activity
20212026
most citedOptimality of the Johnson-Lindenstrauss Dimensionality Reduction for Practical Measures

1 citations · 4 across the 8 of their papers we have counts for

collaborators

9 papers

cs.SE2026★ 1 cited

Beyond Blind Spots: Analytic Hints for Mitigating LLM-Based Evaluation Pitfalls

Ora Nova Fandina, Eitan Farchi, Shmulik Froimovich +4

Large Language Models are increasingly deployed as judges (LaaJ) in code generation pipelines. While attractive for scalability, LaaJs tend to overlook domain specific issues raisi…

cs.SE2025

Vintage Code, Modern Judges: Meta-Validation in Low Data Regimes

Ora Nova Fandina, Gal Amram, Eitan Farchi +6

Application modernization in legacy languages such as COBOL, PL/I, and REXX faces an acute shortage of resources, both in expert availability and in high-quality human evaluation d…

cs.SE2025

Automated Validation of LLM-based Evaluators for Software Engineering Artifacts

Ora Nova Fandina, Eitan Farchi, Shmulik Froimovich +4

Automation in software engineering increasingly relies on large language models (LLMs) to generate, review, and assess code artifacts. However, establishing LLMs as reliable evalua…

cs.CL2024

Exploring Straightforward Conversational Red-Teaming

George Kour, Naama Zwerdling, Marcel Zalmanovici +3

Large language models (LLMs) are increasingly used in business dialogue systems but they pose security and ethical risks. Multi-turn conversations, where context influences the mod…

cs.AI2024

How Safe is Your Safety Metric? Automatic Concatenation Tests for Metric Reliability

Ora Nova Fandina, Leshem Choshen, Eitan Farchi +3

Consider a scenario where a harmfulness evaluation metric intended to filter unsafe responses from a Large Language Model. When applied to individual harmful prompt-response pairs,…

cs.CL2023★ 1 cited

Unveiling Safety Vulnerabilities of Large Language Models

George Kour, Marcel Zalmanovici, Naama Zwerdling +5

As large language models become more prevalent, their possible harmful or inappropriate responses are a cause for concern. This paper introduces a unique dataset containing adversa…

cs.DS2022

Barriers for Faster Dimensionality Reduction

Ora Nova Fandina, Mikael Møller Høgsgaard, Kasper Green Larsen

The Johnson-Lindenstrauss transform allows one to embed a dataset of points in into while preserving the pairwise distance between any pair of po…

cs.DS2022★ 1 cited

The Fast Johnson-Lindenstrauss Transform is Even Faster

Ora Nova Fandina, Mikael Møller Høgsgaard, Kasper Green Larsen

The seminal Fast Johnson-Lindenstrauss (Fast JL) transform by Ailon and Chazelle (SICOMP'09) embeds a set of points in -dimensional Euclidean space into optimal $k=O(\vareps…

cs.DS2021★ 1 cited

Optimality of the Johnson-Lindenstrauss Dimensionality Reduction for Practical Measures

Yair Bartal, Ora Nova Fandina, Kasper Green Larsen

It is well known that the Johnson-Lindenstrauss dimensionality reduction method is optimal for worst case distortion. While in practice many other methods and heuristics are used,…