1-st Call for Participation – SimpleText Track @ CLEF-2022

Date : 2022-04-22

Context
The web and social media have democratized information sharing and have become the main source of information for citizens, risking users to rely on shallow information in sources prioritizing commercial or political incentives rather than the correctness and informational value. Non-experts tend to avoid scientific literature due to its complex language, internal vernacular, or their lack of prior background knowledge. Text simplification approaches hold the promise to remove some of these barriers. The SimpleText track is a part of the CLEF initiative which promotes the systematic evaluation of information access systems, primarily through experimentation on shared tasks. SimpleText addresses the challenges of text simplification approaches in the context of promoting scientific information access, by providing appropriate data and benchmarks. The track uses a corpus of scientific literature abstracts and popular science requests. It features three tasks.

Tasks
We invite you to submit both automatic and manual runs! Manual intervention should be reported.

* Task 1: What is in (or out)? Select passages to include in a simplified summary, given a query.

* Task 2: What is unclear? Given a passage and a query, rank terms/concepts that are required to be explained for understanding this passage (definitions, context, applications,..).

* Task 3: Rewrite this! Given a query, simplify passages from scientific abstracts.

* In addition, we welcome any other type of submission that uses our data as an open task.

How to participate
In order to participate, you should sign up at the CLEF website (https://clef2022-labs-registration.dei.unipd.it/). All team members should join the SimpleText mailing list (https://groups.google.com/g/simpletext). The data will be made available to all registered participants.

Deadlines

*Data release: February 2022

*Final guidelines: March 2022

*Run submission: 22 April 2022

*Results available: 6 May 2022

*Draft paper submission: 27 May 2022

*Camera-ready: 1 July 2022

*CLEF conference: 5-8 September 2022

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Journée d’étude Mots/Machines #4: Simplification et adaptation du texte

Date : 2022-04-22
Lieu : Université de Bretagne Occidentale

20, rue Duquesne – CS9383729238

Brest Cedex 3, France

La simplification de textes est utilisée dans les domaines de la traduction,la localisation et la rédaction technique. La pré-édition consiste à préparer un document avant d’appliquer la traduction automatique afin d’obtenir de meilleurs résultats et de réduire la charge de travail de post-édition. C’est devenu un choix courant pour les entreprises publiant leur contenu dans différentes langues.

En outre, la simplification du texte améliore les applications de traitement automatique de la langue naturelle, notamment les résultats de la traduction automatique. Ainsi, la simplification automatique de textes pourrait s’avérer utile dans divers domaines tels que la communication scientifique, le journalisme scientifique, la politique et l’éducation, tant pour les cours de sciences que pour la didactique. La vulgarisation scientifique et le journalisme scientifique sont d’ailleurs l’un des plus anciens programmes de l’UNESCO.

Les textes simplifiés sont également plus accessibles aux locuteurs non natifs, aux jeunes lecteurs, aux personnes souffrant d’un handicap de lecture ou ayant un niveau d’éducation inférieur (objectif de développement durable INÉGALITÉ RÉDUITE).

Les textes scientifiques, tels que les publications de recherche, peuvent être difficiles à comprendre pour les non-experts du domaine ou les scientifiques qui ne sont pas concernés par la publication. L’amélioration de la compréhensibilité des textes et leur adaptation à différents publics restent un problème non résolu. La simplification de textes est un pas en avant vers la recherche réellement ouverte, accessible et compréhensible par tous, le développement d’un contre-discours aux fake news basées sur des résultats scientifiques, la possibilité s de lire plus rapidement et par conséquent, de devenir mieux informé.e sur les résultats scientifiques, notamment avec l’explosion de la science ouverte depuis le début de la pandémie actuelle de COVID-19 (objectif de développement durable ÉDUCATION DE QUALITÉ).

L’objectif de cette journée d’étude est de fournir une plateforme de communication à une communauté interdisciplinaire de chercheurs en traduction, rédaction technique, traitement du langage naturel, recherche d’information, linguistique, didactique, journalisme scientifique et vulgarisation scientifique.

