Search Results for author: Ziye Ma

Found 9 papers, 2 papers with code

Absence of spurious solutions far from ground truth: A low-rank analysis with high-order losses

no code implementations10 Mar 2024 Ziye Ma, Ying Chen, Javad Lavaei, Somayeh Sojoudi

Matrix sensing problems exhibit pervasive non-convexity, plaguing optimization with a proliferation of suboptimal spurious solutions.

Noisy Low-rank Matrix Optimization: Geometry of Local Minima and Convergence Rate

1 code implementation8 Mar 2022 Ziye Ma, Somayeh Sojoudi

We prove that as long as the RIP constant of the noiseless objective is less than $1/3$, any spurious local solution of the noisy optimization problem must be close to the ground truth solution.

Sharp Restricted Isometry Property Bounds for Low-rank Matrix Recovery Problems with Corrupted Measurements

no code implementations18 May 2021 Ziye Ma, Yingjie Bi, Javad Lavaei, Somayeh Sojoudi

By analyzing the landscape of the non-convex problem, we first propose a global guarantee on the maximum distance between an arbitrary local minimizer and the ground truth under the assumption that the RIP constant is smaller than $1/2$.

Matrix Completion Retrieval

Towards Optimal Branching of Linear and Semidefinite Relaxations for Neural Network Robustness Certification

no code implementations22 Jan 2021 Brendon G. Anderson, Ziye Ma, Jingqi Li, Somayeh Sojoudi

We extend the analysis to the SDP, where the feasible set geometry is exploited to design a branching scheme that minimizes the worst-case SDP relaxation error.

A Sequential Framework Towards an Exact SDP Verification of Neural Networks

no code implementations16 Oct 2020 Ziye Ma, Somayeh Sojoudi

We analyze the performance of this sequential SDP method both theoretically and empirically, and show that it bridges the gap as the number of cuts increases.

Tightened Convex Relaxations for Neural Network Robustness Certification

no code implementations1 Apr 2020 Brendon G. Anderson, Ziye Ma, Jingqi Li, Somayeh Sojoudi

In this paper, we consider the problem of certifying the robustness of neural networks to perturbed and adversarial input data.

Decision Making

Certifiably Globally Optimal Extrinsic Calibration from Per-Sensor Egomotion

1 code implementation10 Sep 2018 Matthew Giamou, Ziye Ma, Valentin Peretroukhin, Jonathan Kelly

We present a certifiably globally optimal algorithm for determining the extrinsic calibration between two sensors that are capable of producing independent egomotion estimates.

Robotics

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