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  "Title": "Parsimonious Ultrametric Gaussian Mixture Models",
  "Description": "Parsimonious Ultrametric Gaussian Mixture Models via\ngrouped coordinate ascent (equivalent to EM) algorithm\ncharacterized by the inspection of hierarchical relationships\namong variables via parsimonious extended ultrametric\ncovariance structures. The methodologies are described in\nCavicchia, Vichi, Zaccaria (2024)\n<doi:10.1007/s11222-024-10405-9>, (2022)\n<doi:10.1007/s11634-021-00488-x> and (2020)\n<doi:10.1007/s11634-020-00400-z>.",
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