{"id":1097,"date":"2019-12-12T12:58:52","date_gmt":"2019-12-12T12:58:52","guid":{"rendered":"http:\/\/kalogeratos.com\/psite\/?page_id=1097"},"modified":"2023-10-05T11:04:19","modified_gmt":"2023-10-05T11:04:19","slug":"ai-ml-for-network-modeling","status":"publish","type":"page","link":"https:\/\/kalogeratos.com\/psite\/ai-ml-for-network-modeling\/","title":{"rendered":"AI\/ML for network modeling"},"content":{"rendered":"<p style=\"text-align: justify;\">This is a intensive thematic module on aspects related to AI \/ ML and Networks. It is offered for multidisciplinary students of ENS Paris-Saclay to augment their scientific view over their disciplinary of origin (see <a href=\"https:\/\/ens-paris-saclay.fr\/formations\/autres-diplomes\/diplome-aria-recherche-en-intelligence-artificielle\">official page<\/a>).<\/p>\n<p style=\"text-align: justify;\">The descriptions below are in mixed French and English language.<\/p>\n<h2 style=\"text-align: justify;\">A. Syllabus of the overall program<\/h2>\n<p style=\"text-align: justify;\"><em>Motivations<\/em>. On rappelle ici que le parcours IA est centr\u00e9 autour de quatre p\u00f4les th\u00e9matiques\u00a0:<\/p>\n<ol style=\"text-align: justify;\">\n<li>la physique appliqu\u00e9e et les sciences de l\u2019ing\u00e9nieur,<\/li>\n<li>la biologie appliqu\u00e9e et les sciences biom\u00e9dicales,<\/li>\n<li>l\u2019\u00e9conom\u00e9trie, la sociom\u00e9trie et les sciences humaines et sociales.<\/li>\n<li>Les math\u00e9matiques et l\u2019informatique.<\/li>\n<\/ol>\n<p style=\"text-align: justify;\">Une des potentialit\u00e9s des m\u00e9thodes d\u2019IA porte sur l\u2019interpr\u00e9tation de donn\u00e9es complexes recueillies \u00e0 grande \u00e9chelle, les domaines scientifiques producteurs de donn\u00e9es sont donc des terrains naturels d\u2019exp\u00e9rimentation pour ces m\u00e9thodes. Les vis\u00e9es de l\u2019IA sont avant tout pr\u00e9dictives, il convient donc de comprendre les \u00e9tapes de la conception d\u2019une m\u00e9thodologie pr\u00e9dictive. A cette fin, le but du parcours est d\u2019aborder de mani\u00e8re \u00e0 la fois g\u00e9n\u00e9rale et contextualis\u00e9e les aspects suivants\u00a0:<\/p>\n<p style=\"text-align: justify;\">&#8211; m\u00e9trologie des ph\u00e9nom\u00e8nes \u00e9tudi\u00e9es,<\/p>\n<p style=\"text-align: justify;\">&#8211; mod\u00e9lisation et quantification des ph\u00e9nom\u00e8nes \u00e0 partir des donn\u00e9es,<\/p>\n<p style=\"text-align: justify;\">&#8211; \u00e9laboration et \u00e9valuation de mod\u00e8les pr\u00e9dictifs.<\/p>\n<p style=\"text-align: justify;\"><em>Enseignements.<\/em> Dans le cadre du parcours IA, on propose la mise en place de 5 modules de formation avec un module obligatoire centr\u00e9 sur les fondements de l\u2019IA (Module 1) et 4 modules \u00e9lectifs sp\u00e9cialis\u00e9s selon les structures de donn\u00e9es ou les probl\u00e9matiques propres \u00e0 certains domaines d\u2019applications (Modules 2-3-4-5-6). La liste des modules propos\u00e9s est la suivante\u00a0:<\/p>\n<p style=\"text-align: justify;\"><strong>Module 1 &#8211; Fondements de l\u2019Intelligence Artificielle et du Machine Learning<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Module 2 \u2013 IA&amp;ML pour la mod\u00e9lisation de s\u00e9ries temporelles et de signaux<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Module 3 &#8211; IA&amp;ML pour la mod\u00e9lisation des r\u00e9seaux<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Module 4 \u2013 