@article{Meier, author = {Meier, Sebastian}, title = {The Marker Cluster}, series = {International Journal of Agricultural and Environmental Information Systems}, volume = {7}, journal = {International Journal of Agricultural and Environmental Information Systems}, number = {1}, publisher = {IGI Global}, address = {Hershey}, issn = {1947-3206}, doi = {10.4018/IJAEIS.2016010102}, pages = {28 -- 43}, abstract = {The growing amount of gathered, stored and available data is creating a need for useful mass-data visualizations in many domains. The mapping of large spatial data sets is not only of interest for experts anymore, but, with regard to the latest advances in web cartography, also moves into the domain of public cartographic applications. One interactive web-based cartographic interface design pattern that helps with visualizing and interacting with large, high density data sets is the marker cluster; a functionality already in use in many web-based products and solutions. In this article, the author will present their ongoing research on the problem of "too many markers." They will present an empirical evaluation and comparison of marker cluster techniques and similar approaches, including heatmaps and tiled heatmaps. They conclude with a first concept for overcoming some of the obstacles that they were able to identify in their study and thereby introduce a new direction for further research.}, subject = {Big Data}, language = {en} } @incollection{Meier, author = {Meier, Sebastian}, title = {Visualizing Large Spatial Time Series Data on Mobile Devices}, series = {Cartography : Maps Connecting the World}, booktitle = {Cartography : Maps Connecting the World}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-17738-0}, issn = {1863-2351}, doi = {10.1007/978-3-319-17738-0_12}, publisher = {Fachhochschule Potsdam}, pages = {161 -- 173}, abstract = {This paper introduces an approach for visualizing large spatial time series data sets on mobile devices. The HeatTile system (Meier et al. 2014) is used and extended with a progressive loading approach, the stream approach. By combining those two approaches, this study aimed to overcome the performance and bandwidth limitations inherent to mobile devices. This chapter focuses on the technological advantages of the presented approach in a performance comparison with other common approaches. Furthermore, an animated time series visualization is introduced, as well as an interface designed specifically for the presented method in order to emphasize the advantages of the approach. To further highlight the possible applications of the method, two real-world use cases are presented.}, subject = {Visualisierung}, language = {en} } @incollection{NagelPschetzStefaneretal., author = {Nagel, Tina and Pschetz, Larissa and Stefaner, Moritz and M{\"u}ller, Boris}, title = {m{\ae}ve - Eine interaktive Tabletop-Installation}, series = {Kultur und Informatik : interaktive Systeme}, booktitle = {Kultur und Informatik : interaktive Systeme}, publisher = {H{\"u}lsbusch}, address = {Boizenburg}, isbn = {978-3-940317-72-8}, pages = {287 -- 298}, subject = {Mensch-Maschine-Kommunikation}, language = {de} } @article{DoerkPietschCredico, author = {D{\"o}rk, Marian and Pietsch, Christopher and Credico, Gabriel}, title = {One view is not enough High-level visualizations of a large cultural collection}, series = {Information Design Journal}, volume = {23}, journal = {Information Design Journal}, number = {1}, publisher = {John Benjamins Publishing}, address = {Amsterdam}, issn = {1569-979X}, doi = {10.1075/idj.23.1.06dor}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-26609}, pages = {39 -- 47}, abstract = {As cultural institutions are digitizing their artifacts and interlinking their collections, new opportunities emerge to engage with cultural heritage. However, it is the often comprehensive and complex nature of collections that can make it difficult to grasp their distribution and extent across a variety of dimensions. After a brief introduction to the research area of collection visualizations, this paper presents a design study visualizing an aggregated collection from diverse cultural institutions in Germany. We detail our iterative design process leading to prototypical implementations of four stylistically and functionally coordinated visualizations, each one focusing on different facets of the collection.}, subject = {Visualisierung}, language = {en} } @article{BeechamRooneyMeieretal., author = {Beecham, R. and Rooney, C. and Meier, S. and Dykes, J. and Slingsby, A and Turkay, C. and Wood, J. and Wood, B. L. and Wong, W.