1. A computer program product for keyword searching, the computer program product comprising: a non-transitory computer readable storage medium and program instructions stored on the non-transitory computer readable storage medium, the program instructions comprising: program instructions to collect user information associated with a keyword search, wherein the user information comprises object search information, holding time information, and selecting time information, wherein the selecting time information comprises information associated with a section of a document highlighted by a user when viewing the document; program instructions to store the collected user information associated with the keyword search in a memory; program instructions to receive an indication of a search of content for at least one keyword; program instructions to determine whether the at least one keyword is associated with the collected user information associated with the keyword search in the memory; and program instructions to, responsive to determining that the at least one keyword is associated with the collected user information associated with the keyword search in the memory, calculate a rank for the at least one keyword.
1. A computer program product for keyword searching, the computer program product comprising: a non-transitory computer readable storage medium and program instructions stored on the non-transitory computer readable storage medium, the program instructions comprising: program instructions to collect user information associated with a keyword search, wherein the user information comprises object search information, holding time information, and selecting time information, wherein the selecting time information comprises information associated with a section of a document highlighted by a user when viewing the document; program instructions to store the collected user information associated with the keyword search in a memory; program instructions to receive an indication of a search of content for at least one keyword; program instructions to determine whether the at least one keyword is associated with the collected user information associated with the keyword search in the memory; and program instructions to, responsive to determining that the at least one keyword is associated with the collected user information associated with the keyword search in the memory, calculate a rank for the at least one keyword. 3. The computer program product of claim 1 , further comprising: program instructions to write the stored collected user information associated with the keyword search in the memory to a hard disk at a predetermined time interval.