IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2010-03-05 09:30
An Efficient Indexing for Slightly Disordered Time-series Sensor Data
Takahiro Yamazaki, Takeru Inoue, Hiroshi Sato (NTT), Junichiro Takagi, Masateru Minami (The Univ. of Tokyo), Noriyuki Takahashi (NTT) IN2009-184
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, an evolution of a sensor and network technology grows possibility of sensing the real world conditions which are changing from moment to moment. In the future, number of sensor nodes will increase and the sensor nodes will make more and more time-series sensor data. For the time-series sensor data, it is required that we can detect the specific change pattern of the time-series data in real time and we can store fast the time-series data for reusing past data. Detecting the specific change pattern requires exactly ordered time-series data, but in fact, there is a problem that the time-series sensor data can be slightly disordered with latency of sink nodes or network. For storing the time-series sensor data, a problem is lack of data reusability due to storing filtered data. So, we propose a new indexing method for real-time searching and storing slightly disordered time-series sensor data which are not filtered. The proposed algorithm achieves fast storing the slightly disordered time-series sensor data by using a new data structure “Offset bitmap” to extend an existing indexing method “Sparse index”. In this paper, we show advantage of our method by comparative experiment with our method and an existing method.
Keyword (in Japanese) (See Japanese page) 
(in English) database / indexing / data structure / sensor network / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 449, IN2009-184, pp. 241-246, March 2010.
Paper # IN2009-184 
Date of Issue 2010-02-25 (IN) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF IN2009-184

Conference Information
Committee NS IN  
Conference Date 2010-03-04 - 2010-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Phoenix Seagaia Resort (Miyazaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, NS+IN workshop (March 4-5) 
Paper Information
Registration To IN 
Conference Code 2010-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Efficient Indexing for Slightly Disordered Time-series Sensor Data 
Sub Title (in English)  
Keyword(1) database  
Keyword(2) indexing  
Keyword(3) data structure  
Keyword(4) sensor network  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takahiro Yamazaki  
1st Author's Affiliation NTT Network Innovation Laboratories (NTT)
2nd Author's Name Takeru Inoue  
2nd Author's Affiliation NTT Network Innovation Laboratories (NTT)
3rd Author's Name Hiroshi Sato  
3rd Author's Affiliation NTT Network Innovation Laboratories (NTT)
4th Author's Name Junichiro Takagi  
4th Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
5th Author's Name Masateru Minami  
5th Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
6th Author's Name Noriyuki Takahashi  
6th Author's Affiliation NTT Network Innovation Laboratories (NTT)
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Speaker Author-1 
Date Time 2010-03-05 09:30:00 
Presentation Time 20 minutes 
Registration for IN 
Paper # IN2009-184 
Volume (vol) vol.109 
Number (no) no.449 
Page pp.241-246 
#Pages
Date of Issue 2010-02-25 (IN) 


[Return to Top Page]

[Return to IEICE Web Page]


The Institute of Electronics, Information and Communication Engineers (IEICE), Japan