61results about How to "Reduce Communication Complexity" patented technology

The invention discloses a security outsourcing machine learning method based on differential privacy, which belongs to the field of network space security. The method realizes that the data provider can process the data with homomorphic encryption technology without disclosing sensitive data to a third party. After uploading to the cloud server, the cloud server stores and adds noise to the encrypted data and obtains query functions through interaction with the machine learning model provider for machine learning. This method effectively combines outsourcing computing with differential privacy, which not only ensures the security and privacy of machine learning, but also greatly reduces computing overhead and computing costs and improves computing efficiency, effectively alleviating the problems faced by traditional outsourcing machine learning methods. inefficiencies and security issues.

The invention discloses a method and device for sharding of a blockchain based on application, and belongs to the technical field of blockchains. The method comprises the steps of: dividing the blockchain into a main chain layer and a layer consisting of a plurality of application sub-shardings, wherein the main chain layer is used for taking charging of overall management of the blockchain, primary asset transactions and collection for state checkpoint of the plurality of application sub-shardings; enabling an application flag and a transaction partiton_num carried by each transaction to be set correspondingly to the corresponding application sub-sharding; determining the application sub-sharding to which the transaction belongs according to the application flag and the transaction partiton_num carried by each transaction; and performing communication among the plurality of application sub-shardings through a cross-sharding protocol of the main chain layer. The method of the inventionhas the beneficial effects that communication complexity in a communication blockchain network is greatly reduced while security is balanced, and a consensus efficiency and network expansibility areimproved, thus the method has a good application prospect, and can be promoted in various fields related to the blockchain.

The invention relates to a grouped data sending method, which comprises the following steps of: receiving grouped data comprising an identifier of a target terminal from a source terminal; finding out whether a path reaching the target terminal exists in a routing cache list; if finding out the path reaching the target terminal exists, carrying out interface selection; and forwarding the grouped data through a selected interface according to the found path. The invention further relates to another two grouped data sending methods corresponding to the grouped data sending method, and a terminal and a base station corresponding to the grouped data sending method. By adoption of the grouped data sending method, the base station and the terminal disclosed by the invention, link treatment can be carried out at the terminal.