Zoom - please contact emilie_campanelli@fas.harvard.edu for more information
Title:
Distance-based summaries and modeling of evolutionary trees
Abstract:
Ranked tree shapes are mathematical objects of great importance used to model hierarchical data and evolutionary processes with applications ranging across many fields including evolutionary biology and infectious disease transmission. While...
Zoom - please contact emilie_campanelli@fas.harvard.edu for more information
Title:
Several structured thresholding bandit problem
Abstract:
In this talk we will discuss the thresholding bandit problem, i.e. a sequential learning setting where the learner samples sequentially K unknown distributions for T times, and aims at outputting at the end the set of distributions whose means\(\mu_k\) are above a threshold \(\tau\). We will study this problem under four structural assumptions, i.e. shape constraints: that the sequence of means is monotone, unimodal...
Zoom - please contact emilie_campanelli@fas.harvard.edu for more information
Title:
Non-exchangeable random partition models for microclustering
Abstract:
Many popular random partition models, such as the Chinese restaurant process and its two-parameter extension, fall in the class of exchangeable random partitions, and have found wide applicability in model-based clustering, population genetics, ecology or network analysis. While the exchangeability assumption is sensible in many cases, it has some strong implications. In particular, Kingman’s representation theorem implies that the size of the clusters...
Title:
Title:
Title: