NDLI: SmartSource: A Mobile Q&A Middleware Powered by Crowdsourcing

Content Provider	IEEE Xplore Digital Library
Author	Ye Zhao Chen-Chih Liao Ting-Yi Lin Jikai Yin Ngoc Do Cheng-Hsin Hsu Venkatasubramanian, N.
Copyright Year	2015
Description	Author affiliation: Dept. of Comput. Sci., Univ. of California Irvine, Irvine, CA, USA (Jikai Yin; Venkatasubramanian, N.) \|\| Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan (Chen-Chih Liao; Ting-Yi Lin; Cheng-Hsin Hsu) \|\| Google Inc., Mountain View, CA, USA (Ye Zhao) \|\| Arista Networks, Santa Clara, CA, USA (Ngoc Do)
Abstract	In this paper, we introduce Smart Source, a crowd sourcing based mobile Question & Answer (Q&A) system that aims to provide mobile information seekers with timely, trustworthy and accurate answers while ensuring that information providers are not inappropriately burdened. We tackle this challenge by taking advantage of both static and dynamic context and semantics from mobile users (e.g., Geolocation, social network, expertise/interest, device sensor profiles, battery level) to identify sources of information (i.e., Workers) that are trusted by the user and accurate enough for the questions at hand. Given a question, the Smart Source broker middleware executes a scalable and efficient worker selection algorithm that uses a Lyapunov optimization framework to maximize the utility of worker selection while guaranteeing the stability of the overall system. An associated assignor selection is used to scale the selection process to a large number of users. We implement the Smart Source prototype system on an Android test bed and thoroughly evaluate the system using real world applications and data, in particular those that involve geospatial questions and answers. Evaluation results indicate that Smart Source is efficient and provides superior worker selection compared to baseline approaches. Smart Source is also highly customizable: it employs a general utility function and provides a control knob to tradeoff the optimality and responding time. We believe that Smart Source will pave a way for new mechanisms of interaction among mobile users.
Starting Page	145
Ending Page	156
File Size	683589
Page Count	12
File Format	PDF
e-ISBN	9781479999729
DOI	10.1109/MDM.2015.73
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mobile communication Middleware Smart phones Crowdsourcing Context Mobile computing Algorithm design and analysis performance optimization Q&A systems middleware mobile computing crowdsourcing crowdsensing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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