hotauthor: choi_j* : Human-Computer Interaction Bibliography Search

[1] eBee: Merging Quilting, Electronics & Board Game Design Art Exhibition / Pearce, Celia / Smith, Gillian / Choi, Jeanie / Carlsson, Isabella Extended Abstracts of the ACM CHI'16 Conference on Human Factors in Computing Systems 2016-05-07 v.2 p.3877-3880

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Summary: eBee is a strategic board game that merges quilting, e-textiles and game design to bridge the gender, ethnic and generation gap in electronics. The game revolves around placing quilted tiles embedded with conductive fabric on a hexagonal grid. The goal is to complete a circuit by laying a path of conductive fabric between a centralized hub or power source, and satellite islands that illuminate when the circuit is completed. eBee aims to merge the social contexts of the female-friendly experience of a quilting bee, the multi-generational appeal of a board game, and the techno-creative practices the maker movement. While the game has stand-alone integrity as both an interactive artwork and a game, it also has the benefit of engaging players in learning about electricity. In addition to exhibiting and possibly selling the game as a completed product, we also plan to develop eBee workshops and an online set of instructables that encourage people to create their own eBees.

[2] Evento 360: Social Event Discovery from Web-scale Multimedia Collection Session: Multimedia Grand Challenge / Choi, Jaeyoung / Kim, Eungchan / Larson, Martha / Friedland, Gerald / Hanjalic, Alan Proceedings of the 2015 ACM International Conference on Multimedia 2015-10-26 p.193-196

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Summary: We present Evento 360 (URL: evento360.info), an online interactive social event browser, which allows the user to explore events detected within a web-scale multimedia corpus. The system addresses five key aspects of social multimedia event detection and summarization: multimodality, scale, diversity of representations, noise of multimedia items, and missing metadata. The detection algorithm uses unsupervised clustering approach that exploits temporal, spatial and textual metadata. For each detected event cluster, to choose the best subset of photos that meet both relevance and diversity criteria, the system uses hierarchical clustering that exploits both visual and audio information. Evento 360's user interface provides a search feature that is not limited to a certain set of events, but rather can handle an arbitrary event query. It allows the user to retrieve and explore relevant events. The system scales well and is effective in producing high-quality summaries of the detected events.

[3] Subjectivity in Aesthetic Quality Assessment of Digital Photographs: Analysis of User Comments Poster Session 1 / Kim, Won-Hee / Choi, Jun-Ho / Lee, Jong-Seok Proceedings of the 2015 ACM International Conference on Multimedia 2015-10-26 p.983-986

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Summary: While most of the existing work in aesthetic image quality assessment focuses on the overall (or average) opinion of users, this paper raises the issue of subjectivity (or taste) of aesthetic quality. We argue that subjectivity differs among different images, and investigate what causes such difference. We first analyze statistics of the user ratings of photos in a photo contest website, DPChallenge, in the viewpoint of average and standard deviation values of the ratings. Then, more importantly, we analyze the users' comments in order to identify sources contributing to subjectivity. When considering the importance of personalization in photo applications, we believe that our findings will be a valuable first step in the relevant future research.

[4] Automated Video Editing for Aesthetic Quality Improvement Poster Session 1 / Choi, Jun-Ho / Lee, Jong-Seok Proceedings of the 2015 ACM International Conference on Multimedia 2015-10-26 p.1003-1006

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Summary: In these days, a large number of videos is taken by various kinds of handheld devices, but many of them have poor aesthetic quality. In this paper, we present an automated video editing system that uses the shot length, camera motion, and color distribution as key aesthetic features. Given an amateur video, our system computes the original unrefined camera motion as homography and tries to remove some unreliable frames, which consequently splits the video into several shots. It then applies enhancement processes, including reconstruction of the overall camera motions and harmonization of color distributions. We apply our method to some amateur videos and evaluate the results through a subjective test. It is demonstrated that reducing the shot length in our method is a key point of editing that can lead enhanced satisfaction by viewers for the edited videos.

