| 摘要 |
PROBLEM TO BE SOLVED: To use a smaller amount of calculation to retrieve contents, which conform to user taste information, or contents, which are similar to designated contents and to present the retrieved contents to the user. SOLUTION: The items (titles, artist names, categories, review texts, tempos, beats, rhythms and so on) of music metadata are classified into the respective ones of cluster layers (first to n-th layers) and the actual information of the items are classified (clustered) into the respective ones of clusters provided in the cluster layers. Then, cluster information, which comprises cluster IDs (such as CL11 in Fig.2) of the clusters into which the actual information of the items of the metadata are classified, as information indicative of the features of the music, instead of the metadata, is complied into a database. The present invention can be applied, for example, to a server of websites, in which the purchases of contents such as music data are recommended, and to video recorders in which timed recordings of television programs are recommended. COPYRIGHT: (C)2007,JPO&INPIT
|
