3 papers
math.AG2025
Approximate Fiber Products of Schemes and Their Ãtale Homotopical Invariants
Dongfang Zhao
The classical fiber product in algebraic geometry provides a powerful tool for studying loci where two morphisms to a base scheme, and , coincide exactly…
cs.CR2025
IPBA: Imperceptible Perturbation Backdoor Attack in Federated Self-Supervised Learning
Jiayao Wang, Yang Song, Zhendong Zhao +4
Federated self-supervised learning (FSSL) combines the advantages of decentralized modeling and unlabeled representation learning, serving as a cutting-edge paradigm with strong po…
cs.GT2024
Federated Learning and Free-riding in a Competitive Market
Jiajun Meng, Jing Chen, Dongfang Zhao +1
Federated learning (FL) is a collaborative technique for training large-scale models while protecting user data privacy. Despite its substantial benefits, the free-riding behavior…