NDLI: Representing uncertain time on space-time cube for bus movement

Content Provider	IEEE Xplore Digital Library
Author	Trung Vinh Tran Phuoc Vinh Tran Tha Thi Bui
Copyright Year	2013
Description	Author affiliation: Univ. of Technol., Ho Chi Minh City, Vietnam (Trung Vinh Tran; Phuoc Vinh Tran; Tha Thi Bui)
Abstract	The movement of a city bus is represented visually on a space-time cube by a space-time path connecting mathematical points associating the particular locations of bus stops with the times the bus visits them. In reality, most buses do not visit stops to drop down and pick up passengers on regulation time, thus the points indicating their visiting times on the time axis of a space-time cube may be fuzzified according to the fuzzy set theory. In this article, a fuzzy-time cube which is a space-time cube having the fuzzified time axis is studied to represent the movement of buses. On a fuzzy-time cube, a regulation visiting-time point $t_{i}$ is fuzzified to a pair $(T_{i},$ $m_{i}).$ A process of estimating the fuzzy set $(T_{i},$ $m_{i})$ is proposed to indicate times on the fuzzified time axis of a fuzzy-time cube. With the method dividing $T_{i}$ into time units $T_{i}^{j},$ the membership function is estimated as a step function. The membership grade of each point on the one-day time axis at a bus stop is estimated by the statistical method based on the data recorded from a 30-day surveying. The representation of the bus movement on a fuzzy-time cube enables passengers to take buses more effectively and bus managers rank drivers as well as calculate the benefit of each route.
Starting Page	353
Ending Page	357
File Size	535254
Page Count	5
File Format	PDF
ISBN	9781479905690
e-ISBN	9781479905720
DOI	10.1109/ICCAIS.2013.6720581
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-25
Publisher Place	Vietnam
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fuzzy sets Data visualization Color Cities and towns Educational institutions Trajectory Joining processes
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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