Diego Ihara Centurion

activity

20182023

collaborators

3 papers

cs.LG2023

Geometric Algorithms for $k$ -NN Poisoning

Diego Ihara Centurion, Karine Chubarian, Bohan Fan +4

We propose a label poisoning attack on geometric data sets against $k$ -nearest neighbor classification. We provide an algorithm that can compute an $ε n$ -additive approxi…

cs.DS2020

Learning Lines with Ordinal Constraints

Bohan Fan, Diego Ihara Centurion, Neshat Mohammadi +3

We study the problem of finding a mapping $f$ from a set of points into the real line, under ordinal triple constraints. An ordinal constraint for a triple of points $(u, v, w)$ asse…

cs.CG2018

Algorithms for metric learning via contrastive embeddings

Diego Ihara Centurion, Neshat Mohammadi, Anastasios Sidiropoulos

We study the problem of supervised learning a metric space under discriminative constraints. Given a universe $X$ and sets $S, D \subset (2 X)$ of similar and…

Geometric Algorithms for k-NN Poisoning

Learning Lines with Ordinal Constraints

Algorithms for metric learning via contrastive embeddings

Geometric Algorithms for $k$ -NN Poisoning