| 摘要 |
PROBLEM TO BE SOLVED: To provide a retrieval device, a retrieval method and a program capable of enhancing retrieval accuracy while suppressing reduction in search speed.SOLUTION: A retrieval device includes an acquisition unit, a division unit, an extraction unit, a calculation unit, and a retrieval unit. The acquisition unit acquires a plurality of first point sequences. The division unit divides each of the plurality of first point sequences into a plurality of second point sequences. The extraction unit extracts the feature quantity of each of the plurality of second point sequences. The calculation unit calculates a distance between the plurality of first point sequences on the basis of an optimal path between the second point sequences belonging to each of the plurality of first point sequences. The retrieval unit retrieves data corresponding to the plurality of first point sequences using the distance. |
