Which of the following neural networks contains feedback connections?

Convolutional layers are indispensable in the hierarchical architecture of convolutional neural networks.

Images with low grayscale levels have richer layers and can show more details than images with high grayscale levels.

The LDA algorithm assumes that the prior distribution of topics in documents and the prior distribution of words in topics both follow the Dirichlet distribution.

In order to better support the development of Shengteng industry, Huawei will invest more than 3 billion yuan in the next five years to support the development of the industry. On the one hand, Huawei will extensively seek cooperation with the industry and gradually open up Shengteng's technical capabilities. Open source the Al training framework, invest Huawei's technical resources and marketing resources, and create a support platform to support the development of Shengteng industry to enable Huawei's partners and developers. Specifically, we will launch three major plans. One is for our business The solution certification program for ISV partners, the developer empowerment and support program for developers and start-ups, and the talent training program for universities and research institutions. Through these three major programs, we hope to develop 3,000 partners in five years and cultivate Millions of developers.