models for Hyperspectral ImagesAug 02 2019Feature selection is used in machine learning to improve predictions, decrease computation time, reduce noise, and tune models based on limited sample data. In this article, we present FeatureExplorer, a visual analytics system that supports the dynamic ... More
Visualising Geographically-Embedded Origin-Destination Flows: in 2D and immersive environmentsAug 01 2019Aug 06 2019This thesis develops and evaluates effective techniques for visualisation of flows (e.g. of people, trade, knowledge) between places on geographic maps. This geographically-embedded flow data contains information about geographic locations, and flows ... More
Common Fate for Animated Transitions in VisualizationAug 01 2019The Law of Common Fate from Gestalt psychology states that visual objects moving with the same velocity along parallel trajectories will be perceived by a human observer as grouped. However, the concept of common fate is much broader than mere velocity; ... More
Color Crafting: Automating the Construction of Designer Quality Color RampsAug 01 2019Visualizations often encode numeric data using sequential and diverging color ramps. Effective ramps use colors that are sufficiently discriminable, align well with the data, and are aesthetically pleasing. Designers rely on years of experience to create ... More
Vis4Vis: Visualization for (Empirical) Visualization ResearchAug 01 2019Appropriate evaluation is a key component in visualization research. It is typically based on empirical studies that assess visualization components or complete systems. While such studies often include the user of the visualization, empirical research ... More
ReConstructor: A Scalable Constructive Visualization ToolAug 01 2019Constructive approaches to visualization authoring have been shown to offer advantages such as providing options for flexible outputs, scaffolding and ideation of new data mappings, personalized exploration of data, as well as supporting data understanding ... More
Evaluating an Immersive Space-Time Cube Geovisualization for Intuitive Trajectory Data ExplorationAug 01 2019A Space-Time Cube enables analysts to clearly observe spatio-temporal features in movement trajectory datasets in geovisualization. However, its general usability is impacted by a lack of depth cues, a reported steep learning curve, and the requirement ... More
Evaluating Ordering Strategies of Star Glyph AxesAug 01 2019Star glyphs are a well-researched visualization technique to represent multi-dimensional data. They are often used in small multiple settings for a visual comparison of many data points. However, their overall visual appearance is strongly influenced ... More
Design by Immersion: A Transdisciplinary Approach to Problem-Driven VisualizationsAug 01 2019While previous work exists on how to conduct and disseminate insights from problem-driven visualization projects and design studies, the literature does not address how to accomplish these goals in transdisciplinary teams in ways that advance all disciplines ... More