}, title = {Faceted Views of Varying Emphasis (FaVVEs)}, series = {Computer Graphics Forum}, volume = {35}, journal = {Computer Graphics Forum}, number = {3}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1467-8659}, doi = {10.1111/cgf.12900}, pages = {241 -- 249}, abstract = {Many datasets have multiple perspectives - for example space, time and description - and often analysts are required to study these multiple perspectives concurrently. This concurrent analysis becomes difficult when data are grouped and split into small multiples for comparison. A design challenge is thus to provide representations that enable multiple perspectives, split into small multiples, to be viewed simultaneously in ways that neither clutter nor overload. We present a design framework that allows us to do this. We claim that multi-perspective comparison across small multiples may be possible by superimposing perspectives on one another rather than juxtaposing those perspectives side-by-side. This approach defies conventional wisdom and likely results in visual and informational clutter. For this reason we propose designs at three levels of abstraction for each perspective. By flexibly varying the abstraction level, certain perspectives can be brought into, or out of, focus. We evaluate our framework through laboratory-style user tests. We find that superimposing, rather than juxtaposing, perspective views has little effect on performance of a low-level comparison task. We reflect on the user study and its design to further identify analysis situations for which our framework may be desirable. Although the user study findings were insufficiently discriminating, we believe our framework opens up a new design space for multi-perspective visual analysis.}, subject = {Visualisierung}, language = {en} } @inproceedings{Meier, author = {Meier, Sebastian}, title = {Enhancing Location Recommendation Through Proximity Indicators, Areal Descriptors, and Similarity Clusters}, series = {Progress in Location-Based Services 2016}, booktitle = {Progress in Location-Based Services 2016}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-47289-8}, issn = {1863-2351}, doi = {10.1007/978-3-319-47289-8_14}, pages = {273 -- 291}, abstract = {Location recommendation (LR) or rather location-based recommender systems (LBRS) are an integral part of modern location-based services (LBS). Most LR algorithms only focus on location-specific attributes when calculating recommendations, while completely ignoring the urban structure surrounding the locations. (In this paper we refer to a geographic coordinate (latitude and longitude) as position. Locations and places in contrast refer to physical entities e.g. a restaurant, a bus stop or a lake). This paper demonstrates how the urban structure can be modelled in LR calculations by using data from OpenStreetMap (OSM) and the location data itself. Based on these datasets, we present two approaches to extend the LR process by (1) including the urban structure in direct proximity of the location (Proximity Indicators and Areal Descriptors) and by (2) not only looking for individual locations but location clusters (Similarity Clusters). Thereby we acknowledge the complexity of a location, which can not be perceived as a detached entity. A location is part of a given urban structure and we need to include the parameters of this structure in our algorithms. A prototypical implementation compares locations from four major German cities: Berlin, Hamburg, Munich and Cologne and thereby highlights the applicability of the underlying data structures derived from OSM and the location data itself. We conclude by outlining the potential of the presented approaches in the context of LR as well as their relevancy for urban planning and neighboring disciplines.}, subject = {Empfehlungssystem}, language = {en} } @article{GortanavonTenspoldeGuhlmannetal., author = {Gortana, Flavio and von Tenspolde, Franziska and Guhlmann, Daniela and D{\"o}rk, Marian}, title = {Off the Grid}, series = {Open Library of Humanities}, volume = {4}, journal = {Open Library of Humanities}, number = {2}, publisher = {Open Library of Humanities}, address = {Cambridge}, issn = {2056-6700}, doi = {10.16995/olh.280}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-26527}, pages = {1 -- 25}, abstract = {This research explores the merit of alternative arrangements of cultural artifacts to expose the aesthetic abundance of a cultural collection. The conventional display of museum objects in online interfaces tends to neglect the physical gestalt of the collection. For example, coins typically end up in tabular grids of thumbnail pages in online collections mimicking their rigid placement in storage drawers of a depot and glass cabinets in exhibitions. The overall aim behind this research was to devise visualizations that do justice to the material and semantic richness of an entire collection, while providing a casual mode of access that is inviting to people with no background in numismatics. To do this, we undertook an iterative design process, which involved a close collaboration with numismaticians and playful ideation with actual coins. Carefully negotiating expert knowledge and lay curiosity, the resulting visualization represents the collection's dimensions using thousands of thumbnails as visual data points. The coins can be arranged into various layouts such as piles representing, for example, metal types, or streams visualizing the ebb and flow of coins over the centuries. In the interface, one can play with the coins in a manner that would be unthinkable in a physical exhibition and that has not been tried in a digital display. The article reports on the overall research and design process of this project, the resulting interface concept and prototype, and the feedback received during two evaluations.