no code implementations • 8 Feb 2024 • Alejandro de la Concha, Nicolas Vayatis, Argyris Kalogeratos
This paper addresses the multiple two-sample test problem in a graph-structured setting, which is a common scenario in fields such as Spatial Statistics and Neuroscience.
no code implementations • 3 Nov 2023 • Alejandro de la Concha, Nicolas Vayatis, Argyris Kalogeratos
Quantifying the difference between two probability density functions, $p$ and $q$, using available data, is a fundamental problem in Statistics and Machine Learning.
no code implementations • 8 Jan 2023 • Alejandro de la Concha, Argyris Kalogeratos, Nicolas Vayatis
Consider each node of a graph to be generating a data stream that is synchronized and observed at near real-time.
no code implementations • 28 May 2022 • Alejandro de la Concha, Nicolas Vayatis, Argyris Kalogeratos
In this paper, we introduce the first -to the best of our knowledge-graph-based extension of this problem, which reads as follows: Suppose each node $v$ of a fixed graph has access to observations coming from two unknown node-specific pdfs, $p_v$ and $q_v$, and the goal is to estimate for each node the likelihood-ratio between both pdfs by also taking into account the information provided by the graph structure.
no code implementations • 20 Oct 2021 • Alejandro de la Concha, Argyris Kalogeratos, Nicolas Vayatis
Consider a heterogeneous data stream being generated by the nodes of a graph.
1 code implementation • 7 Jul 2021 • Antoine de Mathelin, Mounir Atiq, Guillaume Richard, Alejandro de la Concha, Mouad Yachouti, François Deheeger, Mathilde Mougeot, Nicolas Vayatis
In this paper, we introduce the ADAPT library, an open source Python API providing the implementation of the main transfer learning and domain adaptation methods.
1 code implementation • 18 Jun 2020 • Alejandro de la Concha, Nicolas Vayatis, Argyris Kalogeratos
This paper addresses the problem of segmenting a stream of graph signals: we aim to detect changes in the mean of a multivariate signal defined over the nodes of a known graph.