User profiles for Sacha Lévy

Sacha Lévy

Yale University
Verified email at yale.edu
Cited by 39

[HTML][HTML] The murine Microenvironment Cell Population counter method to estimate abundance of tissue-infiltrating immune and stromal cell populations in murine …

F Petitprez, S Levy, CM Sun, M Meylan, C Linhard… - Genome medicine, 2020 - Springer
Quantifying tissue-infiltrating immune and stromal cells provides clinically relevant information
for various diseases. While numerous methods can quantify immune or stromal cells in …

InfoShield: Generalizable information-theoretic human-trafficking detection

MC Lee, C Vajiac, A Kulshrestha, S Levy… - 2021 IEEE 37th …, 2021 - ieeexplore.ieee.org
Given a million escort advertisements, how can we spot near-duplicates? Such micro-clusters
of ads are usually signals of human trafficking. How can we summarize them, visually, to …

Cell2sentence: Teaching large language models the language of biology

D Levine, S Lévy, SA Rizvi, N Pallikkavaliyaveetil… - bioRxiv, 2023 - biorxiv.org
Large language models like GPT have shown impressive performance on natural language
tasks. Here, we present a novel method to directly adapt these pretrained models to a …

Deltashield: Information theory for human-trafficking detection

C Vajiac, MC Lee, A Kulshrestha, S Levy… - ACM Transactions on …, 2023 - dl.acm.org
Given a million escort advertisements, how can we spot near-duplicates? Such micro-clusters
of ads are usually signals of human trafficking (HT). How can we summarize them to …

Online partisan polarization of covid-19

Z Yang, A Imouza, K Pelrine, S Lévy… - … Conference on Data …, 2021 - ieeexplore.ieee.org
In today’s age of (mis)information, many people utilize various social media platforms in an
attempt to shape public opinion on several important issues, including elections and the …

Party Prediction for Twitter

K Pelrine, A Imouza, Z Yang, JJ Tian, S Lévy… - arXiv preprint arXiv …, 2023 - arxiv.org
A large number of studies on social media compare the behaviour of users from different
political parties. As a basic step, they employ a predictive model for inferring their political …

Operator Learning Meets Numerical Analysis: Improving Neural Networks through Iterative Methods

E Zappala, D Levine, S He, S Rizvi, S Levy… - arXiv preprint arXiv …, 2023 - arxiv.org
Deep neural networks, despite their success in numerous applications, often function without
established theoretical foundations. In this paper, we bridge this gap by drawing parallels …

Active Keyword Selection to Track Evolving Topics on Twitter

S Lévy, F Poursafaei, K Pelrine… - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
How can we study social interactions on evolving topics at a mass scale? Over the past
decade, researchers from diverse fields such as economics, political science, and public health …

[CITATION][C] La responsabilité: étude de sociologie

P Fauconnet, S Lévy-Bruhl - 2023 - PUF

DisKeyword: Tweet Corpora Exploration for Keyword Selection

S Lévy, R Rabbany - Proceedings of the Sixteenth ACM International …, 2023 - dl.acm.org
How to accelerate the search for relevant topical keywords within a tweet corpus?
Computational social scientists conducting topical studies employ large, self-collected or …