Which of the following options is not a method in the development of natural language processing?

What is not part of the DNN structure?

In the N-gram model, N refers to ignoring the effect of the above words with a distance greater than N.
The larger the N, the richer the sequence information contained in the model, and the amount of calculation increases.

We usually say 720P video format, what does 720 stand for

What is the use process of ModelArts automatic learning? (Single choice)