5 papers
A Deeper Analysis of Block-Sparse Featurizers
Alexandru-Iulius Jerpelea, Amith Ananthram
The recently introduced block-sparse featurizer (BSF; Fel et al., 2026) is similar to a sparse autoencoder (SAE), but its atomic unit is a small subspace (a block of directions) ra…
Planting a Latent Variable in Natural-Looking Text: a More Realistic Test of Belief States in LLMs and Their Link to Concept Geometry
Alexandru-Iulius Jerpelea
LLMs are thought to track "belief states," i.e., running probability distributions over the latent variables that govern language (Shai et al., 2024; Sarfati et al., 2026), but so…
RoMemes: A multimodal meme corpus for the Romanian language
Vasile Păiş, Sara Niţă, Alexandru-Iulius Jerpelea +2
Memes are becoming increasingly more popular in online media, especially in social networks. They usually combine graphical representations (images, drawings, animations or video)…
Dialectal and Low-Resource Machine Translation for Aromanian
Alexandru-Iulius Jerpelea, Alina Rădoi, Sergiu Nisioi
This paper presents the process of building a neural machine translation system with support for English, Romanian, and Aromanian - an endangered Eastern Romance language. The prim…
Reddit is all you need: Authorship profiling for Romanian
Ecaterina Ştefănescu, Alexandru-Iulius Jerpelea
Authorship profiling is the process of identifying an author's characteristics based on their writings. This centuries old problem has become more intriguing especially with recent…