3. The information processing device according to claim 1 , wherein: the keyword extraction unit is configured to specify sentences in the textual information each of which includes at least one keyword on the basis of the keywords stored in the keyword storage unit, delete sentences each of which does not include any keywords, and extract the keywords from the specified sentences; the schedule information creation unit is configured to extract the schedule information based on the extracted keywords and category of the extracted keywords; the keyword extraction unit is configured to re-extract the keywords from the sentences which include correct schedule information; and the schedule information creation unit is configured to create the schedule information based on the re-extracted keywords and category of the re-extracted keywords.
1. An information processing device comprising: a memory, one or more processors coupled to said memory for executing: a communication unit configured to transmit textual information; a schedule storage unit configured to store schedule information; a keyword storage unit configured to store multiple keywords that are classified into multiple categories; a keyword extraction unit configured to extract keywords from the textual information transmitted by the communication unit on the basis of the keywords stored in the keyword storage unit, and specify one category corresponding the extracted keywords when extracting a keyword which was classified into a plurality of categories based on a position thereof and relationships to other words in the text information; a schedule information creation unit configured to create new schedule information or revised schedule information which causes schedule information stored in the schedule storage unit to be updated, based on the keywords extracted by the keyword extraction unit and the categories of the extracted keywords; and a schedule updating unit configured to store the new schedule information into the schedule storage unit, and update the schedule information stored in the schedule storage unit with the revised schedule information, wherein the schedule information creation unit is configured to: determine whether the extracted keywords include a keyword classified to a category for revising the schedule, indicating completion of a job, or settlement of existing schedule information, and create the new schedule information including date and content when determining there is no keyword classified to the category for revising the schedule, indicating completion of a job, or settlement of existing schedule information; and create schedule information for updating the existing schedule information when determining there is a keyword classified to the category for revising the schedule, indicating completion of a job, or settlement of existing schedule information, and wherein the schedule updating unit is configured to: compare the new schedule information with the schedule information stored in the schedule storage unit to find a similar schedule information which is similar to the new schedule information, update the found similar schedule information with the new schedule information when finding the similar schedule information, and store the new schedule information in the schedule information storing unit when not finding the similar schedule information; and compare the schedule information for modifying and the schedule information stored in the schedule storage unit to find a similar schedule information which is similar to the schedule information for modifying, update the found similar schedule information with the schedule information for modifying when finding the similar schedule information stored in the schedule storage unit, and store the schedule information for modifying in the schedule storage unit when not finding the similar schedule information in the schedule storage unit.