[5] Design on the BPEL Engine Generator for Adding New Functions Analytics, Visualisation and Decision-making / Kwak, Donggyu / Choi, Jongsun / Choi, Jaeyoung / Ko, Hoon HCIB 2015: 2nd International Conference on HCI in Business 2015-08-02 p.605-612

Keywords: Environmental impact assessment; Landscape visual impact assessment; Photo-manipulation; Photomontage

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Summary: Business Process Execution Language (BPEL) is widely using in various domains because it describes the flow of works depending on their conditions, rules and the call of Web services in service-oriented computing environment, and many experts have been studying the BPEL to use, but still the high cost is required in existing systems. Also, the systems can only add a single function, and it is difficult to design and add new functions as necessary. To overcome this problem, it suggests the new function (?) to be low cost BPEL engine generator by defining XAS4B document that can extend the grammar function of BPEL through XML schema in order to add new functions as necessary and by processing the document. However, new functions, which cannot be found in BPEL grammar, are required in a specific domain. When a new function, which does not exist in the existing language, is required, the domain-specific language should be newly defined and developed in general. One more advantage of the proposed system is able to add new functions without modifying BPEL engine by AspectJ.

[6] Growing food in the city: design ideations for urban residential gardeners Local Communities / Lyle, Peter / Choi, Jaz Hee-jeong / Foth, Marcus Proceedings of the 2015 International Conference on Communities and Technologies 2015-06-27 p.89-97

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Summary: Urban agriculture refers to the production of food in urban and peri-urban spaces. It can contribute positively to health and food security of a city, while also reducing 'food miles.' It takes on many forms, from the large and organised community garden, to the small and discrete backyard or balcony. This study focuses on small-scale food production in the form of residential gardening for home or personal use. We explore opportunities to support people's engagement in urban agriculture via human-computer interaction design. This research presents the findings and HCI design insights from our study of residential gardeners in Brisbane, Australia. By exploring their understanding of gardening practice with a human-centred design approach, we present six key themes, highlighting opportunities and challenges relating to available time and space; the process of learning and experimentation; and the role of existing online platforms to support gardening practice. Finally we discuss the overarching theme of shared knowledge, and how HCI could improve community engagement and gardening practice.

[7] Smith Search: Opinion-Based Restaurant Search Engine Demonstrations / Choi, Jaehoon / Kim, Donghyeon / Choi, Donghee / Lim, Sangrak / Kim, Seongsoon / Kang, Jaewoo / Choi, Youngjae Companion Proceedings of the 2015 International Conference on the World Wide Web 2015-05-18 v.2 p.187-190

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Summary: Search engines have become an important decision-making tool today. Unfortunately, they still need to improve in answering complex queries. The answers to complex decision-making queries such as "best burgers and fries" and "good restaurants for anniversary dinner," are often subjective. The most relevant answer to the query can be obtained by only collecting people's opinions about the query, which are expressed in various venues on the Web. Collected opinions are converted into a "consensus" list. All of this should be processed at query time, which is impossible under the current search paradigm. To address this problem, we introduce Smith, a novel opinion-based restaurant search engine. Smith actively processes opinions on the Web, blogs, review boards, and other forms of social media at index time, and produces consensus answers from opinions at query time. The Smith search app (iOS) is available for download at www.smithsearches.com/introduction/.

[8] User Defined Gestures for Augmented Virtual Mirrors: A Guessability Study WIP Theme: Augmented Reality / Lee, Gun A. / Wong, Jonathan / Park, Hye Sun / Choi, Jin Sung / Park, Chang Joon / Billinghurst, Mark Extended Abstracts of the ACM CHI'15 Conference on Human Factors in Computing Systems 2015-04-18 v.2 p.959-964

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Summary: Public information displays are evolving from passive screens into more interactive and smarter ubiquitous computing platforms. In this research we investigate applying gesture interaction and Augmented Reality (AR) technologies to make public information displays more intuitive and easy to use. We focus especially on designing intuitive gesture based interaction methods to use in combination with an augmented virtual mirror interface. As an initial step, we conducted a user study to identify the gestures that users feel are natural for performing common tasks when interacting with augmented virtual mirror displays. We report initial findings from the study, discuss design guidelines, and suggest future research directions.

