NDLI: KORS: Keyword-aware Optimal Route Search System

Content Provider	IEEE Xplore Digital Library
Author	Xin Cao Lisi Chen Gao Cong Jihong Guan Nhan-Tue Phan Xiaokui Xiao
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci. & Technol., Tongji Univ., Shanghai, China (Jihong Guan) \|\| Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore, Singapore (Xin Cao; Lisi Chen; Gao Cong; Nhan-Tue Phan; Xiaokui Xiao)
Abstract	We present the Keyword-aware Optimal Route Search System (KORS), which efficiently answers the KOR queries. A KOR query is to find a route such that it covers a set of user-specified keywords, a specified budget constraint is satisfied, and an objective score of the route is optimized. Consider a tourist who wants to spend a day exploring a city. The user may issue the following KOR query: “find the most popular route such that it passes by shopping mall, restaurant, and pub, and the travel time to and from her hotel is within 4 hours.” KORS provides browser-based interfaces for desktop and laptop computers and provides a client application for mobile devices as well. The interfaces and the client enable users to formulate queries and view the query results on a map. Queries are then sent to the server for processing by the HTTP post operation. Since answering a KOR query is NP-hard, we devise two approximation algorithms with provable performance bounds and one greedy algorithm to process the KOR queries in our KORS prototype. We use two real-world datasets to demonstrate the functionality and performance of this system.
Sponsorship	IEEE Comput. Soc.
Starting Page	1340
Ending Page	1343
File Size	502846
Page Count	4
File Format	PDF
ISBN	9781467349093
ISSN	10636382
e-ISBN	9781467349109
e-ISBN	9781467349086
DOI	10.1109/ICDE.2013.6544939
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-08
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Computers Roads Mobile handsets Greedy algorithms Google Browsers
Content Type	Text

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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
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