IA&amp;ML pour le traitement d\u2019images et de la video<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Module 5 \u2013 IA&amp;ML pour la mod\u00e9lisation de s\u00e9quences de symboles et du texte<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Module 6 &#8211; IA&amp;ML pour la simulation de syst\u00e8mes<\/strong><\/p>\n<p style=\"text-align: justify;\">La pertinence naturelle des modules par champ disciplinaire est la suivante\u00a0:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Physique-SI \u00e0 Modules 1, 2, 4, (3, 6)<\/li>\n<li>Biologie \u00e0 Modules 1, 3, 4, (2, 5)<\/li>\n<li>SHS \u00e0 Modules 1, 2, 3, (4, 5)<\/li>\n<li>Maths-info-EEA \u00e0 Tous les modules<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Le format des cours\u00a0est le suivant\u00a0:<\/p>\n<ul style=\"text-align: justify;\">\n<li>5 cours magistraux ou conf\u00e9rences (5 s\u00e9ances de 2h, ou 4 cours de 2.5h)<\/li>\n<li>Projet num\u00e9rique centr\u00e9 sur le domaine disciplinaire en TP ou mentorat (\u00e9quivalent 20h).<\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><strong>B. Module 3: IA&amp;ML for network modeling<\/strong><\/h2>\n<p style=\"text-align: justify;\"><strong><em>Modeling of relational data.<\/em><\/strong><\/p>\n<h3 style=\"text-align: justify;\">Information generales<\/h3>\n<p style=\"text-align: justify;\"><strong>Responsable\u00a0: Argyris Kalogeratos &lt;kalogeratos@cmla.ens-cachan.fr&gt;<\/strong><\/p>\n<p style=\"text-align: justify;\"><em>Positionnement<\/em>\u00a0: Les donn\u00e9es relationnelles mod\u00e9lis\u00e9es par des graphes constituent une source extr\u00eamement riche pour rendre compte des dynamiques op\u00e9rant dans les ph\u00e9nom\u00e8nes sociaux ou \u00e9conomiques. Les processus de diffusion assimil\u00e9s \u00e0 des ph\u00e9nom\u00e8nes de contagion op\u00e9rant sur de telles structures de donn\u00e9es constituent un domaine d\u00e9j\u00e0 bien \u00e9tabli qui est celui de la mod\u00e9lisation \u00e9pid\u00e9miologique avec des applications notamment en sant\u00e9 publique mais aussi dans la s\u00e9curit\u00e9 informatique et l\u2019analyse des cascades d\u2019information dans les r\u00e9seaux sociaux. Cependant ces mod\u00e8les sont maintenant revisit\u00e9s pour r\u00e9pondre de mani\u00e8re plus fid\u00e8le aux enjeux de la prise de d\u00e9cision dans le monde r\u00e9el. La prise en compte d\u2019informations partielles ou incertaines, la n\u00e9cessit\u00e9 d\u2019agir vite que ce soit du fait d\u2019une \u00e9pid\u00e9mie meurtri\u00e8re (H1N1, Ebola\u2026) ou d\u2019une <em>fake news<\/em> et de distribuer efficacement les ressources de rem\u00e9diation soul\u00e8vent de nouvelles questions autour de ces mod\u00e8les. Les nouvelles approches dans la science des r\u00e9seaux se trouvent \u00e0 l\u2019intersection de la th\u00e9orie des graphes, des probabilit\u00e9s (processus stochastiques), de la physique statistique, de l\u2019inf\u00e9rence, de la th\u00e9orie du contr\u00f4le, de l\u2019alg\u00e8bre lin\u00e9aire et de l\u2019optimisation. Les moteurs de recommandation ont \u00e9galement motiv\u00e9 ces d\u00e9veloppements car le sujet du marketing peut \u00eatre vu \u00e9galement comme un probl\u00e8me de compl\u00e9tion de graphe biparti (il faut trouver le lien manquant entre un produit et un client). Le challenge Netflix lanc\u00e9 en 2006 a largement stimul\u00e9 les d\u00e9couvertes scientifiques dans ce domaine. Le module propose une introduction aux diverses probl\u00e9matiques abord\u00e9es sur les donn\u00e9es repr\u00e9sentant des r\u00e9seaux et les processus qui y op\u00e8rent. Les bases de la mod\u00e9lisation et de la quantification seront propos\u00e9es et un certain nombre de techniques et d\u2019algorithmes seront pr\u00e9sent\u00e9s sur quelques exemples.