Search Results for author: Mario Beraha

Found 6 papers, 2 papers with code

Improved prediction of future user activity in online A/B testing

no code implementations5 Feb 2024 Lorenzo Masoero, Mario Beraha, Thomas Richardson, Stefano Favaro

In online randomized experiments or A/B tests, accurate predictions of participant inclusion rates are of paramount importance.

A Nonparametric Bayes Approach to Online Activity Prediction

no code implementations26 Jan 2024 Mario Beraha, Lorenzo Masoero, Stefano Favaro, Thomas S. Richardson

We derive closed-form expressions for the number of new users expected in a given period, and a simple Monte Carlo algorithm targeting the posterior distribution of the number of days needed to attain a desired number of users; the latter is important for experimental planning.

Activity Prediction

Frequency and cardinality recovery from sketched data: a novel approach bridging Bayesian and frequentist views

no code implementations27 Sep 2023 Mario Beraha, Stefano Favaro, Matteo Sesia

We study how to recover the frequency of a symbol in a large discrete data set, using only a compressed representation, or sketch, of those data obtained via random hashing.

Projected Statistical Methods for Distributional Data on the Real Line with the Wasserstein Metric

1 code implementation22 Jan 2021 Matteo Pegoraro, Mario Beraha

As a byproduct of our approach, we are also able to derive faster routines for previous work on PCA for distributions.

regression

Spatially dependent mixture models via the Logistic Multivariate CAR prior

no code implementations29 Jul 2020 Mario Beraha, Matteo Pegoraro, Riccardo Peli, Alessandra Guglielmi

We consider the problem of spatially dependent areal data, where for each area independent observations are available, and propose to model the density of each area through a finite mixture of Gaussian distributions.

Methodology Applications

Feature Selection via Mutual Information: New Theoretical Insights

1 code implementation17 Jul 2019 Mario Beraha, Alberto Maria Metelli, Matteo Papini, Andrea Tirinzoni, Marcello Restelli

Mutual information has been successfully adopted in filter feature-selection methods to assess both the relevancy of a subset of features in predicting the target variable and the redundancy with respect to other variables.

feature selection regression

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