Clustering by pattern similarity in large data sets

By Haixun Wang, Wei Wang, Jiong Yang, Philip S. Yu. ACM SIGMOD Conference, 2002

581 citations recorded by the source corpus.

Clustering is the process of grouping a set of objects into classes of similar objects. Although definitions of similarity vary from one clustering model to another, in most of these models the concept of similarity is based on distances, e.g., Euclidean distance or cosine distance. In other words, similar objects are required to have close values on at least a set of dimensions. In this paper, we explore a more general type of similarity. Under the pCluster model we proposed, two objects are similar if they exhibit a coherent pattern on a subset of dimensions. For instance, in DNA microarray analysis, the expression levels of two genes may rise and fall synchronously in response to a set of environmental stimuli. Although the magnitude of their expression levels may not be close, the patterns they exhibit can be very much alike. Discovery of such clusters of genes is essential in revealing significant connections in gene regulatory networks. E-commerce applications, such as collaborative filtering, can also benefit from the new model, which captures not only the closeness of values of certain leading indicators but also the closeness of (purchasing, browsing, etc.) patterns exhibited by the customers. Our paper introduces an effective algorithm to detect such clusters, and we perform tests on several real and synthetic data sets to show its effectiveness.

Subfields: Artificial Intelligence, Information Systems, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/0234b679d898f24e8113b5eb8ef50104a9dd21f8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

  1. Philip S. Yu
  2. Hong Cheng
  3. Jiawei Han
  4. Xifeng Yan
  5. Charu C. Aggarwal
  6. Dong Xin
  7. Sepp Hochreiter
  8. Teh Ying Wah

In Information Systems

  1. Philip S. Yu
  2. Hong Cheng
  3. Jiawei Han
  4. Xifeng Yan
  5. Dong Xin
  6. Donald C. Wunsch II
  7. Rui Xu
  8. Tak-Chung Fu

In Statistical and Nonlinear Physics

  1. Jiawei Han
  2. Philip S. Yu
  3. Tak-Chung Fu
  4. Rui Xu
  5. Donald C. Wunsch II
  6. Chin-Teng Lin
  7. Hong Cheng
  8. Mukesh Prasad

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