| 摘要 |
In order to detect similar data from a great deal of data at high speed, a similarity detecting apparatus includes a random number generating unit 3 which calculates random number data based on a parameter list, a table managing unit 5 which calculates a plurality of key calculation functions based on the random number data, calculates a plurality of tables based on input data, and calculates a candidate data list based on a query shown by a search condition, and a data processing unit 6 which calculates search result data from the candidacy data list to satisfy the condition shown a search condition. Each table is calculated for a value corresponding to a key to show a data list of data in which the data substituted into a key calculation function is equal to the key. A candidate data list contains a plurality of search data list and a search data list corresponding to the table shows the value corresponding to a query value obtained by substituting the query into the key calculation function. |
