In the official website of China National Intellectual Property Administration, which of the following services are provided under the "data" category of the navigation bar?

1. Search function: China Patent Intellectual Property Network has a batch of domestic and foreign patent information, which can be directly searched.

2. Machine translation function: In order to meet the needs of some users, China Patent Intellectual Property Network has developed a machine translation function to translate English patent contents.

3. Early warning analysis function: This is a major feature function of China Patent Intellectual Property Network, which gathers information of various patent data and can be used for deep mining.

4. Personalized function: This function is designed for users. You can create your own special question bank, and you can also conduct navigation retrieval and patent management.