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Discovery Science 2022

Date : 2022-04-22
Lieu : Montpellier, France

The 25th International Conference on Discovery Science (DS 2022)

https://ds2022.sciencesconf.org/

Montpellier, France, October, 10-12, 2022

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COVID-19
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We hope that by October the world will have returned to normality and we can welcome you in Montpellier. However, in case the COVID-19 risk persists and traveling is difficult, DS 2022 will take place either as a mixed event by offering both remote and on site presentation options or as a fully online event in the worst case. The accepted papers will still be published by Springer and the special issue will proceed as announced. In these challenging times that the whole of humanity is going through, we hope that all of you are safe and remain healthy.

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::: Scope :::
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The 25th International Conference on Discovery Science (DS 2022) provides an open forum for
intensive discussions and exchange of new ideas among researchers working in the area of Discovery Science. The scope of the conference includes the development and analysis of methods for discovering scientific knowledge, coming from machine learning, data mining, intelligent data analysis, big data analysis as well as their application in various scientific domains.

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::: Submission Topics :::
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We invite submissions of research papers addressing all aspects of discovery science: papers that focus on the analysis of different types of massive and complex data, including structured, spatio-temporal and network data. We would also like to encourage contributions from the areas of computational scientific discovery, mining scientific data, computational creativity and discovery informatics.
We particularly welcome papers addressing applications from different domains of science including biomedicine and life sciences, astronomy, physics, chemistry, as well as social sciences. Applications to massive, heterogeneous, continuous or imprecise data sets are of particular interests. Possible topics include, but are not limited to:

Knowledge discovery, machine learning and statistical methods
Ubiquitous Knowledge Discovery
Data Streams, Evolving Data and Models
Change Detection and Model Maintenance
Active Knowledge Discovery
Information extraction from scientific literature
Knowledge discovery from heterogeneous, unstructured and multimedia data
Data and knowledge visualization
Planning to Learn
Knowledge Transfer
Computational Creativity
Human-machine interaction for knowledge discovery and management
Evaluation of models and predictions in discovery setting
Causality modelling
AutoML, meta-learning, planning to learn
Explainable AI, interpretability of machine learning and deep learning models
Learning from complex data
Graphs, networks, linked and relational data
Spatial, temporal and spatiotemporal data
Unstructured data, including textual and web data
Multimedia data
AI frameworks for discovery in scientific domains
Biomedical knowledge discovery, analysis of (multi)omics, micro-array, gene deletion, gene set enrichment data
Machine Learning for High-Performance Computing, Grid and Cloud Computing
Applications of the above techniques in scientific domains, such as
Physical sciences (e.g., materials sciences, particle physics)
Life sciences (e.g., systems biology/systems medicine)
Environmental sciences
Life Sciences
Natural and social sciences

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::: Publishing :::
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Traditionally the proceedings of DS series appear in the Lecture Notes in Artificial Intelligence Series by Springer-Verlag. In addition, authors of best papers will be invited to submit their extended versions to a special issue on Discovery Science of the Machine Learning journal published by Springer. Fast Track Processing will be used to have them reviewed and published.

***********************************
::: IMPORTANT DATES :::
***********************************
Abstract submission: May 23, 2022
Full paper submission: May 30, 2022
Notification: July 20, 2022
Camera ready version, author registration: August 8, 2022
Conference: October 10-12, 2022

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::: Submission guidelines :::
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Regular research papers may contain up to fifteen (15) pages and must be formatted according to the layout supplied by Springer-Verlag for the Lecture Notes in Computer Science series. The Program Committee reserves the right to offer acceptance as Short Papers (10 pages in the Proceedings) to some submissions. The reviews are single-blind. You do not need to anonymize your submission.
Submitted papers may not have appeared in or be under consideration for another workshop, conference or a journal, nor may they be under review or submitted to another forum during the DS 2022 review process.
We encourage all authors to include their individual ORCID in their address information.
Authors can submit their regular papers via our submission page through Easychair:

https://easychair.org/my/login_author?sum=073323801fd3b7125c2b6cc57ecf0a6f;conference=267691

Authors of accepted papers must submit along with the final version of their paper a consent to publish, filled and signed. Authors of accepted papers are expected to register to the conference and present their work (see author registration date).

