Search Results for author: Giacomo Aletti

Found 3 papers, 0 papers with code

Generalized Rescaled Polya urn and its statistical applications

no code implementations13 Oct 2020 Giacomo Aletti, Irene Crimaldi

We apply the proposed test to a data set of Twitter posts about COVID-19 pandemic: in a few words, for a classical chi-squared test the data result strongly significant for the rejection of the null hypothesis (the daily long-run sentiment rate remains constant), but, taking into account the correlation among data, the introduced test leads to a different conclusion.

Statistics Theory Probability Applications Methodology Statistics Theory 60F05, 60F15, 62F03 (Primary) 62F05, 62L20 (Secondary)

Analytical confidence intervals for the number of different objects in data streams

no code implementations25 Sep 2019 Giacomo Aletti

This paper develops a new mathematical-statistical approach to analyze a class of Flajolet-Martin algorithms (FMa), and provides analytical confidence intervals for the number F0 of distinct elements in a stream, based on Chernoff bounds.

Generation of discrete random variables in scalable frameworks

no code implementations21 Nov 2016 Giacomo Aletti

In this paper, we face the problem of simulating discrete random variables with general and varying distributions in a scalable framework, where fully parallelizable operations should be preferred.

Discrete Choice Models

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