What are the main application fields of artificial intelligence? Better be specific

Personal assistant (voice assistant, voice input, housekeeper, escort robot on smart phone) product examples: Microsoft Xiao Bing, Baidu Secret, Iflytek, AmazonEcho, GoogleHome, etc.

Examples of security products (intelligent monitoring, security robots): Shangtang Technology, Geling Shentong, Shenzhou Haiyun.

Examples of self-driving products (smart cars, public transportation, express vehicles, industrial applications): Google, Uber, Tesla, Amazon, Mercedes-Benz, JD.COM, etc.

Examples of medical health (monitoring and diagnosis of medical health, intelligent medical equipment) products: Enlitic, Intuition, Carbon Cloud Intelligence, Cape, etc.

Examples of e-commerce retail (warehousing and logistics, intelligent shopping guide, customer service) products: Ali, JD.COM, Amazon.

Examples of financial products (intelligent investment, intelligent customer service, safety monitoring and financial supervision): Ant Financial, Bank of Communications, Dahua Co., Ltd. and kensho.

Examples of educational products (intelligent assessment, personalized counseling, children's company): learning classroom, Iflytek, Yunzhisheng.

First, there are many related patents.

Second, the application scenario is "earth" but just needed.

Third, there are not many fields to choose from.