| 摘要 |
PROBLEM TO BE SOLVED: To provide an information retrieving device whose retrieval operation is easy by displaying data easy to see even when there are a large number of data by appropriately limiting contents to be displayed on a map screen and the number of keywords. SOLUTION: When selecting an instruction item to be displayed on the map, a control part 8 selects and displays the instruction item of the keyword and contents having a high utility index calculated from the number of times of utilization based on a utilization history on the map preferentially rather than the instruction item of the keyword and contents having a low utility index.
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