activity
20232026
collaborators

5 papers

math.OC2026

Order-2 Tightness of Block-Sparse SOS Relaxations for One-Layer ReLU Network Verification with a Matching Input-Sharing Graph

Godai Azuma, Sunyoung Kim, Makoto Yamashita

Azuma, Kim, and Yamashita formulated the verification problem for one-layer ReLU networks as a quadratically constrained quadratic program and established tight semidefinite relaxa…

math.OC2026

Tight Conic Relaxations for Rank-one Doubly Nonnegative Matrix Completion

Godai Azuma, Sunyoung Kim, Makoto Yamashita

We study tight conic relaxations for a quadratically constrained quadratic programming (QCQP) formulation of rank-one doubly nonnegative (DNN) matrix completion. Motivated by spars…

math.OC2025

Tight Semidefinite Relaxations for Verifying Robustness of Neural Networks

Godai Azuma, Sunyoung Kim, Makoto Yamashita

For verifying the safety of neural networks (NNs), Fazlyab et al. (2019) introduced a semidefinite programming (SDP) approach called DeepSDP. This formulation can be viewed as the…

math.OC2024

T-semidefinite programming relaxation with third-order tensors for constrained polynomial optimization

Hiroki Marumo, Sunyoung Kim, Makoto Yamashita

We study T-semidefinite programming (SDP) relaxation for constrained polynomial optimization problems (POPs). T-SDP relaxation for unconstrained POPs was introduced by Zheng, Huang…

math.OC2023

Exact Matrix Completion via High-Rank Matrices in Sum-of-Squares Relaxations

Godai Azuma, Sunyoung Kim, Makoto Yamashita

We study exact matrix completion from partially available data with hidden connectivity patterns. Exact matrix completion was shown to be possible recently by Cosse and Demanet in…