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Jorge Proença, Dirce Celorico, Carla Lopes, Miguel Sales Dias, Michael Tjalve, Andreas Stolcke, Sara Candeias, and Fernando Perdigão

To evaluate the reading performance of children, human assessment is usually involved, where a teacher or tutor has to take time to individually estimate the performance in terms of fluency (speed, accuracy and expression). Automatic estimation of reading ability can be an important alternative or complement to the usual methods, and can improve other applications such as elearning. Techniques must be developed to analyse audio recordings of read utterances by children and detect the deviations from the...

Publication details
Date: 1 July 2016
Type: Inproceeding
Publisher: ACL – Association for Computational Linguistics
Meghana Marathe, Jacki O’Neill, Paromita Pain, and William Thies

Helping citizens to resolve grievances is an important part of many e-governance initiatives. In this paper, we examine two contemporary initiatives that use ICTs to help citizens resolve grievances in central India. One system is a state-run call center (the CM Helpline), while the other is an independent citizen journalism service (CGNet Swara). Despite similarities in their high-level goals, approach, and geographies served, the systems have key differences in their use of technology, their level of...

Publication details
Date: 3 June 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Jacki O’Neill, Kentaro Toyama, Jay Chen, Berthel Tate, and Aysha Siddique

During the first decade of the 21 st century, the rise of mobile feature phones in India saw the development of both an economy of informal media exchange and a culture of active media sharing for entertainment. Mobile phone owners paid for pirated movies and music on the grey market, and they traded them with one another, even using poorly designed mechanisms such as Bluetooth file exchange.

In this paper, we update what is known about the dynamic mobile media sharing culture through qualitative...

Publication details
Date: 3 June 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Jina Suh, Jerry Zhu, and Saleema Amershi

Mixed-initiative classifier training, where the human teacher can choose which items to label or to label items chosen by the computer, has enjoyed empirical success but without a rigorous statistical learning theoretical justification. We analyze the label complexity of a simple mixed-initiative training mechanism using teaching dimension and active learning. We show that mixed-initiative training is advantageous compared to either computer-initiated (represented by active learning) or human-initiated...

Publication details
Date: 1 June 2016
Type: Inproceeding
John C. Tang, Gina Venolia, and Kori M. Inkpen

We conducted a mixed methods study of the use of the Meerkat and Periscope apps for live streaming video and audio broadcasts from a mobile device. We crowdsourced a task to describe the content, setting, and other characteristics of 767 live streams. We also interviewed 20 frequent streamers to explore their motivations and experiences. Together, the data provide a snapshot of early live streaming use practices. We found a diverse range of activities broadcast, which interviewees said were used to...

Publication details
Date: 7 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Leilani Battle, Danyel Fisher, Robert DeLine, Mike Barnett, Badrish Chandramouli, and Jonatahn Goldstein

As real-time monitoring and analysis become increasingly important, researchers and developers turn to data stream management systems (DSMS’s) for fast, efficient ways to pose temporal queries over their datasets. However, these systems are inherently complex, and even database experts find it difficult to understand the behavior of DSMS queries. To help analysts better understand these temporal queries, we developed StreamTrace, an interactive visualization tool that breaks down how a temporal query...

Publication details
Date: 7 May 2016
Type: Article
Publisher: ACM – Association for Computing Machinery
Syed Ishtiaque Ahmed, Nicola J Bidwell, Himanshu Zade, Srihari H Muralidhar, Anupama Dhareshwar, Baneen Karachiwala, Tandong Neba Cedrick, and Jacki O’Neill

This paper contributes to the growing literature on peer-to-peer (P2P) applications through an ethnographic study of auto-rickshaw drivers in Bengaluru, India. We describe how the adoption of a P2P application, Ola, which connects passengers to rickshaws, changes drivers work practices. Ola is part of the ‘peer services’ phenomenon which enable new types of ad-hoc trade in labour, skills and goods. Auto-rickshaw drivers present an interesting case because prior to Ola few had used Smartphones or the...

