Algorithms Seminar/Spring09

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Spring 2009: CS 7936: Clustering

Fri 10:45 - 12:05 | WEB 1460

Contents

Course Materials

Seminar format and grading

  • Student presentations on material selected by me. Please read, reflect upon, and follow these presentation guidelines
    • One week before presentation is scheduled: student meets with me to discuss content of the presentation
    • Day before presentation: student submits summary (either notes, or slides for presentation)
    • Day before presentation: non-presenters submit questions on the material
    • Day after presentation: questions are addressed by presenter or questioner (on the wiki talk page)

Participants

Schedule

Date Paper(s) Presenter
Clustering via proximity
Jan 16 Introduction to Clustering. Understanding different distance measures. Suresh
Jan 23 K-means: Lloyd's algorithm, worst-case behaviour, and an asymptotic analysis
Jan 30 Hierarchical Methods 1 2; (This chapter from the IR book) Parasaran
Clustering via (dis)similarity
Feb 6 Correlation clustering: the original paper, and an improved algorithm (only the clustering section). Also see Claire Mathieu's blog post
Feb 13 Spectral Clustering; Link on Wikipedia Nathan
Clustering as model building
Feb 20 EM, a two-round variant for Gaussians Piyush
Feb 27 Choosing k: the elbow method, the A,B,D information criteria, and an information-theoretic approach (how humans estimate k)
Mar 6 Information-theoretic clustering: IB, RIC Arvind
Large-Data clustering
Mar 13 BIRCH and CURE
Mar 27 Stream Clustering; Better Streaming Algorithms; Clustering Data Streams
Comparing Clusterings
Apr 3 Metrics on Clusterings Ruihong
Apr 10 Consensus Clustering : Cluster Ensembles, Approximations for Consensus Clustering?, Parasaran
Meta-clustering
Apr 17 Axioms of Clustering: Problems, and a working set
Apr 24 Cluster Stability; Sober look at Cluster Stability; Stability for Finite Samples
May 1 Clusterability and the efficency of clustering

Topics Not Covered

  • Clustering with differently shaped clusters (subspace/projective clustering)
  • methods for soft clustering
  • high and low dimensional approximation schemes for clustering problems.
  • manifold clustering

Paper Summaries

Past Semesters

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