Institution profile

Institut de Recherche pour le Developpement

Academic institutioneurope · fr
Official website
Research library7linked papers
Opportunities0open roles
Selected work

Representative Papers

Conditional multivariate functional PCA for the reconstruction of temperature and salinity profiles partially sampled by deep-diving marine mammals

Aug 05, 2026

This study addresses the incomplete depth coverage of temperature–salinity profiles collected by deep-diving marine mammals in the Indian Ocean sector of the Southern Ocean, which arises from behavioral differences among individuals. To overcome this limitation, the authors propose a multivariate functional principal component analysis method incorporating geographic covariates. By modeling the mean and covariance structure of complete bivariate profiles, they construct eigenfunction bases and integrate a measurement error model to estimate conditional functional principal scores, enabling high-fidelity reconstruction of truncated profiles across the full depth range. In simulations, the approach improves reconstruction accuracy by 30% for temperature and 33% for salinity in the 20–500 m layer when applied to profiles truncated at 250 m. The method successfully reconstructs approximately 90,000 profiles across a 3-million-square-kilometer region surrounding the French subantarctic islands, marking the first large-scale, accurate recovery of incomplete oceanographic profiles.

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Data Quality Profiling at Scale with Progressive Sampling: A Benchmark for Data-Centric AI Pipelines

Jul 28, 2026

This study addresses the high computational cost of full-dataset scans for data quality assessment—such as detecting missing values, duplicates, and outliers—which hinders near real-time monitoring. The authors systematically evaluate nine progressive sampling strategies across diverse real-world and synthetic datasets, comparing blind sampling methods (e.g., uniform random, clustering-based, Yamane) against proxy-guided approaches (e.g., MCMC, DAG-based, stratified weighting). Contrary to the prevailing assumption that incorporating prior knowledge improves accuracy, large-scale empirical results reveal that representative blind sampling consistently outperforms proxy-guided techniques, primarily due to mismatches between proxy metrics and actual data quality issues. Notably, under a 5% sampling budget, uniform random sampling achieves an average relative error of merely 0.49% with near-linear scalability, whereas DAG-guided methods incur 11–49× higher errors and run 28–47× slower, demonstrating that simple sampling strategies are better suited for production-grade data quality monitoring.

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From Norms to Indicators (N2I-RAG): An Agentic Retrieval-Augmented Generation Framework for Legal Indicator Computation

May 26, 2026

This study addresses the challenges of legal metric computation—namely textual complexity, large scale, high interpretability demands, and variable data quality—which often lead existing methods to produce hallucinations and lack explainability or evidentiary support. To overcome these limitations, this work proposes the first agent-driven Retrieval-Augmented Generation (RAG) framework tailored for legal metric calculation. The approach employs a modular pipeline that integrates adaptive retrieval, large language model agents, and validation mechanisms to enable transparent and traceable evidence selection, statutory linkage, and binary judgment. Experiments on a newly constructed corpus of French maritime environmental law demonstrate that the proposed method significantly outperforms baseline systems and exhibits strong generalization across two injunction-related tasks, offering a novel paradigm for building trustworthy and scalable legal monitoring systems.

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Recent publications

Latest Papers

Conditional multivariate functional PCA for the reconstruction of temperature and salinity profiles partially sampled by deep-diving marine mammals

Aug 05, 2026

This study addresses the incomplete depth coverage of temperature–salinity profiles collected by deep-diving marine mammals in the Indian Ocean sector of the Southern Ocean, which arises from behavioral differences among individuals. To overcome this limitation, the authors propose a multivariate functional principal component analysis method incorporating geographic covariates. By modeling the mean and covariance structure of complete bivariate profiles, they construct eigenfunction bases and integrate a measurement error model to estimate conditional functional principal scores, enabling high-fidelity reconstruction of truncated profiles across the full depth range. In simulations, the approach improves reconstruction accuracy by 30% for temperature and 33% for salinity in the 20–500 m layer when applied to profiles truncated at 250 m. The method successfully reconstructs approximately 90,000 profiles across a 3-million-square-kilometer region surrounding the French subantarctic islands, marking the first large-scale, accurate recovery of incomplete oceanographic profiles.

0 citationsRead paper

Data Quality Profiling at Scale with Progressive Sampling: A Benchmark for Data-Centric AI Pipelines

Jul 28, 2026

This study addresses the high computational cost of full-dataset scans for data quality assessment—such as detecting missing values, duplicates, and outliers—which hinders near real-time monitoring. The authors systematically evaluate nine progressive sampling strategies across diverse real-world and synthetic datasets, comparing blind sampling methods (e.g., uniform random, clustering-based, Yamane) against proxy-guided approaches (e.g., MCMC, DAG-based, stratified weighting). Contrary to the prevailing assumption that incorporating prior knowledge improves accuracy, large-scale empirical results reveal that representative blind sampling consistently outperforms proxy-guided techniques, primarily due to mismatches between proxy metrics and actual data quality issues. Notably, under a 5% sampling budget, uniform random sampling achieves an average relative error of merely 0.49% with near-linear scalability, whereas DAG-guided methods incur 11–49× higher errors and run 28–47× slower, demonstrating that simple sampling strategies are better suited for production-grade data quality monitoring.

0 citationsRead paper

From Norms to Indicators (N2I-RAG): An Agentic Retrieval-Augmented Generation Framework for Legal Indicator Computation

May 26, 2026

This study addresses the challenges of legal metric computation—namely textual complexity, large scale, high interpretability demands, and variable data quality—which often lead existing methods to produce hallucinations and lack explainability or evidentiary support. To overcome these limitations, this work proposes the first agent-driven Retrieval-Augmented Generation (RAG) framework tailored for legal metric calculation. The approach employs a modular pipeline that integrates adaptive retrieval, large language model agents, and validation mechanisms to enable transparent and traceable evidence selection, statutory linkage, and binary judgment. Experiments on a newly constructed corpus of French maritime environmental law demonstrate that the proposed method significantly outperforms baseline systems and exhibits strong generalization across two injunction-related tasks, offering a novel paradigm for building trustworthy and scalable legal monitoring systems.

0 citationsRead paper