Publication details
Date: 7 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Marta E. Cecchinato, Abigail Sellen, Milad Shokouhi, and Gavin Smyth

Email is far from dead; in fact the volume of messages exchanged daily, the number of accounts per user, and the number of devices on which email is accessed have been constantly “Email growing. Most previous studies on email have focused on management and retrieval behaviour within a single account and on a single device. In this paper, we examine how people retrieve email in today’s ecosystem through an in-depth qualitative diary study with 16 participants. We found that personal and work accounts are...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Gerard Wilkinson, Ahmed Kharrufa, Jonathan Hook, Bradley Pursglove, Gavin Wood, Hendrik Haeuser, Nils Hammerla, Steve Hodges, and Patrick Olivier
Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Jaime Teevan, Shamsi Iqbal, Carrie J. Cai, Jeffrey P. Bigham, Michael S. Bernstein, and Elizabeth M. Gerber

It is difficult to accomplish meaningful goals with limited time and attentional resources. However, recent research has shown that concrete plans with actionable steps allow people to complete tasks better and faster. With advances in techniques that can decompose larger tasks into smaller units, we envision that a transformation from larger tasks to smaller microtasks will impact when and how people perform complex information work, enabling efficient and easy completion of tasks that currently seem...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Charles Kiene, Andrés Monroy-Hernández, and Benjamin Mako Hill

We present a qualitative analysis of interviews with participants in the NoSleep community within Reddit where millions of fans and writers of horror fiction congregate. We explore how the community handled a massive, sudden, and sustained increase in new members. Although existing theory and stories like Usenet's infamous "Eternal September" suggest that large influxes of newcomers can hurt online communities, our interviews suggest that NoSleep survived without major incident. We propose that three...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Sean Rintel, Richard Harper, and Kenton O'Hara

This paper reports on how asynchronous mobile video messaging presents users with a challenge to doing ‘being ordinary’. 53 participants from three countries were recruited to try Skype Qik at launch for two weeks. Some participants embraced Skype Qik as a gift economy, emphasizing a special relationship enacted through crafted self-presentation. However, gift exchange makes up only a small proportion of conversation. Many participants struggled with the self-presentation obligations of video when...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Cindy Hsin-Liu Kao, Paul Johns, Asta Roseway, and Mary Czerwinski

We present Tattio, a fabrication process that draws from current body decoration processes (i.e., jewelry like metallic temporary tattoos) for the creation of on skin technology. The fabrication process generates functional components such as NFC tags, circuitry, to Thermochromic tattoos, while maintaining the aesthetics and user experience of existing metallic temporary tattoos. The fabrication process is low cost, accessible and customizable; we seek to enable individuals to design, make, and wear...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: ACM CHI 2016
Halley Profit, Asta Roseway, and Mary Czerwinski

We explored the social comfort and user experience of wearable form factors as a portable option for Bright Light Therapy (BLT). BLT remains the predominant therapy for Seasonal Affective Disorder despite a non-compliance rate of ~70% commonly attributed to the inconvenience of prolonged daily sitting in front of light boxes. To date, attempts to address convenience using wearable/portable light treatment options have been met with limited success for nuanced reasons (i.e., stigma, efficacy, etc.). In...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: IEEE Pervasive Health
Justin Cranshaw, Andrés Monroy-Hernández, and S. A. Needham

In this work we present a mobile application we designed and engineered to enable people to log their travels near and far, leave notes behind, and build a community around spaces in between destinations. Our design explores new ground for location-based social computing systems, identifying opportunities where these systems can foster the growth of on-line communities rooted at non-places. In our work we develop, explore, and evaluate several innovative features designed around four usage...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Gloria Mark, Shamsi Iqbal, Mary Czerwinski, Paul Johns, and Akane Sano

In HCI research, attention has focused on understanding external influences on workplace multitasking. We explore instead how multitasking might be influenced by individual factors: personality, stress, and sleep. Forty information workers' online activity was tracked over two work weeks. The median duration of online screen focus was 40 seconds. The personality trait of Neuroticism was associated with shorter online focus duration and Impulsivity-Urgency was associated with longer online focus...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Gloria Mark, Shamsi Iqbal, Mary Czerwinski, Paul Johns, and Akane Sano