[9] Real-Time Community Question Answering: Exploring Content Recommendation and User Notification Strategies Education / Crowdsourcing / Social / Liu, Qiaoling / Jurczyk, Tomasz / Choi, Jinho / Agichtein, Eugene Proceedings of the 2015 International Conference on Intelligent User Interfaces 2015-03-29 v.1 p.50-61

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Summary: Community-based Question Answering (CQA) services allow users to find and share information by interacting with others. A key to the success of CQA services is the quality and timeliness of the responses that users get. With the increasing use of mobile devices, searchers increasingly expect to find more local and time-sensitive information, such as the current special at a cafe around the corner. Yet, few services provide such hyper-local and time-aware question answering. This requires intelligent content recommendation and careful use of notifications (e.g., recommending questions to only selected users). To explore these issues, we developed RealQA, a real-time CQA system with a mobile interface, and performed two user studies: a formative pilot study with the initial system design, and a more extensive study with the revised UI and algorithms. The research design combined qualitative survey analysis and quantitative behavior analysis under different conditions. We report our findings of the prevalent information needs and types of responses users provided, and of the effectiveness of the recommendation and notification strategies on user experience and satisfaction. Our system and findings offer insights and implications for designing real-time CQA systems, and provide a valuable platform for future research.

[10] The Impact of User Control Design Types on People's Perception of a Robot Late-Breaking Reports -- Session 1 / Lee, Jee Yoon / Choi, Jung Ju / Kwak, Sonya S. Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.19-20

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Summary: This study suggests user control design as a way to increase social acceptance and usability of a robot. We executed a 3 (user control design: anthropomorphic control vs. non-anthropomorphic control vs. remote controller control) within-participants experiment design (N=24). When participants controlled a robot more anthropomorphically, they perceived a robot more sociable and were more satisfied with the service provided by a robot. This study provides evidence that user control design could be effectively used to increase social acceptance as well as usability of a robot. Implications for the design of human-robot interaction are discussed.

[11] An Interactive Robot Facilitating Social Skills for Children Late-Breaking Reports -- Session 2 / Yun, Sang-Seok / Choi, JongSuk / Park, Sung-Kee Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.95-96

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Summary: In this paper, we propose an interactive robot system to facilitate easy improvement of children's social capability, with robot-assisted interventions effectively offering social skill training for children with autism. This is achieved through therapeutic protocols with therapy, encouragement, and pause modes, which are determined by behavioral responses of children. Furthermore, the robot evaluates the level of children's reactivity in the child-robot interaction by recognition modules for frontal face and touch, and it generates appropriate training tasks through the combination of kinesic acts and displayable contents. From the experiments of the interplay training with autistic and non-autistic children, it is verified that the proposed system has positive effects on social development of children with autism spectrum disorders.

[12] The Effect of Robot Appearance Types and Task Types on Service Evaluation of a Robot Late-Breaking Reports -- Session 2 / Choi, Jung Ju / Kwak, Sonya S. Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.121-122

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Summary: Robot's appearance types could be classified into two types: human-oriented and product-oriented. Human-oriented robot resembles human's appearance whereas product-oriented robot is an intelligent product that robotic technologies are integrated into existing product. In this study, we investigated the impact of two robot appearance types and two task types on service evaluation of a robot. We executed a 2 (robot appearance types: human-oriented vs. product-oriented) x 2 (robot task types: social context vs. task-oriented context) mixed-participants experiment design (N=48). In the case of social context, people evaluated the service provided by a human-oriented robot better than by a product-oriented robot while in the case of task-oriented context, they evaluated the service provided by a product-oriented robot more positively than by a human-oriented robot. Implications for the design of human-robot interaction are discussed.

[13] The Effect of Robot Appearance Types and Task Types on Service Evaluation of a Robot HRI Pioneers -- Poster Session 2 / Choi, Jung Ju / Kwak, Sonya S. Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.223-224

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Summary: Robot's appearance types could be classified into two types: human-oriented and product-oriented. Human-oriented robot resembles human's appearance whereas product-oriented robot is an intelligent product that robotic technologies are integrated into existing product. In this study, we investigated the impact of two robot appearance types and two task types on service evaluation of a robot. We executed a 2 (robot appearance types: human-oriented vs. product-oriented) x 2 (robot task types: social context vs. task-oriented context) mixed-methods experiment design (N=48). In the case of social context, people evaluated the service provided by a human-oriented robot better than by a product-oriented robot while in the case of task-oriented context, they evaluated the service provided by a product-oriented robot more positively than by a human-oriented robot. Implications for the design of human-robot interaction are discussed.

[14] Low-Body-Part Detection using RGB-D camera Videos / Park, Jigwan / An, Kijin / Choi, JongSuk Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.273

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Summary: The reliable perception of a human in a dynamic environment is the most critical issue for interactive human-robot services. In human-robot interaction, a camera on a robot naturally captures the low-body-part of human because robots are usually shorter than the human. Conventionally, a two-dimensional laser range finder is used in low-body-part detection [1, 2]. However, these methods may cause errors when there are similar structures with legs. This video demonstrates a low-body-part detection scheme that not only exploits three-dimensional characteristics and but also the RGB features of the low-body-part. We build the low-body-part candidates by clustering from the legs to the heap. In the results, spurious candidates are eliminated by the proposed method.