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Special issue and Best Student Paper Award
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The authors of a number of selected papers presented at DS 2022 will be invited to submit extended versions of their papers for possible inclusion in a special issue of Machine Learning journal (published by Springer) on Discovery Science. Fast-track processing will be used to have them reviewed and published.
There will be an award for the Best Student Paper in the value of 555 Euro sponsored by Springer.

Dino Ienco (PC Co-Chairs DS)
Pascal Poncelet (PC Co-Chairs DS)
Sašo Džeroski (General Chair DS)

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Apprentissage profond sur données synthétiques appliqué à l’imagerie radar

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : ONERA / UTT
Durée : 3 ans
Contact : alexandre.baussard@utt.fr
Date limite de publication : 2022-05-02

Contexte :
voir fichier attaché

Sujet :
voir fichier attaché

Profil du candidat :
voir fichier attaché

Formation et compétences requises :
voir fichier attaché

Adresse d’emploi :
ONERA et Université de Technologie de Troyes

Document attaché : 202202171418_phy-demr-2022-11.pdf

PhD in Computer Sciences / Computational Social Sciences

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : LPI/CRI-Paris, Université Paris Cité
Durée : 3 ans
Contact : pedro.ramaciottimorales@learningplanetinstitute.org
Date limite de publication : 2022-03-12

Contexte :
The Learning Planet Institute (LPI) is an interdisciplinary research unit of Université Paris Cité, developing diverse projects in themes ranging from systems biology to network sciences and complex systems. In the heart of Paris, the LPI brings together social scientists, biologists, designers, computer scientists, mathematicians and physicists among other disciplines, to develop research seeking high societal impact.

Sujet :
This position is part of an initiative to investigate the challenges wrought on democracies by the Internet and Artificial Intelligence, and to improve the understanding of the impact they have in society. The goal of the initiative is to improve the understanding and interpretability of AI systems that mediate social public life in social networks, media platforms, and online news outlets. How do Recommender Systems perceive and model the digital landscape of users and contents to recommend us friends and information? What is the relation between algorithmic recommendations mediating the activity in large internet platforms and the social phenomena such as echo chambers and polarization? This initiative relies on mathematical modeling, political science survey data, and computational experiments with Recommender Systems to develop actionable theories of machine social cognition and tool kits to analyze models learned and leveraged by AI architectures.

Profil du candidat :
The hired doctoral researcher will conduct data analyses of social and media platform data and theoretical modelization work. It is also expected that the doctoral researcher will conduct experiments, training models, and develop software tools to further the understanding of AI systems and their social cognition.

We encourage students with a background in natural sciences and technology (e.g., engineering, computer science, mathematics, physics) to apply for the position. Applicants with different backgrounds and strong modeling and computing skills are also encouraged to apply.

Formation et compétences requises :
Experience with Machine Learning in Python.
Interest in learning big data technologies.
Interest in doing research in AI interpretability.
Experience/interest in working in research in mathematical modeling (geometrical modeling of learning space for Deep Learning).
Interest in working with interdisciplinary teams in a public policy-inspired environment.

Adresse d’emploi :
CRI-Paris
8 bis Rue Charles V, 75004 Paris

Document attaché : 202202170855_Fiche de poste doctoral student LPI.pdf

PhD in Computational Social Sciences

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : médialab, Sciences Po
Durée : 3 ans
Contact : pedro.ramaciottimorales@sciencespo.fr
Date limite de publication : 2022-03-12

Contexte :
The médialab at Sciences Po is hiring a doctoral researcher to work on the impact of artificial intelligence on socio-political and media dynamics for project “AI-Political Machines”