}, subject = {Visualisierung}, language = {en} } @article{MuellerRakowFlechtner, author = {M{\"u}ller-Rakow, Alexander and Flechtner, Rahel}, title = {Designing Interactive Music Systems with and for People with Dementia}, series = {The Design Journal}, volume = {20}, journal = {The Design Journal}, publisher = {Taylor \& Francis}, address = {Routledge}, issn = {1756-3062}, doi = {10.1080/14606925.2017.1352736}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-26563}, pages = {2207 -- 2214}, abstract = {In this paper, we outline the process applied in designing and developing an interactive and networked music system for people with dementia. We first describe the strategy we used to include both people with dementia and caretakers. As the symptoms of dementia vary greatly, we decided to address this diversity of needs. We describe the use-scenarios, which illustrate how people with dementia can gain access to curated selections of biographically meaningful music and take part in music therapy even if restricted mobility prevents their physical presence at sessions. Secondly, we focus on the structural and aesthetic requirements for the interaction design of tangible and screen-based user-interfaces. We conclude with issues of usability and levels of playfulness based on interactive prototypes that differ in complexity and form, and we share proposals for designing with and for dementia patients.}, subject = {Demenz}, language = {en} } @inproceedings{WohlaufHemmertWettach, author = {Wohlauf, Anne and Hemmert, Fabian and Wettach, Reto}, title = {The Haptic Body Scale}, series = {TEI '17: Proceedings of the Eleventh International Conference on Tangible, Embedded, and Embodied Interaction}, booktitle = {TEI '17: Proceedings of the Eleventh International Conference on Tangible, Embedded, and Embodied Interaction}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-4503-4676-4}, doi = {10.1145/3024969.3025003}, pages = {367 -- 373}, abstract = {Followers of the Quantified Self movement track, analyze and compare vital and environmental data to optimize themselves. It can be stressful to keep all the measured values under control when pursuing this ambitious way of life. Body weight can be an especially emotional issue for many people and slight differences can be perceived as lack of discipline, although little fluctuations are natural. In this paper, we present a tangible display for body weight, based on floor rigidity. It displays body weight without numbers, which makes it less suitable for comparisons, while still giving the user an idea about their weight. We describe the metaphorical foundations of the concept, as well as the development of two prototypes, which implement the envisioned full-body weighing experience. We demonstrate how the design of a display can influence the users' connotation of data.}, subject = {Haptische Feedback-Technologie}, language = {en} } @inproceedings{ZimmermannWettach, author = {Zimmermann, Raphael and Wettach, Reto}, title = {First Step into Visceral Interaction with Autonomous Vehicles}, series = {AutomotiveUI '17: Proceedings of the 9th International Conference on Automotive User Interfaces and Interactive Vehicular Applications}, booktitle = {AutomotiveUI '17: Proceedings of the 9th International Conference on Automotive User Interfaces and Interactive Vehicular Applications}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-4503-5150-8}, doi = {10.1145/3122986.3122988}, pages = {58 -- 64}, abstract = {Autonomous vehicles (AVs) seem to be the next big step into the future of mobility solutions. Various research institutions in the automobile industry and academic sectors are striving to come out with the most futuristic concept. This paper focuses on the interaction between AVs and pedestrians. Furthermore, the paper aims to explore if complex communication needs can be signaled to pedestrians through motion behavior of the vehicle. In order to learn how other road users feel surrounded by self-driving cars, participants were confronted with different drivability of a self-programmed vehicle during our evaluation. As the results show, the vehicle's motion behavior is able to evoke certain emotions, which in turn lead to rational decisions within the participants. This can be seen as a form of mutual communication.}, subject = {Autonomes Fahrzeug}, language = {en} }