[15] Intelligent Product Design Demonstrations -- Session 2 / Lee, Han Nwi / Namkoung, Yeseul / Kim, Jinhee / Lee, Seul / Jeong, Daun / Seo, Hyunji / Park, Soyeon / Lee, Kyeongah / Yang, Sunbin / Choi, Jimin / Kim, Yeeun / Choi, Jung Ju / Kwak, Sonya S. Extended Abstracts of the 2015 ACM/IEEE International Conference on Human-Robot Interaction 2015-03-02 v.2 p.301

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Summary: Robot's appearance types could be classified into human-oriented robot and product-oriented robot. Human-oriented robot resembles human's appearance and behavior whereas product-oriented robot is an intelligent product that is laden with robotic technologies based on the existing product [1]. In Kwak et al.'s study [1], customers categorized a human-oriented robot as a robot and a product-oriented robot as one of the existing product categories, and a product-oriented robot was more effective than a human-oriented robot for consumers' evaluation and purchase intention toward robots. On the basis of this, we developed several intelligent products including intelligent slippers, intelligent Christmas tree blocks, an intelligent piggy bank, an intelligent clothespin, an intelligent grass protection mat, and an intelligent frame (see Figure 1).

[16] Food talks back: exploring the role of mobile applications in reducing domestic food wastage Sustainability, food and electricity / Farr-Wharton, Geremy / Choi, Jaz Hee-Jeong / Foth, Marcus Proceedings of the 2014 Australian Computer-Human Interaction Conference 2014-12-02 p.352-361

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Summary: Mitigating domestic food waste reduces its environmental and economic impacts. In our study, we have identified the use of mobile technology to support behaviour change as a key tool to assist the process of reducing food waste. This paper reports on three mobile applications designed to reduce domestic food waste: Fridge Pal, LeftoverSwap and EatChaFood. The paper examines how each app can influence consumer knowledge of domestic food supply, location, and literacy. We discuss our findings with respect to three considerations: (i) assisting with the user's food supply and location knowledge; (ii) improving the user's food literacy; (iii) facilitating social food sharing of excess food. We present new insights for mobile interventions that encourage changes towards more sustainable behaviours to reduce food waste.

[17] Designing for grassroots food production: an event-based urban agriculture community Sustainability, food and electricity / Lyle, Peter / Choi, Jaz Hee-jeong / Foth, Marcus Proceedings of the 2014 Australian Computer-Human Interaction Conference 2014-12-02 p.362-365

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Summary: As urbanisation of the global population has increased above 50%, growing food in urban spaces increases in importance, as it can contribute to food security, reduce food miles, and improve people's physical and mental health. Approaching the task of growing food in urban environments is a mixture of residential growers and groups. Permablitz Brisbane is an event-centric grassroots community that organises daylong 'working bee' events, drawing on permaculture design principles in the planning and design process. Permablitz Brisbane provides a useful contrast from other location-centric forms of urban agriculture communities (such as city farms or community gardens), as their aim is to help encourage urban residents to grow their own food. We present findings and design implications from a qualitative study with members of this group, using ethnographic methods to engage with and understand how this group operates. Our findings describe four themes that include opportunities, difficulties, and considerations for the creation of interventions by Human-Computer Interaction (HCI) designers.

[18] Technicolouring the fridge: reducing food waste through uses of colour-coding and cameras / Farr-Wharton, Geremy / Choi, Jaz Hee-Jeong / Foth, Marcus Proceedings of the 2014 International Conference on Mobile and Ubiquitous Multimedia 2014-11-25 p.48-57

