Information presentation device, information presentation system, and information presentation method

An information presentation device comprising:

• an input unit that inputs a setting value for setting first sales information and second sales information different from the first sales information;
• an acquisition unit that acquires, on a person-by-person basis, a plurality of pieces of flow line information on a plurality of people moving in a shopping mall and a plurality of pieces of sales information indicating sales amounts of an item or of a service in the shopping mall purchased by the plurality of people during the move;
• a difference calculator that extracts first flow line information associated with the first sales information and second flow line information associated with the second sales information from the plurality of pieces of flow line information and the plurality of pieces of sales information and calculates difference flow line information indicating a difference between the first flow line information and the second flow line information;
• and
• a display unit that displays the difference flow line information.

An information presentation method comprising:

• causing an input unit to input a setting value for setting first sales information and second sales information different from the first sales information;
• causing an acquisition unit to acquire, on a person-by-person basis, a plurality of pieces of flow line information on a plurality of people moving in a facility and a plurality of pieces of sales information indicating sales amounts of an item or of a service in the facility purchased by the plurality of people during the move;
• causing a difference calculator to extract first flow line information associated with the first sales information and second flow line information associated with the second sales information from the plurality of pieces of flow line information and the plurality of pieces of sales information and calculate difference flow line information indicating a difference between the first flow line information and the second flow line information;
• and
• causing a display unit to display the difference flow line information.