How Many Clusters? Which Clustering Method? Answers Via Model-Based Cluster Analysis

@article{Fraley1998HowMC,
  title={How Many Clusters? Which Clustering Method? Answers Via Model-Based Cluster Analysis},
  author={Chris Fraley and Adrian E. Raftery},
  journal={Comput. J.},
  year={1998},
  volume={41},
  pages={578-588}
}
We consider the problem of determining the structure of clustered data, without prior knowledge of the number of clusters or any other information about their composition. Data are represented by a mixture model in which each component corresponds to a different cluster. Models with varying geometric properties are obtained through Gaussian components with different parametrizations and cross-cluster constraints. Noise and outliers can be modelled by adding a Poisson process component… 

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