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Summary: Domestic food wastage is a growing problem for the environment and food security. Some causes of domestic food wastes are attributed to a consumer's behaviours during food purchasing, storage and consumption, such as: excessive food purchases and stockpiling in storage. Recent efforts in human-computer interaction research have examined ways of influencing consumer behaviour. The outcomes have led to a number of interventions that assist users with performing everyday tasks. The Internet Fridge is an example of such an intervention. However, new pioneering technologies frequently confront barriers that restrict their future impact in the market place, which has prompted investigations into the effectiveness of behaviour changing interventions used to encourage more sustainable practices. In this paper, we investigate and compare the effectiveness of two interventions that encourage behaviour change: FridgeCam and the Colour Code Project. We use FridgeCam to examine how improving a consumer's food supply knowledge can reduce food stockpiling. We use the Colour Code Project to examine how improving consumer awareness of food location can encourage consumption of forgotten foods. We explore opportunities to integrate these interventions into commercially available technologies, such as the Internet Fridge, to: (i) increase the technology's benefit and value to users, and (ii) promote reduced domestic food wastage. We conclude that interventions improving consumer food supply and location knowledge can promote behaviours that reduce domestic food waste over a longer term. The implications of this research present new opportunities for existing and future technologies to play a key role in reducing domestic food waste.

[19] Fast, Accurate, and Space-efficient Tracking of Time-weighted Frequent Items from Data Streams KM Session 13: Mining Data Streams / Lim, Yongsub / Choi, Jihoon / Kang, U. Proceedings of the 2014 ACM Conference on Information and Knowledge Management 2014-11-03 p.1109-1118

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Summary: How can we discover interesting patterns from time-evolving high speed data streams? How to analyze the data streams quickly and accurately, with little space overhead? High speed data stream has been receiving increasing attentions due to its wide applications such as sensors, network traffic, social networks, etc. One of the most fundamental tasks in the data stream is to find frequent items; especially, finding recently frequent items has become important in real world applications.
In this paper, we propose TwMinSwap, a fast, accurate, and space-efficient method for tracking recent frequent items. TwMinSwap is a deterministic version of our motivating algorithm TwSample which is a sampling based randomized algorithm with nice theoretical guarantees. TwMinSwap improves TwSample in terms of speed, accuracy, and memory usage. Both require only O(k) memory spaces, and do not require any prior knowledge on the stream such as its length and the number of distinct items in the stream. Through extensive experiments, we demonstrate that TwMinSwap outperforms all competitors in terms of accuracy and memory usage, with fast running time. Thanks to TwMinSwap, we report interesting discoveries in real world data streams, including the difference of trends between the winner and the loser of U.S. presidential candidates, and doubly-active patterns of movies.

[20] A Problem-Action Relation Extraction Based on Causality Patterns of Clinical Events in Discharge Summaries KM Track Posters / Seol, Jae-Wook / Jo, Seung-Hyeon / Yi, Wangjin / Choi, Jinwook / Lee, Kyung-Soon Proceedings of the 2014 ACM Conference on Information and Knowledge Management 2014-11-03 p.1971-1974

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Summary: Medical knowledge extraction has great potential to improve the treatment quality of hospitals. In this paper, we propose a clinical problem-action relation extraction method. It is based on clinical semantic units and event causality patterns in order to present a chronological view of a patient's problem and a physician's action. Based on our observation, a clinical semantic unit is defined as a conceptual medical knowledge for a problem and/or action. Since a clinical event is a basic concept of the problem-action relation, events are detected from clinical texts based on conditional random fields. A clinical semantic unit is segmented from a sentence based on time expressions and inherent structure of events. Then, a clinical semantic unit is classified into a problem and/or action relation based on event causality features in support vector machines. The experimental result on Korean medical collection shows 78.8% in F-measure when given the answer of clinical events. This result shows that the proposed method is effective for extracting clinical problem-action relations.

[21] Mobile maestro: enabling immersive multi-speaker audio applications on commodity mobile devices Mobile applications / Kim, Hyosu / Lee, SangJeong / Choi, Jung-Woo / Bae, Hwidong / Lee, Jiyeon / Song, Junehwa / Shin, Insik Proceedings of the 2014 International Joint Conference on Pervasive and Ubiquitous Computing 2014-09-13 v.1 p.277-288

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Summary: The goal of this work is to provide an abstraction of ideal sound environments to a new emerging class of Mobile Multi-speaker Audio (MMA) applications. Typically, it is challenging for MMA applications to implement advanced sound features (e.g., surround sound) accurately in mobile environments, especially due to unknown, irregular loudspeaker configurations. Towards an illusion that MMA applications run over specific loudspeaker configurations (i.e., speaker type, layout), this work proposes AMAC, a new Adaptive Mobile Audio Coordination system that senses the acoustic characteristics of mobile environments and controls individual loud-speakers adaptively and accurately. The prototype of AMAC implemented on commodity smartphones shows that it provides the coordination accuracy in sound arrival time in several tens of microseconds and reduces the variance in sound level substantially.

