Non-transitory computer-readable medium, information classification method, and information processing apparatus

1. A non-transitory computer-readable medium storing a program causing a computer to execute a process, the process comprising:

accepting a search keyword;

retrieving, from a plurality of information items posted by a plurality of users, a posted information item including the accepted search keyword, each of the plurality of posted information items including at least either of a text information item and an image information item, and acquiring posted information items which are within a predetermined chronological range with respect to the posted information item including the search keyword;

classifying, as image information items related to the search keyword, some of image information items included in the posted information items that have been acquired, and performing first determination of, for each of the classified image information items, whether or not a user who posted an information item including the classified image information item took an action related to the search keyword by comparing each of the classified image information items to an image classification model, where each first determination for one of the classified image information items makes the determination by examining a plurality of the classified image information items; and

determining whether the image classification model matches the classified image information item, wherein if the image classification model matches the classified image information item, it is determined that the user took an action that includes posting the information item.

2. The medium according to claim 1 , wherein, in the acquiring, a posted information item including the search keyword is retrieved from the plurality of posted information items, and, among other posted information items of a user who posted the information item including the search keyword, posted information items that are within a predetermined chronological range with respect to the posted information item including the search keyword are acquired.

3. The medium according to claim 1 , wherein, in the classifying and performing first determination, text information items included in the posted information items that have been acquired are classified, and, for each of the classified text information items, whether or not a user who posted an information item including the classified text information item took the action related to the search keyword is determined.

4. The medium according to claim 2 , wherein, in the classifying and performing first determination, text information items included in the posted information items that have been acquired are classified, and, for each of the classified text information items, whether or not a user who posted an information item including the classified text information item took the action related to the search keyword is determined.

5. The medium according to claim 1 , the process further comprising classifying text information items included in the posted information items that have been acquired, and, performing second determination of, for each of the classified text information items, whether the content of a posted information item including the classified text information item is favorable or unfavorable.

6. The medium according to claim 2 , the process further comprising classifying text information items included in the posted information items that have been acquired, and, performing second determination of, for each of the classified text information items, whether the content of a posted information item including the classified text information item is favorable or unfavorable.

7. The medium according to claim 3 , the process further comprising classifying text information items included in the posted information items that have been acquired, and, performing second determination of, for each of the classified text information items, whether the content of a posted information item including the classified text information item is favorable or unfavorable.

8. The medium according to claim 4 , the process further comprising classifying text information items included in the posted information items that have been acquired, and, performing second determination of, for each of the classified text information items, whether the content of a posted information item including the classified text information item is favorable or unfavorable.

9. The medium according to claim 5 , wherein, in the classifying and performing second determination, image information items included in the posted information items that have been acquired are classified, and, for each of the classified image information items, whether the content of a posted information item including the classified image information item is favorable or unfavorable is determined.

10. The medium according to claim 6 , wherein, in the classifying and performing second determination, image information items included in the posted information items that have been acquired are classified, and, for each of the classified image information items, whether the content of a posted information item including the classified image information item is favorable or unfavorable is determined.

11. The medium according to claim 7 , wherein, in the classifying and performing second determination, image information items included in the posted information items that have been acquired are classified, and, for each of the classified image information items, whether the content of a posted information item including the classified image information item is favorable or unfavorable is determined.

12. The medium according to claim 8 , wherein, in the classifying and performing second determination, image information items included in the posted information items that have been acquired are classified, and, for each of the classified image information items, whether the content of a posted information item including the classified image information item is favorable or unfavorable is determined.

13. An information classification method comprising:

accepting a search keyword;

retrieving, from a plurality of information items posted by a plurality of users, a posted information item including the accepted search keyword, each of the plurality of posted information items including at least either of a text information item and an image information item, and acquiring posted information items which are within a predetermined chronological range with respect to the posted information item including the search keyword;

classifying, as image information items related to the search keyword, some of image information items included in the posted information items that have been acquired, and performing first determination of, for each of the classified image information items, whether or not a user who posted an information item including the classified image information item took an action related to the search keyword by comparing each of the classified image information items to an image classification model, where each first determination for one of the classified image information items makes the determination by examining a plurality of the classified image information items; and

determining whether the image classification model matches the classified image information item, wherein if the image classification model matches the classified image information item, it is determined that the user took an action that includes posting the information item.

14. An information processing apparatus comprising:

a processor and a memory, the memory storing a processor executable program, the processor executable program being configured to:

accept a search keyword;

retrieve, from a plurality of information items posted by a plurality of users, a posted information item including the search keyword accepted by the accepting unit, each of the plurality of posted information items including at least either of a text information item and an image information item, and that acquires posted information items which are within a predetermined chronological range with respect to the posted information item including the search keyword;

classifies, as image information items related to the search keyword, some of image information items included in the posted information items acquired by the acquisition unit, and that performs first determination of, for each of the classified image information items, whether or not a user who posted an information item including the classified image information item took an action related to the search keyword by comparing each of the classified image information items to an image classification model, where each first determination for one of the classified image information items makes the determination by examining a plurality of the classified image information items; and

determining whether the image classification model matches the classified image information item, wherein if the image classification model matches the classified image information item, it is determined that the user took an action that includes posting the information item.