no code implementations • 30 Sep 2024 • Anderson Chaves, Eduardo Ogasawara, Patrick Valduriez, Fabio Porto
Predictive queries over spatiotemporal (ST) stream data pose significant data processing and analysis challenges.
no code implementations • 30 Sep 2024 • Ji Liu, Jiaxiang Ren, Ruoming Jin, Zijie Zhang, Yang Zhou, Patrick Valduriez, Dejing Dou
First, we propose a fisher information-based method to adaptively sample data within each device to improve the effectiveness of the FL fine-tuning process.
no code implementations • 18 Dec 2023 • Ji Liu, Tianshi Che, Yang Zhou, Ruoming Jin, Huaiyu Dai, Dejing Dou, Patrick Valduriez
First, we propose an asynchronous FL system model with an efficient model aggregation method for improving the FL convergence.
1 code implementation • 14 Jul 2022 • Ji Liu, daxiang dong, Xi Wang, An Qin, Xingjian Li, Patrick Valduriez, Dejing Dou, dianhai yu
Although more layers and more parameters generally improve the accuracy of the models, such big models generally have high computational complexity and require big memory, which exceed the capacity of small devices for inference and incurs long training time.
no code implementations • 29 Apr 2022 • Daniel Rosendo, Alexandru Costan, Patrick Valduriez, Gabriel Antoniu
Today, to balance various trade-offs, ML-based analytics tends to increasingly leverage an interconnected ecosystem that allows complex applications to be executed on hybrid infrastructures where IoT Edge devices are interconnected to Cloud/HPC systems in what is called the Computing Continuum, the Digital Continuum, or the Transcontinuum. Enabling learning-based analytics on such complex infrastructures is challenging.
no code implementations • 4 Aug 2021 • Daniel Rosendo, Alexandru Costan, Gabriel Antoniu, Matthieu Simonin, Jean-Christophe Lombardo, Alexis Joly, Patrick Valduriez
We propose a methodology to support the optimization of real-life applications on the Edge-to-Cloud Continuum.
no code implementations • 5 Feb 2021 • Rafael S. Pereira, Alexis Joly, Patrick Valduriez, Fabio Porto
However, this traditional approach is not useful for identifying classes unseen on the training set, known as the open set problem.
no code implementations • 30 Sep 2020 • Renan Souza, Leonardo G. Azevedo, Vítor Lourenço, Elton Soares, Raphael Thiago, Rafael Brandão, Daniel Civitarese, Emilio Vital Brazil, Marcio Moreno, Patrick Valduriez, Marta Mattoso, Renato Cerqueira, Marco A. S. Netto
We contribute with (i) characterization of the lifecycle and taxonomy for data analyses; (ii) design principles to build this view, with a W3C PROV compliant data representation and a reference system architecture; and (iii) lessons learned after an evaluation in an Oil & Gas case using an HPC cluster with 393 nodes and 946 GPUs.
no code implementations • 9 Oct 2019 • Renan Souza, Leonardo Azevedo, Vítor Lourenço, Elton Soares, Raphael Thiago, Rafael Brandão, Daniel Civitarese, Emilio Vital Brazil, Marcio Moreno, Patrick Valduriez, Marta Mattoso, Renato Cerqueira, Marco A. S. Netto
To handle this problem, in this paper we contribute with a detailed characterization of provenance data in the ML lifecycle in CSE; a new provenance data representation, called PROV-ML, built on top of W3C PROV and ML Schema; and extensions to a system that tracks provenance from multiple workflows to address the characteristics of ML and CSE, and to allow for provenance queries with a standard vocabulary.
no code implementations • 8 May 2018 • Ji Liu, Noel Moreno Lemus, Esther Pacitti, Fabio Porto, Patrick Valduriez
We consider big spatial data, which is typically produced in scientific areas such as geological or seismic interpretation.