Computer-implemented method for providing content in accordance with emotional state that user is to reach

A device comprising:

• a memory that stores a program;
• and
• a processor, when executing the program stored in the memory, that performs operations including:
• receiving, from a user device, a user ID for specifying a user, a target emotional state value representing a target emotional state that the user reaches, and a target time indicating a time when the user reaches the target emotional state;
• acquiring personal physiological rhythm data of the user associated with the user ID from a data storage, the personal physiological rhythm data including a plurality of emotional state values representing emotional states of the user at different times;
• acquiring a present time;
• determining a present emotional state value representing a present emotional state of the user, the present emotional state value being an emotional state value selected from the plurality of emotional state values and associated with the present time;
• calculating a difference value between the present emotional state value and the target emotional state value;
• estimating, based on the personal physiological rhythm data of the user, a spontaneous variation indicating a change in an emotional state value of the user during a period from the present time to the target time without providing a content;
• compensating the difference value by the spontaneous variation;
• selecting, from a plurality of contents registered in a content database, at least one content that causes the emotional state value of the user to change by the compensated difference value;
• and
• providing the selected at least one content to the user device.

A non-transitory recording medium that stores a program causing a computer to perform operations comprising:

• receiving, from a user device, a user ID for specifying a user, a target emotional state value representing a target emotional state that the user reaches, and a target time indicating a time when the user reaches the target emotional state;
• acquiring personal physiological rhythm data of the user associated with the user ID from a data storage, the personal physiological rhythm data including a plurality of emotional state values representing emotional states of the user at different times;
• acquiring a present time;
• determining a present emotional state value representing a present emotional state of the user, the present emotional state value being an emotional state value selected from the plurality of emotional state values and associated with the present time;
• calculating a difference value between the present emotional state value and the target emotional state value;
• estimating, based on the personal physiological rhythm data of the user, a spontaneous variation indicating a change in an emotional state value of the user during a period from the present time to the target time without providing a content;
• compensating the difference value by the spontaneous variation;
• selecting, from a plurality of contents registered in a content database, at least one content that causes the emotional state value of the user to change by the compensated difference value;
• and
• providing the selected at least one content to the user device.