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Stream data mining & CluStream framework

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Yueshen Xu
Yueshen Xu

This document summarizes a framework for clustering evolving data streams. The framework uses micro-clusters to represent subsets of data points and clusters micro-clusters into macro-clusters over different time horizons. Micro-clusters are represented by cluster feature vectors (CFVs) and are updated when new data points arrive by joining, deleting, or merging micro-clusters. Macro-clusters are formed by applying a modified k-means algorithm that clusters micro-clusters represented by their CFVs over different time periods.

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A Framework for Clustering Evolving Data Streams Yueshen Xu Zhejiang Univ CCNT, Middleware Middle ware, CCNT, ZJU 11/05/11
S tream P rocessing  E vent S tream P rocessing  C omplex E vent P rocessing 11/05/11 Middleware, CCNT, ZJU D ata S tream M ining E vent S tream P rocessing C omplex E vent P rocessing In-memory Computing Real –time Computing Big data Computing Mode Real Application SAP… Taobao Yahoo:S4 Baidu Brown&MIT We are endeavoring!
The paper itself ,[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU Watson UIUC THU UIC ,[object Object],Expert Pundit Expert Pundit !
Data Stream & Streaming Data ,[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU ,[object Object]
Principles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU ,[object Object],[object Object],Ordered, Countable, Enumerable, Infinite, no-storage Data Model Vital!
The Framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU The principle of approximate results ,[object Object],[object Object],[object Object],Is it sophistic?
C luster F eature V ector ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Why are they opted for? 11/05/11 Middleware, CCNT, ZJU ,[object Object],[object Object],[object Object],Not come up by Prof. Han et al
Pyramidal Time Frame(1) ,[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU ,[object Object],Worse Case~~
Pyramidal Time Frame(2) ,[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU Best case No redundancy ,[object Object],[object Object],[object Object],[object Object],[object Object]
Micro-Cluster(1) ------Procedure 11/05/11 Middleware, CCNT, ZJU t h h’ Micro cluster(CFV) Snapshots T
Micro-Cluster(2) ------Initialization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU Supported by the experiment Reasonable ?
Micro-Cluster(3) ------Updating ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU
Macro-Cluster(1) ------Find the approximate time stamp ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU Not user-friendly
Macro-Cluster(2) ------modified k-means ,[object Object],[object Object],[object Object],[object Object],[object Object],11/05/11 Middleware, CCNT, ZJU
[object Object],11/05/11 Middleware, CCNT, ZJU Stream Stream Stream Stream Stream Stream Stream Stream

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Stream data mining & CluStream framework

  • 1. A Framework for Clustering Evolving Data Streams Yueshen Xu Zhejiang Univ CCNT, Middleware Middle ware, CCNT, ZJU 11/05/11
  • 2. S tream P rocessing  E vent S tream P rocessing  C omplex E vent P rocessing 11/05/11 Middleware, CCNT, ZJU D ata S tream M ining E vent S tream P rocessing C omplex E vent P rocessing In-memory Computing Real –time Computing Big data Computing Mode Real Application SAP… Taobao Yahoo:S4 Baidu Brown&MIT We are endeavoring!
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  • 10. Micro-Cluster(1) ------Procedure 11/05/11 Middleware, CCNT, ZJU t h h’ Micro cluster(CFV) Snapshots T
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