[22] Spatial hypertext modeling for dynamic contents authoring system based on transclusion Posters and demos / Choi, Ja-Ryoung / An, Sungeun / Lim, Soon-Bum Proceedings of the 2014 ACM Conference on Hypertext and Social Media 2014-09-01 p.303-304

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Summary: This paper proposed a web content collecting model to reuse a variety of web contents based on Transclusion. Transclusion is a model for collecting existing web contents and including them into a new document. However, Transclusion lacks consideration of copyright issues and dynamic changes. Therefore, we classified Transclusions into three different types based on copyright restrictions: Trans-quotation, Trans-reference and Trans-annotation. Then we represented Transclusions in each different type of spatial hypertext model. Also, we designed RVS (ReVerse Syndication) model in order to trace the dynamic changes.

[23] UX and Strategic Management: A Case Study of Smartphone (Apple vs. Samsung) and Search Engine (Google vs. Naver) Industry User Experience in Shopping and Business / Choi, Junho / Kim, Byung-Joon / Yoon, SuKyung HCIB 2014: 1st International Conference on HCI in Business 2014-06-22 p.703-710

Keywords: User experience design; Strategic management; VRIO framework; Apple; Samsung; Google; Naver

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Summary: This paper extends the analytic framework of user experience design into the area of strategic management by adopting the VRIO framework. We adopted value-rarity-imitability-organization (VRIO) framework and applied this integrated scheme into the investigating market cases. The first case study is the analysis of competitive advantages of two successful smartphone device makers, Apple (iPhone) and Samsung (Galaxy). UX Values (attractive design, ease of use, diverse applications), Rarity (simplicity, innovative interface, ecosystem), Imitability (patent, brand identity), and Organization (UX control tower, role of CXO) are employed to analyze and compare the strategies of those two most successful smartphone makers. In the second case study we compared the UX strategies of Google and Naver in the global and local levels. Through the case studies this paper shows a strong implication that UX can be extended into the corporate resources and capability, and VRIO framework utilized for the analysis of competitive advantages for the market leadership.

[24] The Gap between What a Service Provider Shows Off and What Users Really Watch Business, Sustainability and Technology Adoption / Kim, Dongjin / Choi, Jaehyun HCI International 2014: 16th International Conference on HCI, Part III: Applications and Services 2014-06-22 v.3 p.710-720

Keywords: watching behavior; IPTV; U + tv G; Google OS; log analysis

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Summary: We identified watching behaviors on the first IPTV established with Google OS in the world. Log analysis method was taken because actual usage behaviors could be understood. Log data that forty eight users used the IPTV service were collected by the application embedded in the IPTV. As a result of the log data analysis, the frequency of zapping channels by channel up & down button was more than that of changing channels by recommendation or searching. It was indicated that users did not access VOD contents by recommendation. However, a search was used to find YouTube contents.

[25] To What Extent System Usability Effects User Satisfaction: A Case Study of Smart Phone Features Analysis for Learning of Novice Design for the Mobile Experience / Shafiq, Muhammad / Iqbal, Muddesar / Choi, Jin-Ghoo / Rafi, Zeeshan / Ahmad, Maqbool / Ali, Wasif / Rasool, Saqib DUXU 2014: Third International Conference on Design, User Experience, and Usability, Part II: User Experience Design for Diverse Interaction Platforms and Environments 2014-06-22 v.2 p.346-357

Keywords: Task analysis; user survey; usability evaluation; UI; HCI

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Summary: Usability is a vital aspect of the machine interface. When users do not access the features of a machine, the features do not serve the design purpose. When a user confronts a different machine interface from his prior experiences, the learning process takes tremendous time and incurs cognitive stresses to the user. Smart phones, one of the most popular machines recently, share many common features regardless of vendors, but users find it very hard to switch them. It requires different clicks or touches to operate an application in one system and another. This paper focuses on evaluating the elements of smart phone systems, in terms of learnability and usability, such as Users, Tasks, Content, Context, Experience and Perception of users through survey. Then we conduct the task analysis for participants to evaluate the usability among users over the sampled smart phones of 3 latest brands. Our result shows that usability is a serious threat to the effectiveness of smart phones since 47% of the youth do not use smart phones at all, 31.5% of the users have accessibility threat for accessing its features and 45.5% of the users have usability threat. Overall just 23% of the users have fully adopted the features of smart phones.