Friend recommendation method and system orented toward subway passengers

A friend recommendation system oriented towards subway passengers, comprising at least one processor and a non-transitory computer-readable storage medium storing program instructions executable by the at least one processor, wherein the program instructions comprise an acquisition module, a preprocessing module, an estimation module, a calculation module, a matching module, and a recommendation module;

• wherein the acquisition module is configured for obtaining source data associated with subway station passengers and subway operation;
• the preprocessing module is configured for preprocessing the obtained source data;
• the estimation module is configured for estimating travel paths of the subway passengers based on the preprocessed source data;
• the calculation module is configured for calculating a detailed train operation timetable:
• based on a subway train timetable and train departure intervals;
• the matching module is configured for matching each of the subway passengers to a specific train based on the estimated travel paths of the subway passengers and the calculated train operation timetable;
• and
• the recommendation module is configured for extracting and measuring interactions between the subway passengers based on the matched subway passengers and specific trains, and according making a friend recommendation.