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Jincheng Cao

4 accepted papers

2025

NCRE: A Benchmark for Document-level Nominal Compound Relation Extraction

COLING 2025main

Entity and relation extraction is a conventional task in the field of information extraction. Existing work primarily focuses on detecting specific relations between entities, often constrained to particular fields and lacking general applicability. In response, we propose a novel task: nominal comp…

2025

On the Complexity of Finding Stationary Points in Nonconvex Simple Bilevel Optimization

NeurIPS 2025poster

In this paper, we study the problem of solving a simple bilevel optimization problem, where the upper-level objective is minimized over the solution set of the lower-level problem. We focus on the general setting in which both the upper- and lower-level objectives are smooth but potentially nonconve…

Cited by 0SourceScholar
2024

An Accelerated Gradient Method for Convex Smooth Simple Bilevel Optimization

NeurIPS 2024poster

In this paper, we focus on simple bilevel optimization problems, where we minimize a convex smooth objective function over the optimal solution set of another convex smooth constrained optimization problem. We present a novel bilevel optimization method that locally approximates the solution set of…

Cited by 1SourcePDFScholar
2023

Projection-Free Methods for Stochastic Simple Bilevel Optimization with Convex Lower-level Problem

NeurIPS 2023poster

In this paper, we study a class of stochastic bilevel optimization problems, also known as stochastic simple bilevel optimization, where we minimize a smooth stochastic objective function over the optimal solution set of another stochastic convex optimization problem. We introduce novel stochastic b…

Cited by 10SourcePDFScholar