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Clustering: Large Databases in data mining

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ZHAO Sam
ZHAO Sam

This chapter describes the application of clustering algorithms to large database.

Technology
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Chapter 12 Clustering: Large Databases Written by Farial Shahnaz Presented by Zhao Xinyou Data Mining Technology
Contents ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Introduction –Common method ,[object Object],[object Object],[object Object],PP133  huge, huge number  millions Time/ Memory Data
Motivation—Clustering for large database f(x): O(n*n). f(x): O(n). Time/ Memory Data Time/ Memory Data Method ??? PP134
Requirement—Clustering for large database ,[object Object],[object Object],[object Object],f(x): O(n*n). f(x): O(n). Time/ Memory Data Time/ Memory Data Method ??? PP134 ,[object Object],[object Object],[object Object],[object Object]
Major approach for scalable clustering ,[object Object],[object Object],[object Object],PP135
Divide-and Conquer approach ,[object Object],[object Object],[object Object],[object Object],[object Object],PP135 Key Assumptions 1.Problem solutions can be constructed using subproblem solutions. 2.Subproblem solutions are independent of one another. 9*9 数独
Parallel clustering approach ,[object Object],PP136-137
Explanation about Divide-and-Conquer Divide is some algorithms Conquer is some algorithms
Application ,[object Object],[object Object],[object Object],[object Object],[object Object],PP135
CURE- Divide-and-Conquer ,[object Object],[object Object],[object Object],[object Object],PP140-141
Heap PP140-141
k-D Tree ,[object Object],PP140-141 3-dimensional k d-tree
K-D Tree PP140-141
CURE- Divide-and-Conquer PP140-141 Nearest Merge Nearest Merge
Incremental clustering approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],PP135-136
Application--Incremental clustering approach ,[object Object],[object Object],[object Object],[object Object]
BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies ) ,[object Object],[object Object],[object Object],PP137-138
BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies ) ,[object Object],PP137-138
Related Definiation ,[object Object],[object Object]
Related Definiation ,[object Object],[object Object],[object Object],[object Object]
Algorithm for BIRCH
DBSCAN ,[object Object],[object Object],[object Object],[object Object]
Definition for DBSCAN ,[object Object],[object Object],[object Object],[object Object]
Definition for DBSCAN ,[object Object],[object Object],[object Object],[object Object]
Definition for DBSCAN ,[object Object],[object Object]
Definition for DBSCAN ,[object Object],[object Object]
Algorithm of DBSCAN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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