BRIEF DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the present invention and the advantage thereof, reference is now made to the following description taken in conjunction with the accompanying drawings.
FIG. 1 shows an information processing system according to an embodiment of the present invention.
FIG. 2 is a flowchart of processing steps performed by a compound extraction device to extract a compound according to an embodiment of the present invention.
FIG. 3 shows sample appearing frequencies of the word “bird” as time series data.
FIG. 4 shows sample appearing frequencies of the word “flu” as time series data.
FIG. 5 shows sample appearing frequencies of the word “problem” as time series data.
FIG. 6 shows sample appearing frequencies of the phrase “train explosion accident” as time series data
FIG. 7 shows sample appearing frequencies of the word “train” as time series data.
FIG. 8 shows sample appearing frequencies of the word “explosion” as time series data.
FIG. 9 shows sample appearing frequencies of the word “accident” as time series data.
FIG. 10 is a flowchart of processing steps performed by a text retrieval device to retrieve texts according to an embodiment of the present invention.
FIG. 11 shows a sample display for retrieval results outputted by a search section according to an embodiment of the present invention.
FIG. 12 shows an information processing device according to an embodiment of the present invention.