Sticker recommendation method and apparatus

A sticker recommendation apparatus, comprising:

• interface circuitry configured to receive a sticker recommendation request from a terminal device;
• and
• processing circuitry configured to
• determine a historical sticker set that includes a sticker previously sent by a user of the terminal device, and at least one recommendable sticker set not including the historical sticker set;
• determine a recommendation index for each of the at least one recommendable sticker set according to an emotion feature of the historical sticker set and an emotion feature of the respective recommendable sticker set, the emotion feature of the historical sticker set being based on emotion features extracted from stickers in the historical sticker set, and the emotion feature of each of the at least one recommendable sticker set being based on emotion features extracted from stickers in the respective recommendable sticker set;
• determine a corrected recommendation index of a specified sticker in the at least one recommendable sticker set based on an uncorrected recommendation index of the specified sticker, average usage times of the stickers in the historical sticker set by the user, a variance value of each element in an interest vector of the user, and a cosine similarity between an image style of the specified sticker and a corresponding image style of the each element in the interest vector of the user, each of the stickers in the historical sticker set having an image style such that the historical sticker set has at least one image style, and the each element in the interest vector of the user corresponding to historical usage in each of the at least one image style of the historical sticker set;
• send, via the interface circuitry, a sticker set recommendation for one or more of the at least one recommendable sticker set to the terminal device according to the determined recommendation index for each of the at least one recommendable sticker set;
• and
• send a specified sticker recommendation based on the determined corrected recommendation index.

A non-transitory computer-readable storage medium storing a program executable by at least one processor to perform:

• receiving a sticker recommendation request from a terminal device;
• determining a historical sticker set that includes a sticker previously sent by a user of the terminal device, and at least one recommendable sticker set not including the historical sticker set;
• determining a recommendation index for each of the at least one recommendable sticker set according to an emotion feature of the historical sticker set and an emotion feature of the respective recommendable sticker set, the emotion feature of the historical sticker set being based on emotion features extracted from stickers in the historical sticker set, and the emotion feature of each of the at least one recommendable sticker set being based on emotion features extracted from stickers in the respective recommendable sticker set;
• determining a corrected recommendation index of a specified sticker in the at least one recommendable sticker set based on an uncorrected recommendation index of the specified sticker, average usage times of the stickers in the historical sticker set by the user, a variance value of each element in an interest vector of the user, and a cosine similarity between an image style of the specified sticker and a corresponding image style of the each element in the interest vector of the user, each of the stickers in the historical sticker set having an image style such that the historical sticker set has at least one image style, and the each element in the interest vector of the user corresponding to historical usage in each of the at least one image style of the historical sticker set;
• sending a sticker set recommendation for one or more of the at least one recommendable sticker set to the terminal device according to the determined recommendation index for each of the at least one recommendable sticker set;
• and
• sending a specified sticker recommendation based on the determined corrected recommendation index.