Definition ∞ Secure gradient sharing is a cryptographic technique utilized in federated learning where multiple parties collaboratively train a machine learning model without directly sharing their raw data. Instead, only the aggregated model updates, or “gradients,” are exchanged, often secured using privacy-preserving methods like homomorphic encryption or secure multi-party computation. This process allows for distributed model training while protecting the confidentiality of individual data contributions. It addresses privacy concerns inherent in traditional centralized machine learning approaches. This method enhances data sovereignty.
Context ∞ Secure gradient sharing is a pivotal concept in the advancement of privacy-preserving artificial intelligence and decentralized machine learning, particularly relevant in sensitive sectors. A key discussion involves optimizing the computational overhead associated with cryptographic methods to ensure practical application at scale. A critical future development includes the refinement of cryptographic protocols and the integration of secure gradient sharing into more robust decentralized AI platforms. This technology aims to enable collaborative intelligence without compromising individual data privacy.
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