While email has been shown to be beneficial in the workplace, studies have reported that extensive email use can bring costs. In this study we investigate exactly how time spent on email might be related to perceived productivity and stress in the workplace. We conducted a mixed methods approach using computer logging, biosensors and daily surveys with 40 information workers in their in situ workplace environments for two workweeks. We found that the more time employees spent on email, the...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: ACM CHI 2016
Carrie J. Cai, Shamsi T. Iqbal, and Jaime Teevan

Microtasks are small units of work designed to be completed individually, eventually contributing to a larger goal. Although microtasks can be performed in isolation, in practice people often complete a chain of microtasks within a single session. Through a series of crowd-based studies, we look at how various microtasks can be chained together to improve efficiency and minimize mental demand, focusing on the writing domain. We find that participants completed low-complexity microtasks faster when they...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Gerard Wilkinson, Gavin Wood, Jonathan Hook, Tom Nappey, Ahmed Kharuffa, Bradley Pursglove, Hendrik Haeuser, Nils Hammerla, Steve Hodges, and Patrick Olivier

We present an interactivity demonstration of Expressy. A system that augments existing touchscreen devices with a variety of continuous expressive interaction capabilities, using movement data from a wrist-worn IMU. Our demonstration comprises a set of applications that show how the expressive touch interaction capabilities, offered by Expressy, can enable intuitive and meaningful interactions, in contexts including productivity, entertainment and lifestyle apps. This demo submission accompanies a full...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Gloria Mark, Shamsi T. Iqbal, Mary Czerwinski, Paul Johns, and Akane Sano

While email provides numerous benefits in the workplace, it is unclear how patterns of email use might affect key workplace indicators of productivity and stress. We investigate how three email use patterns: duration, interruption habit, and batching, relate to perceived workplace productivity and stress. We tracked email usage with computer logging, biosensors and daily surveys for 40 information workers in their in situ workplace environments for 12 workdays. We found that the longer daily...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Halley P Profita, Asta Roseway, and Mary Czerwinski

We explored the social acceptability and user experience of wearable form factors as a portable option for Bright Light Therapy (BLT). BLT remains the predominant therapy for Seasonal Affective Disorder despite a non-compliance rate of ~70% commonly attributed to the inconvenience of prolonged daily sitting in front of light boxes. To date, attempts to address convenience using wearable/portable light treatment options have been met with limited success for nuanced reasons (i.e., stigma, efficacy,...

Publication details
Date: 1 May 2016
Type: Proceedings
Publisher: Pervasive Health 2016
Meredith Ringel Morris, Annuska Perkins, Catherine Yao, Sina Bahram, Jeffrey P. Bigham, and Shaun K. Kane

Social media is an increasingly important part of modern life. We investigate the use of and usability of Twitter by blind users, via a combination of surveys of blind Twitter users, large-scale analysis of tweets from and Twitter profiles of blind and sighted users, and analysis of tweets containing embedded imagery. While Twitter has traditionally been thought of as the most accessible social media platform for blind users, Twitter’s increasing integration of image content and users’ diverse uses for...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Robin Brewer, Meredith Ringel Morris, and Anne Marie Piper

Diversifying participation in crowd work can benefit the worker and requester. Increasing numbers of older adults are online, but little is known about their awareness of or how they engage in mainstream crowd work. Through an online survey with 505 seniors, we found that most have never heard of crowd work but would be motivated to complete tasks by earning money or working on interesting or stimulating tasks. We follow up results from the survey with interviews and observations of 14 older adults...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Jaime Teevan, Shamsi T. Iqbal, and Curtis von Veh

This paper presents the MicroWriter, a system that decomposes the task of writing into three types of microtasks to produce a single report: 1) generating ideas, 2) labeling ideas to organize them, and 3) writing paragraphs given a few related ideas. Because each microtask can be completed individually with limited awareness of what has been already done and what others are doing, this decomposition can change the experience of collaborative writing. Prior work has used microtasking to support...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Jane Gruning and Siân Lindley

Sharing is an important facet of human relationships, yet there is a lack of research on how people share ownership of possessions. This paper reports on a study that investigates shared ownership of physical and digital possessions through interviews with couples and families in 13 households. We offer a more nuanced definition of shared ownership and show that certain practices, which are central to sharing physical objects, are not supported in the sharing of digital content. We suggest potential...

Publication details
Date: 1 May 2016
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
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