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CLC number: TP391

On-line Access: 2015-12-07

Received: 2014-11-19

Revision Accepted: 2015-04-15

Crosschecked: 2015-11-11

Cited: 0

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Citations:  Bibtex RefMan EndNote GB/T7714


Omid Abbaszadeh


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Frontiers of Information Technology & Electronic Engineering  2015 Vol.16 No.12 P.1059-1068


An ensemble method for data stream classification in the presence of concept drift

Author(s):  Omid Abbaszadeh, Ali Amiri, Ali Reza Khanteymoori

Affiliation(s):  Department of Computer Engineering, University of Zanjan, Zanjan 45371-38791, Iran

Corresponding email(s):   o.abbaszadeh@znu.ac.ir, a_amiri@znu.ac.ir, khanteymoori@znu.ac.ir

Key Words:  Data stream, Classificaion, Ensemble classifiers, Concept drift

Omid Abbaszadeh, Ali Amiri, Ali Reza Khanteymoori. An ensemble method for data stream classification in the presence of concept drift[J]. Frontiers of Information Technology & Electronic Engineering, 2015, 16(12): 1059-1068.

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%A Ali Amiri
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A1 - Omid Abbaszadeh
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DOI - 10.1631/FITEE.1400398

One recent area of interest in computer science is data stream management and processing. By ‘data stream’, we refer to continuous and rapidly generated packages of data. Specific features of data streams are immense volume, high production rate, limited data processing time, and data concept drift; these features differentiate the data stream from standard types of data. An issue for the data stream is classification of input data. A novel ensemble classifier is proposed in this paper. The classifier uses base classifiers of two weighting functions under different data input conditions. In addition, a new method is used to determine drift, which emphasizes the precision of the algorithm. Another characteristic of the proposed method is removal of different numbers of the base classifiers based on their quality. Implementation of a weighting mechanism to the base classifiers at the decision-making stage is another advantage of the algorithm. This facilitates adaptability when drifts take place, which leads to classifiers with higher efficiency. Furthermore, the proposed method is tested on a set of standard data and the results confirm higher accuracy compared to available ensemble classifiers and single classifiers. In addition, in some cases the proposed classifier is faster and needs less storage space.

The paper discusses an interesting problem of data stream concept drifting. The paper uses ensemble models to handle continuous data streams, and a new weighting schema to drop outdated classifiers.


目的:数据流(data stream)管理和处理是计算机科学领域的热点问题。本文提及的“数据流”指连续且快速生成的数据包。数据流的专有特性有数据量极大、生成率高、处理时间有限和数据概念漂移(concept drift)等。这些特性将数据流区别于其他标准数据形式。数据流的一个重要问题即为输入数据分类。本文提出一种新型的整体分类器(ensemble classifier)。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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