<\/p>\n<p style=\"text-align: justify;\"><em>Objectifs<\/em>\u00a0: appr\u00e9hender les formalismes existants pour la repr\u00e9sentation de graphes et de processus\/signaux sur des graphes, apprendre \u00e0 formaliser les probl\u00e8mes d\u2019apprentissage dans ce contexte, d\u00e9velopper les comp\u00e9tences pour la mise en \u0153uvre d\u2019une cha\u00eene compl\u00e8te de traitement de l\u2019information relationnelle pour un objectif de d\u00e9tection\/classification\/pr\u00e9diction, se familiariser avec les protocoles d\u2019\u00e9valuation pour de tels objectifs.<\/p>\n<p style=\"text-align: justify;\"><em>Th\u00e8mes abord\u00e9s<\/em>\u00a0: structures de r\u00e9seaux, caract\u00e9ristiques locales et globales des r\u00e9seaux, mod\u00e8les \u00e9pid\u00e9miologiques (SI, SIS, SIR\u2026), signaux sur graphe, notion d\u2019influence, d\u00e9tection de communaut\u00e9, pr\u00e9diction de lien\u2026<\/p>\n<p style=\"text-align: justify;\"><em>R\u00e9f\u00e9rences<\/em>\u00a0:<\/p>\n<p style=\"text-align: justify;\">A-L. Barab\u00e1si. Network Science. Cambridge University Press, 2016.<\/p>\n<p style=\"text-align: justify;\">M. Newman. Networks, Oxford University Press, 2018.<\/p>\n<p style=\"text-align: justify;\">E.D. Kolaczyk. Statistical Analysis of Network Data, Springer, 2009.<\/p>\n<h3 style=\"text-align: justify;\">Organization of the courses<\/h3>\n<p style=\"text-align: justify;\">The module is organized in 4 sessions of 2.5h duration each, as follows:<\/p>\n<div style=\"text-align: justify;\"><b>1. Introduction to Graph Theory\/Network Science [<a href=\"https:\/\/kalogeratos.com\/psite\/files\/MyCourses\/ML-Graphs-ParcoursAI\/ML-Networks-1-Intro.pdf\">slides<\/a>]\n<\/b><\/div>\n<div style=\"text-align: justify;\"><\/div>\n<div style=\"text-align: justify;\"><b>2. Network models &#8211; Static and dynamic graphs [<a href=\"https:\/\/www-complexnetworks.lip6.fr\/~tarissan\/iaml\/cours.pdf\">slides<\/a>][<a href=\"https:\/\/www-complexnetworks.lip6.fr\/~tarissan\/iaml.html\">lab material<\/a>]\n<\/b><\/div>\n<div style=\"text-align: justify;\"><\/div>\n<div style=\"text-align: justify;\">\n<div><b>3. Structure and topology inference [<a href=\"https:\/\/kalogeratos.com\/psite\/files\/MyCourses\/ML-Graphs-ParcoursAI\/ML-Networks-3-Structure.pdf\">slides<\/a>]<\/b><\/div>\n<div><\/div>\n<p><b>4. Processes and signals over graphs [<a href=\"https:\/\/kalogeratos.com\/psite\/files\/MyCourses\/ML-Graphs-ParcoursAI\/ML-Networks-4-Processes.pdf\">slides<\/a>]<\/b><\/p>\n<\/div>\n<div><\/div>\n<div style=\"text-align: justify;\">\n<h3>Acknowledgements<\/h3>\n<\/div>\n<p style=\"text-align: justify;\">I would like to thank Fabien Tarissan for handling the 2nd session of the module.<\/p>\n<div>\n<p>&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>This is a intensive thematic module on aspects related to AI \/ ML and Networks. It is offered for multidisciplinary students of ENS Paris-Saclay to augment their scientific view over their disciplinary of origin (see official page). The descriptions below are in mixed French and English language. A. Syllabus of the overall program Motivations. 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