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- Arik Azran
- ICML
- 2007

We consider the problem of multiclass classification where both labeled and unlabeled data points are given. We introduce and demonstrate a new approach for estimating a distribution over the missing labels where data points are viewed as nodes of a graph, and pairwise similarities are used to derive a transition probability matrix <i>P</i> for a Markov… (More)

- Arik Azran, Zoubin Ghahramani
- 2006 IEEE Computer Society Conference on Computer…
- 2006

Spectral clustering is a simple yet powerful method for finding structure in data using spectral properties of an associated pairwise similarity matrix. This paper provides new insights into how the method works and uses these to derive new algorithms which given the data alone automatically learn different plausible data partitionings. The main theoretical… (More)

- Arik Azran, Zoubin Ghahramani
- ICML
- 2006

We consider the problem of clustering in its most basic form where only a local metric on the data space is given. No parametric statistical model is assumed, and the number of clusters is learned from the data. We introduce, analyze and demonstrate a novel approach to clustering where data points are viewed as nodes of a graph, and pairwise similarities… (More)

- Arik Azran, Ron Meir
- COLT
- 2004

The hierarchical mixture of experts architecture provides a flexible procedure for implementing classification algorithms. The classification is obtained by a recursive soft partition of the feature space in a data-driven fashion. Such a procedure enables local classification where several experts are used, each of which is assigned with the task of… (More)

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