Sujet :
This position is part of the project AIPM (AI-Political Machines), funded by the McCourt Institute, devoted to conducting research tackling the challenges of the Internet, Artificial Intelligence, and their impact in society. The goal of AIPM is to improve the understanding of how AI systems perceive large social, political, and informational online systems, and the implications are for algorithmic mediation and the impact on social phenomena. Most AI systems mediating digital ecosystem (generating friend and content recommendations, filtering content, and assisting online searches) are trained using digital traces: networks of friends in social platforms (social graphs), content consumption (clicks, views, shares, retweets, etc.), in addition to text and images, to name a few. The goal of the project is to improve the understanding of what these systems are implicitly inferring about users for producing outputs such as recommendations. Are AI systems capable of inadvertently learning political stances of users when computing recommendations? What are the effects of algorithms mediating digital space in opinions and polarization, or agenda setting dynamics? How to leverage knowledge about machine perception of large social systems in designing better AI systems?

Profil du candidat :
The hired doctoral researcher must be able to conduct data analyses of social and media platform data and conduct experiments involving training and deploying machine learning and deep learning algorithms. In particular, the project involves network modelization, and the use of Graph Neural Network and other Recommender System algorithms and methods. The candidate must also have a real interest in learning social sciences and developing team work.
We encourage students with a natural sciences and technology background (e.g., engineering, computer science and mathematics) interested in becoming proficient in social sciences to apply for the position. Applicants with a background in social sciences (e.g., sociology, political science) and strong computational and modelling skills are also encouraged to apply.

Formation et compétences requises :
Experience with ML in Python and data analysis. Interest in expanding research interest towards the frontier between computer sciences and social sciences.

Adresse d’emploi :
1 place St Thomas d’Aquin, Paris, France

Document attaché : 202202170849_Fiche de poste doctorant McCourt AIPM.pdf

Post-Doc position in the research project Ecology and Dependence ECODEP

Offre en lien avec l’Action/le Réseau : – — –/Doctorants

Laboratoire/Entreprise : Laboratory AGM-UMR 8088, CY Cergy Paris Université
Durée : 12 mois
Contact : doukhan@cyu.fr
Date limite de publication : 2022-05-01

Contexte :
In ecology, it is a matter to understand the dynamics and life history of various species through different environments. Indeed, environmental changes can generate rapid changes in the composition of a given population, its length, its phenotypic character or also its genotype distribution.
Demography is generally concerned with predicting human lifespan as well as the population structure with critical involvement in pension systems and public policy decision making. However, these dynamics raise a number of problems to which historical experience does not provide an answer.

Sujet :
The research proposal is to model population growth and to predict biodiversity using innovative stochastic models with a specific focus on ecological problems. The relevant aspects are related to Taylor’s laws [C1998]. In addition, the difficult problems facing marine ecology, in particular those related to the evolution of the environment and its impact on marine species will be of interest. Finally, the applications will be devoted, among others, to the effects of climate change on coral reefs, ecological abundance modelling and the prediction of marine ecosystems [CFM2006], [R2019], [GH2019]. The biostatistical models are also of interest for the project [DFL2017] and they deserve additional attention.
Some of the stylized facts encountered when working with real-world datasets will be enlightened in the postdoc practice. New modelling frameworks for populations dynamics will incorporate, for instance, covariates and we will investigate their statistical properties [GX2017], [KT2019]; see e.g observation models as in [GK2020]. These problems involve isotonic models, parsimony in the presence of non-linearity and non-stationarity [FLN2018], [D2018]. To conclude, causality [W1954] is of importance also to reduce dimensions as noticed in [Z2018]. Publications appeared in the frame of the project ECODEP, see https://doukhan.u-cergy.fr/publications.html.

