Tune a very important concept in the map interface.
For map products, the information around a certain geographic location is called POI .
point of information OR point of interest, any non-geographically meaningful point on the map (good to go around
eg shops, banks, gas stations
The significance of POI : When the user's knowledge of the geographic location and surrounding information is inaccurate, connect the user with a point of geographic significance and transform the next behavior.
POI label granularity
1. Mobile user perspective
Software Home
Top search box
Taking Baidu map as an example, enter the search box for more options, you can see that the POI is divided into eight categories: eating, drinking, accommodation, travel, banking, entertainment, life, attractions, shopping. To be more detailed, you can choose the category in the big category.
eg. Accommodations are available in hotel stars, and food and beverage options are available.
2. Developer platform perspective
Baidu map open platform-POI industry classification
This classification is very detailed, with a total of 17 first-level industries. In Gaode's open platform, the POI category is even divided into 20 major categories, and each major category has subdivisions of second and third levels. The POI classification of the developer platform is very detailed and rigorous. The key point is to be completely exhaustive and independent.
Through POI retrieval, map products are no longer just a tool. In addition to providing users with the basic functions of location query and destination navigation, they can fully rely on it;
Reference: https://www.jianshu.com/p/41732f3ac585
