NDLI: CDR-To-MoVis: Developing a Mobility Visualization System from CDR data

Content Provider	IEEE Xplore Digital Library
Author	Dash, M. Kee Kiat Koo Decraene, J. Ghim-Eng Yap Wei Wu Gomes, J.B. Shi-Nash, A. Xiaoli Li
Copyright Year	2015
Description	Author affiliation: Inst. for Infocomm Res., A*Star, Singapore, Singapore (Dash, M.; Kee Kiat Koo; Ghim-Eng Yap; Wei Wu; Gomes, J.B.; Xiaoli Li) \|\| R&D Labs., Singapore Telecommun. Ltd., Singapore, Singapore (Decraene, J.; Shi-Nash, A.)
Abstract	CDR (Call Detail Records) data is more easily available than other network related data (such as GPS data) as most telecommunications service providers (TSPs) maintain such data. By analyzing it one can find mobility patterns of most of the population thus leading to efficient urban planning, disease and traffic control, etc. But its granularity is low as the latitude and longitude (lat-lon) of a cell tower is used as the current location of all mobile phones that are connected to the cell tower at that time. Granularity can range between 10s of metres to several kms depending on population density of a locality. This is one reason why, although there are many existing systems on visualizing mobility of people based on GPS data, there is hardly any existing system for CDR. We develop a Mobility Visualization System (MoVis) for visualizing mobility of people from their CDR records. First of all, given the CDR records of a user, we determine her stay regions (places where she stays for a significant amount of time). Trajectories of phone events (and lat-lon of cell towers) between stay regions are extracted as her trips. Start and end times of a trip are estimated using linear extrapolation. Based on the start and end times, temporal patterns are extracted. Trips with sufficient number of intermediate points are mapped to transport network that consists of train lines, bus routes and expressways. We use Kernel density estimation to visualize the most common path for a given origin and destination. Based on this we create a round-the-clock visualization of mobility of people over the entire city separately for weekdays and weekends. At the end we show the validation results.
Starting Page	1452
Ending Page	1455
File Size	4241180
Page Count	4
File Format	PDF
ISBN	9781479979646
DOI	10.1109/ICDE.2015.7113399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-04-13
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Poles and towers Computer architecture Data visualization Microprocessors Trajectory Sociology Statistics
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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