Profil du candidat :
This post within the EcoDep project https://doukhan.u-cergy.fr/ecodep.html will contribute from both a theoretical and applicative point of view. This postdoc support will consider various issues in Machine Learning for application to ecology data sets and their interpretation. Beyond the standard ML tools, Oracle inequalities, variable selection, individual sequences or model based predictive methods, the project ecodep want to set a special emphasis on IML interpretable Machine Learning to consider issues of high dimensional time series, eg for abundance data sets or for various models with covariates as meteorological data. Specific skills in time series analysis are welcome. IML methods either analyze model components, model sensitivity, or surrogate models.
The post-doc position will be based in Cergy Pontoise, CY Cergy Paris Université, with collaborations in France and abroad for collaborative work within the Ecodep community. English is necessary: a candidate should thus be able to travel by invitations. Travel to Columbia (NYC), Santiago (Chile), Iena (Germany) and several other locations connected to ECODEP are envisioned (depending on the evolution of the pandemic) for research work on:
1- Extensions and applications of Taylor’s law
2- Modeling of abundance
3- Population dynamics
4- Time series issues: isotonicity, causality, covariates, selection
5- Partly observed processes and applications6- Random fields, space time models and their use
7- Panel data studies
8- Risks and data-based studies
Potential locations will depend on the skills and interests in those initial important questions which are not considered in all the Ecodep labs, but CYU will be a fixed point in this position.

Formation et compétences requises :
We are looking for a statistician wishing to be involved in issues and population dynamics This is why we report below several questions of importance in the project. The modelling of population dynamics is of paramount importance in many areas of application.
Qualification PhD in Mathematical Statistics

Adresse d’emploi :
Cergy Pontoise, CY Cergy Paris Université

Document attaché : 202202161046_PageWeb.pdf

Adaptation d’algorithmes de recherche de Process Mining aux besoins d’une startup

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : UTT – LIST3N
Durée : 6 mois
Contact : frederic.bertrand@utt.fr
Date limite de publication : 2022-03-15

Contexte :
Le laboratoire LIST3N (Informatique et Société Numérique) développe des approches efficaces (concepts, modèles, méthodes et outils) pour traiter l’ensemble de la chaîne de traitement des données, des capteurs aux usages, en passant par l’analyse et l’optimisation des données.

Sujet :
Le projet, spécialisé dans le domaine du Process Mining, comprend Frédéric Bertrand, Myriam Maumy, Yoann Valero et Benoit Vuillemin, experts du domaine, et est en collaboration avec la startup Your Data Consulting.

Dans le cadre d’un projet sur le domaine du Process Mining1 en collaboration avec la startup Your Data Consulting, proposant l’outil LiveJourney2, un stagiaire pourrait apporter sa contribution en faisant le lien entre les demandes de l’entreprise et les propositions des travaux de recherche académiques, faites aux travers d’un post doctorat (Benoit Vuillemin) et d’un doctorat (Yoann Valero).
Les travaux attendus incluent, entre autres :
– Étude, amélioration et optimisation des algorithmes de recherche. Cela comprend entre autres, des algorithmes de recherche de règles de prédiction3 et de Deep Learning4. Pour cela, vous serez sous la supervision des concepteurs de ces algorithmes.
– Réunions fréquentes avec les cadres de la startup pour non seulement définir leurs besoins, mais aussi identifier et communiquer ce qui est possible.
– Adaptation et optimisation des algorithmes de recherche aux besoins de l’entreprise.

1 Wil Van Der Aalst, « Process mining », Communications of the ACM, août 2012, https://dl.acm.org/doi/10.1145/2240236.2240257.
2 « Livejourney – Logiciel de Process Mining », s. d., https://www.livejourney.com/fr/.
3 Philippe Fournier-Viger et al., « Mining Partially-Ordered Sequential Rules Common to Multiple Sequences », IEEE Transactions on Knowledge and Data Engineering 27, no 8 (1 août 2015): 2203‑16, https://doi.org/10.1109/TKDE.2015.2405509; Benoit Vuillemin et al., « TSRuleGrowth: Mining Partially-Ordered Prediction Rules From a Time Series of Discrete Elements, Application to a Context of Ambient Intelligence », in Advanced Data Mining and Applications, vol. 11888, Lecture Notes in Computer Science (Cham: Springer International Publishing, 2019), 119‑34, https://doi.org/10.1007/978-3-030-35231-8_9.
4 Leila Arras et al., « Explaining and Interpreting LSTMs », in Explainable AI: Interpreting, Explaining and Visualizing Deep Learning, éd. par Wojciech Samek et al., vol. 11700, Lecture Notes in Computer Science (Cham: Springer International Publishing, 2019), 211‑38, https://doi.org/10.1007/978-3-030-28954-6_11; Antonia Creswell et al., « Generative Adversarial Networks: An Overview », IEEE Signal Processing Magazine 35, no 1 (janvier 2018): 53‑65, https://doi.org/10.1109/MSP.2017.2765202.

