Search Results for author: Daniel Cullina

Found 15 papers, 2 papers with code

Gaussian Database Alignment and Gaussian Planted Matching

no code implementations5 Jul 2023 Osman Emre Dai, Daniel Cullina, Negar Kiyavash

We study an instance of the database alignment problem with multivariate Gaussian features and derive results that apply both for database alignment and for planted matching, demonstrating the connection between them.

Lower Bounds on the Robustness of Fixed Feature Extractors to Test-time Adversaries

no code implementations29 Sep 2021 Arjun Nitin Bhagoji, Daniel Cullina, Ben Zhao

In this paper, we develop a methodology to analyze the robustness of fixed feature extractors, which in turn provide bounds on the robustness of any classifier trained on top of it.

Lower Bounds on Cross-Entropy Loss in the Presence of Test-time Adversaries

1 code implementation16 Apr 2021 Arjun Nitin Bhagoji, Daniel Cullina, Vikash Sehwag, Prateek Mittal

In particular, it is critical to determine classifier-agnostic bounds on the training loss to establish when learning is possible.

Lower Bounds on Adversarial Robustness from Optimal Transport

1 code implementation NeurIPS 2019 Arjun Nitin Bhagoji, Daniel Cullina, Prateek Mittal

In this paper, we use optimal transport to characterize the minimum possible loss in an adversarial classification scenario.

Adversarial Robustness Classification +1

Better the Devil you Know: An Analysis of Evasion Attacks using Out-of-Distribution Adversarial Examples

no code implementations5 May 2019 Vikash Sehwag, Arjun Nitin Bhagoji, Liwei Song, Chawin Sitawarin, Daniel Cullina, Mung Chiang, Prateek Mittal

A large body of recent work has investigated the phenomenon of evasion attacks using adversarial examples for deep learning systems, where the addition of norm-bounded perturbations to the test inputs leads to incorrect output classification.

Autonomous Driving General Classification

Database Alignment with Gaussian Features

no code implementations4 Mar 2019 Osman Emre Dai, Daniel Cullina, Negar Kiyavash

We consider the problem of aligning a pair of databases with jointly Gaussian features.

PAC-learning in the presence of adversaries

no code implementations NeurIPS 2018 Daniel Cullina, Arjun Nitin Bhagoji, Prateek Mittal

We then explicitly derive the adversarial VC-dimension for halfspace classifiers in the presence of a sample-wise norm-constrained adversary of the type commonly studied for evasion attacks and show that it is the same as the standard VC-dimension, closing an open question.

Open-Ended Question Answering PAC learning

Partial Recovery of Erdős-Rényi Graph Alignment via $k$-Core Alignment

no code implementations10 Sep 2018 Daniel Cullina, Negar Kiyavash, Prateek Mittal, H. Vincent Poor

This estimator searches for an alignment in which the intersection of the correlated graphs using this alignment has a minimum degree of $k$.

PAC-learning in the presence of evasion adversaries

no code implementations5 Jun 2018 Daniel Cullina, Arjun Nitin Bhagoji, Prateek Mittal

We then explicitly derive the adversarial VC-dimension for halfspace classifiers in the presence of a sample-wise norm-constrained adversary of the type commonly studied for evasion attacks and show that it is the same as the standard VC-dimension, closing an open question.

Open-Ended Question Answering PAC learning

Analysis of a Canonical Labeling Algorithm for the Alignment of Correlated Erdős-Rényi Graphs

no code implementations25 Apr 2018 Osman Emre Dai, Daniel Cullina, Negar Kiyavash, Matthias Grossglauser

Graph alignment in two correlated random graphs refers to the task of identifying the correspondence between vertex sets of the graphs.

Graph Matching

Exact alignment recovery for correlated Erdős-Rényi graphs

no code implementations18 Nov 2017 Daniel Cullina, Negar Kiyavash

We consider the problem of perfectly recovering the vertex correspondence between two correlated Erd\H{o}s-R\'enyi (ER) graphs on the same vertex set.

On the Simultaneous Preservation of Privacy and Community Structure in Anonymized Networks

no code implementations25 Mar 2016 Daniel Cullina, Kushagra Singhal, Negar Kiyavash, Prateek Mittal

We ask the question "Does there exist a regime where the network cannot be deanonymized perfectly, yet the community structure could be learned?."

Community Detection Stochastic Block Model

Improved Achievability and Converse Bounds for Erdős-Rényi Graph Matching

no code implementations2 Feb 2016 Daniel Cullina, Negar Kiyavash

For a pair of correlated graphs on the same vertex set, the correspondence between the vertices can be obscured by randomly permuting the vertex labels of one of the graphs.

Graph Matching

Cannot find the paper you are looking for? You can Submit a new open access paper.