- rodrigo.ribeiro@impatech.edu.br
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preprint Caio Alves, Rodrigo Ribeiro. "Exponential Bounds and Analyticity for the Tree Builder Random Walk ." 19, 2026.
In this work we investigate a class of random walks that interacts with its environment called Tree Builder Random Walk (TBRW). In our settings, at each step, the walker adds a random number of...
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published Pamela Harris, Rodrigo Ribeiro, Mei Yin. "Probabilistic (m, n)-Parking Functions." The Electronic Journal of Combinatorics. 32 (4) 2025.
<jats:p>In this article, we establish new results on the probabilistic parking model (introduced by Durmić, Han, Harris, Ribeiro, and Yin) with $m$ cars and $n$ parking spots and probability...
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published Janos Engländer, Giulio Iacobelli, Gábor Pete, Rodrigo Ribeiro. "Structural results for the tree builder random walk." The Annals of Applied Probability. 35 (2) 2025.
We study the Tree Builder Random Walk: a randomly growing tree, built by a walker as she is walking around the tree. Namely, at each time $n$, she adds a leaf to her current vertex with probability...
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preprint Rodrigo Ribeiro. "A Martingale Approach to Large-$θ$ Ewens-Pitman Model." 2025.
We investigate the asymptotic behavior of the number of parts $K_n$ in the Ewens--Pitman partition model under the regime where the diversity parameter is scaled linearly with the sample size, that...
talks: past
April 1, 2023
Posts
Writing the TBRW R package
In developing the R package `tbrw` for simulating the Tree Builder Random Walk (TBRW), my initial use of the graph management library `igraph` quickly revealed severe efficiency limitations for...
Simulating the Tree Builder Random Walk in R with tbrw
The tbrw R package enables easy simulation and visualization of the Tree Builder Random Walk (TBRW), a stochastic process where a walker dynamically expands a tree by adding new vertices at each...