Online Analytical Mining for Web Access Patterns - Advanced Topics in Database Research - page 300

following categories: (1) web content mining, (2) web structure mining, and (3) web usage
mining. The taxonomy of web mining is depicted in Figure 2.
Briefl y, web content mining is the process of extracting knowledge from the contents of
documents or their descriptions. Web structure mining is the process of inferring knowledge
and links between references and referents in the web. Finally, web usage mining is the
process of extracting interesting patterns in web server logs (Cooley, Mobasher & Srivastava,
1999). Alternatively, web mining can be classifi ed into web content mining and web usage
mining, because web structures can be treated as a part of web contents mining.

Frame Model Metadata
A frame model is an object-oriented-like database that structures an application domain
into classes and its data into relational tables. These classes are organized via generalization,
aggregation and user-defi ned relationships. The frame model is signifi cant as it consists of

Figure 3: The logical schema of the frame model in class format

Header Class {
Class_name
Parents
Operation
Class_type
}

// an unique name in all system
// a list of superclass names
// program call for operations
// active or static class

Attribute Class {
Attributes_name
Class_name
Method_name
Attributes_type
Association attribute
Default_value
Cardinality
Description
}

// an attribute in this class
// reference to header class
// a method in this class
// attribute data type //

// pointer to another class
// predefi ned value
// single or multi-valued
// description of the attributes

// attribute data type

Method Class {
Method_name
Class_name
Parameters
Method_type
Condition
Action
}

// a method component in this class
// reference to header class
// number of arguments for the method
// return type of method
// the rule conditions
// the rule actions

Constraint Class {
Constraint_name Constraint _name

// a constraint component of this class
// reference the header class
// constraint method name
// number of argument for the method
// the class name of method owner
// triggered event: create update or delete
// method action time: before or after
// the method action timer

Constraint
Class_name
Method_name
Parameters
Ownership
Event
Sequence
Timing