Profil du candidat :
Nous avons besoin d’un profil comprenant plusieurs qualités majeures :
– Expérience dans le code, notamment en Python, et ayant envie d’expérimenter de nouveaux langages, tels que Julia,
– Capacité d’identifier des objectifs de haut niveau provenant d’une entreprise et de les matérialiser à l’aide des algorithmes de recherche fournis,
– Force de proposition et de créativité, pour la startup comme pour les chercheurs.

Formation et compétences requises :
BAC +4/+5
Informatique

Adresse d’emploi :
12, rue Marie Curie
10000 Troyes

Document attaché : 202202151246_original.pdf

IOT-ML : Secure Machine Learning on IOT Traces for Daily Activity Discovery

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : Equipe PETRUS INRIA / UVSQ
Durée : 6 mois
Contact : luc.bouganim@inria.fr
Date limite de publication : 2022-06-30

Contexte :
The PETRUS team (Inria/UVSQ), in association with the Hippocad company and the Yvelines Departmental Council, is currently deploying secure home boxes for 10,000 patients in the Yvelines region. These boxes, based on the team’s research results (DBMS embedded in secure hardware), include a personal medical-social database to improve care coordination for dependent people at home. Medical and social workers interact with these secure boxes via a smartphone application. Our objective is to enhance these boxes with the ability to communicate with IOT sensors measuring e.g., luminosity, movement, temperature, to improve patient monitoring. The raw data from the sensors are analyzed by Machine Learning (ML) techniques to identify the patient activities and thus, detect the evolution of patients towards risk situations like depression or illness. Because of their precision, these raw data are however very intrusive. The originality of our approach is to allow a local processing of these data in each box which includes hardware security elements, in order to externalize only the relevant information: alerts, aggregated values on patient dashboards.

Sujet :
ML algorithms build a model based on a training dataset in order to make predictions, in our case, to discover the activity of an individual based on her IOT traces. Beside the classical issues of data representations (from IOT traces to a dataset that can feed an ML algorithm), our approach faces two challenges:
First, we have no possibility to obtain a training dataset for each targeted home-box user. Indeed, we cannot ask elderly people to label their activities during some weeks in order to build the corresponding training datasets: It would be too complex, costly and error prone without a personal assistant. We can however use existing datasets labelled for daily activity discovery (e.g., [1]) and use semi-supervised ML approaches [3] to dynamically adapt the produced model to the targeted home-box user. Indeed semi-supervised approaches use un-labelled data to refine an existing model obtained on labelled data. Other strategies could be defined based on a minimal feedback from the user or on some questionnaires describing the typical activities of the user.
Second, the ML algorithms must be computed inside the home-box, and more precisely in the secure part of the home-box which is composed by a microcontroller with limited RAM resource and a trusted platform module (TPM). Thus the algorithms must be efficient despite limited RAM resources. This may imply to define specific data structures adapted to this environment.

Profil du candidat :
The applicant could be willing to do a Master2 internship or a part-time trainee (Master2 level), or having completed a Master2 and willing to do a PhD

Formation et compétences requises :
• ML algorithm knowledge
• Python (knowledge in C or Rust will be appreciated)

Adresse d’emploi :
UVSQ – Versailles – 45 avenue des états unis.

