Publication statistics

Pub. period:2005-2011
Pub. count:10
Number of co-authors:16


Number of publications with 3 favourite co-authors:

Anupam Jain:
Deepti Chittamuru:
Edward D. Lazowska:



Productive colleagues

Tapan S. Parikh's 3 most productive colleagues in number of publications:

Scott R. Klemmer:38
Kentaro Toyama:22
Nitendra Rajput:18

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Tapan S. Parikh


Publications by Tapan S. Parikh (bibliography)

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Patel, Neil, Klemmer, Scott R. and Parikh, Tapan S. (2011): An asymmetric communications platform for knowledge sharing with low-end mobile phones. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 87-88.

We present Awaaz.De ("give voice"), a social platform for communities to access and share knowledge using low-end mobile phones. Awaaz.De features a configurable mobile voice application organized into asynchronous voice mes-sage boards. For poor, remote and marginal communities, the voice-touchtone interface addresses the constraints of low literacy, language diversity, and affordability of only basic mobile devices. Voice content also presents a low barrier to content authoring, encouraging otherwise disconnected communities to actively participate in knowledge exchange. Awaaz.De includes a web-based administration interface for Internet-connected community managers to moderate, annotate, categorize, route, and narrow-cast voice messages. In this paper we describe the platform's design, implementation, and future directions.

© All rights reserved Patel et al. and/or ACM Press

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Patel, Neil, Chittamuru, Deepti, Jain, Anupam, Dave, Paresh and Parikh, Tapan S. (2010): Avaaj Otalo: a field study of an interactive voice forum for small farmers in rural India. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 733-742.

In this paper we present the results of a field study of Avaaj Otalo (literally, "voice stoop"), an interactive voice application for small-scale farmers in Gujarat, India. Through usage data and interviews, we describe how 51 farmers used the system over a seven month pilot deployment. The most popular feature of Avaaj Otalo was a forum for asking questions and browsing others' questions and responses on a range of agricultural topics. The forum developed into a lively social space with the emergence of norms, persistent moderation, and a desire for both structured interaction with institutionally sanctioned authorities and open discussion with peers. For all 51 users this was the first experience participating in an online community of any sort. In terms of usability, simple menu-based navigation was readily learned, with users preferring numeric input over speech. We conclude by discussing implications of our findings for designing voice-based social media serving rural communities in India and elsewhere.

© All rights reserved Patel et al. and/or their publisher

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Kumar, Neha and Parikh, Tapan S. (2010): New media and folk music in rural India. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3529-3534.

This paper presents the results of a preliminary ethnographic study of folk music practices in rural Malwa, Madhya Pradesh (India), specifically on the impact of new media on the production and dissemination of this music. Our findings show that new media can lead to increased listening and appreciation of folk music, but that better mechanisms are required for remunerating and recognizing folk artists themselves.

© All rights reserved Kumar and Parikh and/or their publisher

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Chen, Kuang, Hellerstein, Joseph M. and Parikh, Tapan S. (2010): Designing adaptive feedback for improving data entry accuracy. In: Proceedings of the 2010 ACM Symposium on User Interface Software and Technology 2010. pp. 239-248.

Data quality is critical for many information-intensive applications. One of the best opportunities to improve data quality is during entry. Usher provides a theoretical, data-driven foundation for improving data quality during entry. Based on prior data, Usher learns a probabilistic model of the dependencies between form questions and values. Using this information, Usher maximizes information gain. By asking the most unpredictable questions first, Usher is better able to predict answers for the remaining questions. In this paper, we use Usher's predictive ability to design a number of intelligent user interface adaptations that improve data entry accuracy and efficiency. Based on an underlying cognitive model of data entry, we apply these modifications before, during and after committing an answer. We evaluated these mechanisms with professional data entry clerks working with real patient data from six clinics in rural Uganda. The results show that our adaptations have the potential to reduce error (by up to 78%), with limited effect on entry time (varying between -14% and +6%). We believe this approach has wide applicability for improving the quality and availability of data, which is increasingly important for decision-making and resource allocation.

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Patel, Neil, Agarwal, Sheetal, Rajput, Nitendra, Nanavati, Amit, Dave, Paresh and Parikh, Tapan S. (2009): A comparative study of speech and dialed input voice interfaces in rural India. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 51-54.

In this paper we present a study comparing speech and dialed input voice user interfaces for farmers in Gujarat, India. We ran a controlled, between-subjects experiment with 45 participants. We found that the task completion rates were significantly higher with dialed input, particularly for subjects under age 30 and those with less than an eighth grade education. Additionally, participants using dialed input demonstrated a significantly greater performance improvement from the first to final task, and reported less difficulty providing input to the system.

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Parikh, Tapan S. (2009): Engineering rural development. In Communications of the ACM, 52 (1) pp. 54-63.

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Parikh, Tapan S., Javid, Paul, K., A Sasikumar, Ghosh, Kaushik and Toyama, Kentaro (2006): Mobile phones and paper documents: evaluating a new approach for capturing microfinance data in rural India. In: Proceedings of ACM CHI 2006 Conference on Human Factors in Computing Systems 2006. pp. 551-560.

CAM is a user interface toolkit that allows a camera-equipped mobile phone to interact with paper documents. It is designed to automate inefficient, paper-intensive information processes in the developing world. In this paper we present a usability evaluation of an application built using CAM for collecting data from microfinance groups in rural India. This application serves an important and immediate need in the microfinance industry. Our quantitative results show that the user interface is efficient, accurate and can quickly be learned by rural users. The results were competitive with an equivalent PC-based UI. Qualitatively, the interface was found easy to use by almost all users. This shows that, with a properly designed user interface, mobile phones can be a preferred platform for many rural computing applications. Voice feedback and numeric data entry were particularly well-received by users. We are conducting a pilot of this application with 400 microfinance groups in India.

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Parikh, Tapan S. and Ghosh, Kaushik (2006): Understanding and Designing for Intermediated Information Tasks in India. In IEEE Pervasive Computing, 5 (2) pp. 32-39.

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Parikh, Tapan S. and Lazowska, Edward D. (2006): Designing an architecture for delivering mobile information services to the rural developing world. In: Proceedings of the 2006 International Conference on the World Wide Web 2006. pp. 791-800.

Implementing successful rural computing applications requires addressing a number of significant challenges. Recent advances in mobile phone computing capabilities make this device a likely candidate to address the client hardware constraints. Long battery life, wireless connectivity, solid-state memory, low price and immediate utility all make it better suited to rural conditions than a PC. However, current mobile software platforms are not as appropriate. Web-based mobile applications are hard to use, do not take advantage of the mobile phone's media capabilities and require an online connection. Custom mobile applications are difficult to develop and distribute. To address these limitations we present CAM -- a new framework for developing and deploying mobile computing applications in the rural developing world. CAM applications are accessed by capturing barcodes using the mobile phone camera, or entering numeric strings with the keypad. Supporting minimal navigation, direct linkage to paper practices and offline multi-media interaction, CAM is uniquely adapted to rural device, user and infrastructure constraints. To illustrate the breadth of the framework, we list a number of CAM-based applications that we have implemented or are planning. These include processing microfinance loans, facilitating rural supply chains, documenting grassroots innovation and accessing electronic medical histories.

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Parikh, Tapan S. (2005): CAM: A Mobile Paper-Based Information Services Architecture for Remote Rural Areas in the Developing World. In: VL-HCC 2005 - IEEE Symposium on Visual Languages and Human-Centric Computing 21-24 September, 2005, Dallas, TX, USA. pp. 341-342.

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