activity
20242026
collaborators

9 papers

cs.IR2026

SABER-Math: Automated Benchmark for Information Retrieval Evaluation in Mathematics

Nikolay Georgiev, Maria Drencheva, Kseniia Ibragimova +3

As agentic AI systems tackle more complex mathematical tasks, they increasingly rely on information retrieval (IR) to search problem databases, theorem libraries, and educational r…

cs.CL2026

Not All Proofs Are Equal: Evaluating LLM Proof Quality Beyond Correctness

Ivo Petrov, Jasper Dekoninck, Dimitar I. Dimitrov +1

Large language models (LLMs) have become capable mathematical problem-solvers, often producing correct proofs for challenging problems. However, correctness alone is not sufficient…

cs.CR2026

TIGER: Inverting Transformer Gradients via Embedding-Subspace Distance Optimization

William Kalikman, Ivo Petrov, Dimitar I. Dimitrov +1

Federated learning allows multiple clients to jointly train a shared model by sending gradient updates to a central server while keeping raw inputs local. However, prior gradient i…

stat.ML2026

LARP: Learner-Agnostic Robust Data Prefiltering

Kristian Minchev, Dimitar I. Dimitrov, Nikola Konstantinov

Public datasets, crucial for modern machine learning and statistical inference, often contain low-quality or contaminated samples that can harm model performance. This creates a ne…

cs.LG2025

SPEAR++: Scaling Gradient Inversion via Sparsely-Used Dictionary Learning

Alexander Bakarsky, Dimitar I. Dimitrov, Maximilian Baader +1

Federated Learning has seen an increased deployment in real-world scenarios recently, as it enables the distributed training of machine learning models without explicit data sharin…

cs.LG2025

MixAT: Combining Continuous and Discrete Adversarial Training for LLMs

Csaba Dékány, Stefan Balauca, Robin Staab +2

Despite recent efforts in Large Language Model (LLM) safety and alignment, current adversarial attacks on frontier LLMs can still consistently force harmful generations. Although a…