请简单解释一下深度学习的概念，并告诉我在哪些领域它被广泛应用？要求使用英语回答，以json格式提供，包含两个键："Concept" 和 "Application"。
user
```json
{
  "Concept": "Deep learning is a subset of machine learning that uses neural networks with many layers to model complex patterns in data.",
  "Application": "Deep learning is widely used in fields such as computer vision, natural language processing, speech recognition, and autonomous vehicles."
}
```
assistant