tailieunhanh - Collective Intelligence in Action phần 4

Folksonomy từ kết hợp từ dân gian và phân loại. Blogger Thomas Vander Wal được với người đặt ra thuật ngữ. Folksonomies cho phép người dùng tìm thấy những người dùng khác có cùng sở thích. Một người sử dụng có thể tiếp cận những nội dung mới bằng | Summary 103 Simpo PDF Merge and Split Unregistered Version - http item 3 item_id oS item_type_id name int unsigned 10 int unsigned 10 varchar 50 1----item_type_id item_type_id item type id name description int unsigned 10 varchar 50 varchar 200 Figure Adding item_type to the item table Based on how the term vectors for the content types are extracted we can define content types SimpleContentType and CompositeContentType shown in figure . Figure Classifying content types Both the simple and the composite content types are described in table . Table Content type categorization Content Type Description Examples Simple content type Items of this content type aren t dependent on other items . Articles photos video blogs polls products Composite content type Items of this content type are dependent on other items. Questions with their associated set of answers Categorized terms with an associated set of items to describe the term Boards with associated group of messages Categories of items Note that for certain content types such as questions and answers answers are fully contained within the context of the question. You typically won t show the answer without the context of the question. The same is true for a list of items that a user may have saved together. The term vectors for CompositeContentType are obtained by combining the term vectors for each of their children items. The MetaDataVector for a CompositeContentType is obtained by combining the MetaDataVector for each of its children items. Summary Content is the foundation for building applications. It s one of the main reasons why users come to your application. There are a number of different types of content 104 Chapter 4 Extracting intelligence from content Simpo PDF Merge and Split Unregistered Version - http such as articles photos video blogs wikis classification terms polls lists and so forth. These can be created professionally created by users .