| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a time-series pattern finding apparatus and its method capable of suitably performing the discretization of numerical data in accordance with the features of time-series data without requiring particular background knowledge. <P>SOLUTION: The time-series pattern finding apparatus includes: a time-series data extraction part for extracting time-series data from a time-series data storage part; an item extraction part for extracting each discrete item from the time-series data, a candidate generation part for generating a plurality of candidate time-series patterns by performing expansion based on the discrete items; a candidate extraction part for extracting one candidate time-series pattern from the plurality of candidate time-series patterns; a candidate evaluation part for calculating a first evaluation value of the candidate time-series pattern; a discretization evaluation part for evaluating whether the plurality of numerical items are to be discretized or not on the basis of the first evaluation value; and a numerical item discretization part for generating a plurality of discrete items by discretizing the plurality of numerical items evaluated as items to be discretized. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
