Calendar

PhD Seminars V


January 13, 2020

Talk 1

Speaker

Siddarth Pritam (DataShape)

Title

Topological data analysis (A brief introduction)

Abstract

Topological Data Analysis (TDA) is a recent and fast growing field providing a set of new topological and geometric tools to infer relevant features (shape related) for possibly complex data. This talk will be a brief introduction, through a few selected topics (Topology, Simplicial complex, Persistent Homology... ), to basic fundamental and practical aspects of TDA for non experts.

Talk 2

Speaker

Julien Wintz (SED)

Title

Mutualised Development Actions - The Gnomon case

Abstract

The Gnomon project focuses on the acquisition, by a living organism such as a plant, of a shape in space over time. Experimental techniques over the last two decades suggest how the interactions of molecular actors within cells (such as genes) and the physical signals perceived by them contribute to the growth of this organism: aka - morphogenesis.

However, the exponentially growing size of this new data is a problem. The aim of this project is to extract a commensurable and relevant sub-set of data in order to qualify and predict morphogenesis.

This titanic mass of data contains geometric, biological and physical information. Also their treatment is a highly multidisciplinary activity.

The developed algorithms thus combine conceptual models, used to identify general principles of self-organization, with realistic numerical simulations, to test hypotheses.

In this context, experimental biologists systematically confront these algorithms with real quantitative data.

Based on a modular hybrid plug-in (cross language) architecture whose kernel and visualization layer are implemented in C ++ then wrapped in python allowing team members to specialize concepts algorithmic more or less abstract in python and dynamically. By embedding an interpreter and syntactic and semantic tools, Gnomon is a dynamic and autonomous integrated modeling and simulation platform.

This presentation will focus on the scientific, organizational and technical aspects of the development of this software platform by the center's experimentation and development department.

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