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"Flexible and Robust Particle Tempering for State Space Models" by David Gunawan, Robert Kohn et al. - Vimarsana News

"Flexible and Robust Particle Tempering for State Space Models" by David Gunawan, Robert Kohn et al.

Density tempering (also called density annealing) is a sequential Monte Carlo approach to Bayesian inference for general state models which is an alternative to Markov chain Monte Carlo. When applied to state space models, it moves a collection of parameters and latent states (which are called particles) through a number of stages, with each stage having its own target distribution. The particles are initially generated from a distribution that is easy to sample from, e.g. the prior; the target at the final stage is the posterior distribution. Tempering is usually carried out either in batch m...

Source: uow.edu.au
"Diffusion Kernel Attention Network for Brain Disorder Classification" by Jianjia Zhang, Luping Zhou et al. - Vimarsana News

"Diffusion Kernel Attention Network for Brain Disorder Classification" by Jianjia Zhang, Luping Zhou et al.

Constructing and analyzing functional brain networks (FBN) has become a promising approach to brain disorder classification. However, the conventional successive construct-and-analyze process would limit the performance due to the lack of interactions and adaptivity among the subtasks in the process. Recently, Transformer has demonstrated remarkable performance in various tasks, attributing to its effective attention mechanism in modeling complex feature relationships. In this paper, for the first time, we develop Transformer for integrated FBN modeling, analysis and brain disorder classificat...

Source: uow.edu.au