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where does electrum store data, How Does YouTube Store And Analyze Such Huge Amount of Data?

The focus of artificial intelligence is soaring, there is a lot of hype, and the reality is that AI technology is still in its infancy, and it is difficult to achieve productization. From prototypes to products, many new challenges need to be overcome: where does training data come from, for example? How do people store, organize, refine, and prepare data when training systems? Who can detect the system? How about security: How do you manage and protect sensitive information? How fast does my hardware need to deliver results? Where are the performance bottlenecks and problems?