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FIL Talk – Mars, 2

2 mars 2023 à 15 h 00 min - 16 h 00 min

We have a pleasure to invite you to the FIL seminar.

When: Mars 2, 15:00 – 16:00.
Where: Campus de la Doua (details TBA)

Name of BBB room: FIL-seminaires
PSW: FILNouveauxArrivants
Talk by: Alessandro Renzaglia (CITI)
Title: Combining Stochastic Optimization and Frontiers for Aerial Multi-Robot Exploration of 3D Terrains
Keywords: Multi-robot systems, autonomous exploration, distributed systems
In this talk, I will present a novel path planning algorithm for the autonomous exploration of 3D environments with a fleet of cooperating aerial vehicles. The proposed decentralized approach, which alternates derivative-free stochastic optimization and a frontier-based algorithm, allows each robot to generate its trajectory based on the collected data and the local map built by integrating the information shared by its teammates. Whenever the system reaches a local optimum, which corresponds to a location surrounded by already explored areas, the algorithm identifies the closest frontier to get over it and restarts the local optimization. Its low computational cost and the capability to deal with constraints and decentralized decision-making make it particularly suitable for multi-robot applications in complex 3D environments. Simulation results show that this approach can generate feasible trajectories driving multiple robots to explore realistic environments. Furthermore, in terms of exploration time, this algorithm significantly outperforms a standard solution based on closest frontier points while providing similar performances compared to a computationally more expensive centralized greedy solution. A short discussion on future directions and open questions will conclude this talk.

Speaker bio:

Alessandro Renzaglia is a researcher (CR) at Inria Lyon and a member of the Chroma team in the CITI lab. He received his M.S. degree in Physics from the University of Rome “La Sapienza” (Italy) in 2007 and his Ph.D. degree in Computer Science from the University of Grenoble (France) in 2012. In the following years, he has been a Postdoctoral Researcher with the Computer Science & Engineer Department at the University of Minnesota, Minneapolis (USA), and later in the Laboratory for Analysis and Architecture of Systems (LAAS), Toulouse (France). Since 2017, he has joined the Inria Chroma team. His research interests include multi-robot systems, path planning, and aerial robotics.
Talk by: Genoveva Vargas-Solar (LIRIS)
Title: Towards Disaggregated executions of Data Science Pipelines on Just In Time Architectures
Keywords: Disaggregated Data Centers, Data Science Pipelines, Edge Computing
This talk will describe the open issues and possible solutions for executing data science (DS) pipelines supported by data processing, transmission and sharing across several resources executing greedy processes. Current data science pipelines environments provide various infrastructure services with computing resources such as general-purpose processors (GPP), Graphics Processing Units (GPUs), Field Programmable Gate Arrays (FPGAs) and Tensor Processing Unit (TPU) coupled with platform and software services to design, run and maintain DS pipelines. These one-fits-all solutions impose the complete externalization of data pipeline tasks. However, some tasks can be executed in the edge, and the backend can provide just in time resources to ensure ad-hoc and elastic execution environments.
I will introduce an innovative composable « Just in Time Architecture » for configuring DCs for Data Science Pipelines (JITA-4DS) and associated resource management techniques. JITA-4DS is a cross-layer management system that is aware of both the application characteristics and the underlying infrastructures to break the barriers between applications, middleware/operating system, and hardware layers. Vertical integration of these layers is needed for building a customizable Virtual Data Center (VDC) to meet the dynamically changing data science pipelines’ requirements such as performance, availability, and energy consumption. Accordingly, I will show the results of an experimental simulation devoted to run data science workloads and determine the best strategies for scheduling the allocation of resources implemented by JITA-4DS.
Speaker bio:
Genoveva Vargas-Solar ( is a principal scientist of the French Council of Scientific Research (CNRS) and a member of the DataBase group of Laboratory on Informatics on Image and Information Systems (LIRIS). She is a regular member of the Mexican Academia of Computing(AMEXCOMP). In 2014 she obtained her Habilitation à Diriger des Recherches (HDR – tenure) from Univ. of Grenoble. In 2000. She obtained her first PhD degree in Computer Science at Univ. Joseph Fourier and in 2005 her second PhD degree in Literature at Univ. Stendhal. She has obtained  two Master Degrees (1997, 1998) in Computer Science at Univ. Joseph Fourier and in Compared Literature at Univ. Stendhal. She did her undergraduate studies on Computer Systems Engineering at Universidad de las Américas in Puebla, Mexico.
She contributes to the construction of service-based database/data science management systems. The objective is to design data science workflows, new queries, and enactment services guided by Service Level Objectives (SLO). She proposes query evaluation methodologies, algorithms, and tools for composing, deploying, and executing data science functions on just in time architectures (disaggregated data centres). She conducts fundamental and applied research activities for addressing these challenges on different architectures ARM, raspberry, cluster, cloud, and HPC. Her research interests in Literature concern middle age Literature, myths’ critics and myths’ analysis applied to different myths of origins. She has coordinated several research projects in Europe and Latin America financed by governments and industrial partners. She promotes gender equality and diversity and inclusion (DnI) actions. She is a member of the gender equality committee at LIRIS and she represents EDBT in the inter-conference group DnI databases. She leads the SINFONIA and JOWDISAI projects on women’s work in AI and DS. She actively promotes the scientific cooperation in Computer Science between Latin America and Europe particularly between France and Mexico and Brazil.


Date :
2 mars 2023
Heure :
15 h 00 min - 16 h 00 min