Abstract An information classification program includes the following: accepting a search keyword; retrieving, from multiple information items (111) posted by multiple users, a posted information item (111) including the accepted search keyword, each of the multiple posted information items (111) including at least either of a text information item (113) and an image information item (112), and acquiring posted information items (111) which are within a predetermined chronological range with respect to the posted information item (111) including the search keyword; and classifying, as image information items (112) related to the search keyword, some of image information items (112) included in the posted information items (111) that have been acquired, and performing first determination of, for each of the classified image information items (112), whether or not a user who posted an information item (111) including the classified image information item (112) took an action related to the search keyword. CD C co-) co , co S0 0 w 0 0 ~-j 0 0 -U U ) u) u ~~~~ <: C 0HWH o U)< < U0 <0 0 0i 0 U)f <L m 0 0 -j -... - i C) C) Q < w C: CD~~C CNCOI- L o r- 0 F C\CJ w-J 0- 0 F-- _F- LLF- 0 0IU 0 D CD L zUD ~ ~ H 5U Ed 0 0D < O = a_ co Cl) 0~~ 0 0 D0 =D~ H-: - = LL 05 Of CID WZ - L 0 _L 0D L WU)CI LLU H0 H0 LD < = a ~ 0 0 W0-HU) C) 0
Information classification program, information classification method, and information processing apparatus