Document attaché : 202202141426_Master-internship-2022-IOT-ML.pdf

Fouille de modèle pour explorer les avenirs plausibles de la zone des Niayes au Sénégal

Offre en lien avec l’Action/le Réseau : – — –/– — –

Laboratoire/Entreprise : UMR TETIS
Durée : 6 mois
Contact : camille.jahel@cirad.fr
Date limite de publication : 2022-03-31

Contexte :
La zone des Niayes fournit 70% des produits horticoles à Dakar, profitant d’une nappe phréatique peu profonde, d’un climat favorable et de sols fertiles. Mais ces dernières années ont été marquées par une baisse importante du niveau de la nappe et une salinisation progressive des terres par invasion marine, du fait d’une diminution de la pluviométrie. A cela s’ajoute des problématiques de surexploitation des ressources hydriques par les exploitations agricoles, les agro-industries et les exploitations minières qui ne cessent de s’agrandir. Les prévisions climatiques pour les prochaines années, particulièrement alarmantes pour le Sénégal, tendent à montrer que ces tendances risquent de s’amplifier, menaçant directement toutes les exploitations agricoles de la zone.
Il est donc urgent de prendre la mesure de ces changements pour tenter de les atténuer. Dans ce contexte, une série d’ateliers de prospective ont été menés en 2018, qui ont permis de dessiner les contours de scénarios d’évolution des Niayes (Camara et al., 2020 ). Mais ces scénarios sont dans un registre narratif et qualitatif et doivent maintenant être illustrés d’indicateurs quantitatifs.
Pour cela, une équipe multidisciplinaire de modélisateurs et thématiciens ont écrit un modèle des dynamiques de la zone des Niayes, à l’aide de la plateforme de modélisation spatiale Ocelet (www.ocelet.fr). Le modèle articule plusieurs modules, et permet de simuler des dynamiques de la nappe phréatique, l’étalement urbain, l’avancée du domaine cultivé, les productions agricoles, les revenus agricoles et les emplois agricoles. Le modèle a été construit de manière à reproduire les dynamiques de ces différents modules observés ces 15 dernières années. Il s’agit pour le stagiaire d’explorer la diversité des résultats en entrée et en sortie de modèle et enfin de l’utiliser pour simuler les différents scénarios plausibles.

1 Camara, C., Bourgeois, R., & Jahel, C. (2019). Anticiper l’avenir des territoires agricoles en Afrique de l’Ouest: le cas des Niayes au Sénégal.

Sujet :
La première phase consistera à identifier dans les résultats de sortie du modèle ceux qui correspondent aux scénarios qualitatifs identifiés par les acteurs en 2018 (approche experte). A partir de cet espace des sorties et en utilisant une des méthodes telle qu’OSE, le stagiaire identifiera dans l’espace des entrées les jeux de paramètres qui conduisent aux espaces des sorties considérées par les experts. Pour cela, des séries de simulations seront lancées sur des périodes simulées de 20 ans, en fonction de jeux de paramètres cohérents avec les scénarios qualitatifs produits plus tôt et en insérant différentes « ruptures » dans les simulations (par exemple, introduction d’un nouveau paramètre en cours de simulation). Ce travail d’exploration et d’analyse de l’espace des sorties sera mené par le stagiaire, en s’inspirant là aussi des travaux de la communauté d’OpenMole.
Le stagiaire sera alors à même de produire une interface de visualisation des trajectoires territoriales qui permette aux décideurs et aux chercheurs d’identifier les bifurcations dans les scénarios simulés parmi les avenirs plausibles de la zone des Niayes. Le travail de visualisation des données en sortie – comme par exemple, des cartes d’occurrence de phénomène pour un même scénario, ou une présentation de l’espace des possibles, etc. – fournira le contenu à la plateforme de visualisation.

Profil du candidat :
Durée du stage :
6 mois. Début du stage Avril 2022.

Encadrement :
Le stagiaire sera co-encadré par deux chercheurs du Cirad, Camille Jahel (TETIS) et Etienne Delay (SENS)

Rémunération :
Indemnité de stage en vigueur (environ 573 €/mois).
Prise en charge des frais relatifs aux éventuels déplacements.

Contact :
camille.jahel@cirad.fr
etienne.delay@cirad.fr

Formation et compétences requises :

Adresse d’emploi :
Le stagiaire sera accueilli à la maison de la télédétection (www.teledetection.fr), à Montpellier, en fonction du contexte sanitaire en France.

Document attaché : 202202110922_Fouille de modèle et visualisation de données pour explorer les avenirs plausibles de la zone des Niayes au Sénégal_vf.pdf