Zohar Karnin

Budget-Constrained Item Cold-Start Handling in Collaborative Filtering Recommenders via Optimal Design

2015

It is well known that collaborative filtering (CF) based recommender systems provide better modeling of users and items associated with considerable rating history. The lack of historical ratings results in the user and the item …

Correlated Rounding of Multiple Uniform Matroids and Multi-Label Classification

2017 · DROPS (Schloss Dagstuhl – Leibniz Center for Informatics)

We introduce correlated randomized dependent rounding where, given multiple points y^1,...,y^n in some polytope P\subseteq [0,1]^k, the goal is to simultaneously round each y^i to some integral z^i in P while preserving both marginal values …

Domain Adaptation via Anaomaly Detection

2021

Domain shift in finetuning from pre-training can significantly impact the performance of deep neural networks. In NLP, this led to domain specific models such as SciBERT, BioBERT, ClinicalBERT, and FinBERT; each pre-trained on a different, …

Generating Q&A Benchmarks for RAG Evaluation in Enterprise Settings

2025

Simone Filice, Guy Horowitz, David Carmel, Zohar Karnin, Liane Lewin-Eytan, Yoelle Maarek. Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 6: Industry Track). 2025.