It is very important to understand the difference between learning and techniques of training. There are many methods of training including scripted and back tracking jobs.
Facing the explosion of information and data, technology companies first solve the problem of storing historical data, and then improve their ability to handle current high-concurrency data operations. In the third step, they began to think about how to restore the accumulated data. If you consider data collection, transmission, storage, calculation and application as an industrial chain, calculation and application are the most valuable links among them.