School for Advanced Studies in the Social Sciences

About: School for Advanced Studies in the Social Sciences is a facility organization based out in Villejuif, France. It is known for research contribution in the topics: Population & Politics. The organization has 1230 authors who have published 2084 publications receiving 57740 citations. The organization is also known as: Ecole des Hautes Etudes en Sciences Sociales & EHESS.

The ACLEW DiViMe: An Easy-to-use Diarization Tool.

Abstract: We present “DiViMe”, an open-source virtual machine aimed at packaging speech technology for real-life data, and developed in the context of the “Analyzing Children’s Language Environments across the World” Project. This first release focuses on Speech Activity Detection, Speaker Diarization, and their evaluation. The present paper introduces the set of included tools and the current workflow, which is focused on making minimal assumptions regarding users’ technical skills. Additionally, we show how the current DiViMe tools fare against three sets of challenging data. In a first experiment, we look at performance with samples extracted from daylong recordings gathered using the LENA system from English-learning children. We find that the performance of the tools currently in DiViMe is not far from that achieved by the LENA proprietary software. In a second experiment, we generalize to other samples of child-centered daylong files, gathered with non-LENA hardware from non-English-learning children, showing that performance does not degrade in this condition. Finally, we report on performance in the DiHARD 2018 Challenge Test Data. Originally conceived in the “Speech Recognition Virtual Kitchen”, DiViMe is a promising platform for packaging speech technology tools for widespread re-use, with potential impact on both fundamental and applied speech and language research.

Regular Orientations, Arboricity, and Augmentation

Abstract: Regular orientations, that is orientations such that almost all the vertices have the same indegree, relates many combinatorial and topological properties, such as arboricity, page number, and planarity. These orientations are a basic tool in solving combinatorial problems that preserve topological properties. Planar augmentations are a simple example of such problems.

Tubes and bubbles topological confinement of YouTube recommendations.

Abstract: The role of recommendation algorithms in online user confinement is at the heart of a fast-growing literature. Recent empirical studies generally suggest that filter bubbles may principally be observed in the case of explicit recommendation (based on user-declared preferences) rather than implicit recommendation (based on user activity). We focus on YouTube which has become a major online content provider but where confinement has until now been little-studied in a systematic manner. We aim to contribute to the above literature by showing whether recommendation on YouTube exhibits phenomena typical of filter bubbles, tending to lower the diversity of consumed content. Starting from a diverse number of seed videos, we first describe the properties of the sets of suggested videos in order to design a sound exploration protocol able to capture latent recommendation graphs recursively induced by these suggestions. These graphs form the background of potential user navigations along non-personalized recommendations. From there, be it in topological, topical or temporal terms, we show that the landscape of what we call mean-field YouTube recommendations is often prone to confinement dynamics. Moreover, the most confined recommendation graphs i.e., potential bubbles, seem to be organized around sets of videos that garner the highest audience and thus plausibly viewing time.

Changing social mobility in nineteenth-century France.

Abstract: (1999). Changing Social Mobility in Nineteenth-Century France. Historical Methods: A Journal of Quantitative and Interdisciplinary History: Vol. 32, No. 2, pp. 53-73.