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Data Mining: Classification and analysis

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Data Mining: Classification and analysis

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Data Mining :Classification and Analysis
Classification in the process of Data Mining It is the process of finding a model (or function) that describes and distinguishes data classes or concepts, for the purpose of being able to use the model to predict the class of objects whose class label is unknown. There are 3 models in which classification can be represented IF-THEN rules, A decision tree, Neural network.
Classificationof Data Mining Systems The kinds of databases mined The kinds of knowledge mined The kinds of techniques utilized The applications adapted
What is Cluster Analysis? Clustering analyzes data objects without consulting a known class label. Clustering can also facilitate taxonomy formation.
What is Outlier Mining ? A database may contain data objects that do not comply with the general behavior or model of the data. These data objects are outliers. The analysis of outlier data is referred to as outlier mining.
What is Evolution Analysis? Data evolution analysis describes and models regularities or trends for objects whose behavior changes over time.
What are Data Mining Task Primitives? A data mining task can be specified in the form of a data mining query, which is input to the data mining system. A data mining query is defined in terms of data mining task primitives.
Integration schemes of Data Base and Data Warehouse systems No coupling: No coupling means that a DM system will not utilize any function of a DB or DW system Loose coupling: Loose coupling means that a DM system will use some facilities of a DB or DW system, fetching data from a data repository managed by these systems, performing data mining, and then storing the mining results either in a file or in a designated place in a database or data warehouse.
Cont.. Semi tight coupling: Semi tight coupling means that besides linking a DM system to a DB/DW system, efficient implementations of a few essential data mining primitives (identified by the analysis of frequently encountered data mining functions) can be provided in the DB/DW system. Tight coupling: Tight coupling means that a DM system is smoothly integrated into the DB/DW system.
Some issues encountered in Data Mining Mining methodology and user interaction issues Mining different kinds of knowledge in databases Interactive mining of knowledge at multiple levels of abstraction Incorporation of background knowledge Data mining query languages and ad hoc data mining Presentation and visualization of data mining results Handling noisy or incomplete data Pattern evaluation—the interestingness problem
The performance of data mining system Efficiency and scalability of data mining algorithms Parallel, distributed, and incremental mining algorithms Issues relating to the diversity of database types Handling of relational and complex types of data Mining information from heterogeneous databases and global information systems
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Data Mining: Classification and analysis

  • 2. Classification in the process of Data Mining It is the process of finding a model (or function) that describes and distinguishes data classes or concepts, for the purpose of being able to use the model to predict the class of objects whose class label is unknown. There are 3 models in which classification can be represented IF-THEN rules, A decision tree, Neural network.
  • 3. Classificationof Data Mining Systems The kinds of databases mined The kinds of knowledge mined The kinds of techniques utilized The applications adapted
  • 4. What is Cluster Analysis? Clustering analyzes data objects without consulting a known class label. Clustering can also facilitate taxonomy formation.
  • 5. What is Outlier Mining ? A database may contain data objects that do not comply with the general behavior or model of the data. These data objects are outliers. The analysis of outlier data is referred to as outlier mining.
  • 6. What is Evolution Analysis? Data evolution analysis describes and models regularities or trends for objects whose behavior changes over time.
  • 7. What are Data Mining Task Primitives? A data mining task can be specified in the form of a data mining query, which is input to the data mining system. A data mining query is defined in terms of data mining task primitives.
  • 8. Integration schemes of Data Base and Data Warehouse systems No coupling: No coupling means that a DM system will not utilize any function of a DB or DW system Loose coupling: Loose coupling means that a DM system will use some facilities of a DB or DW system, fetching data from a data repository managed by these systems, performing data mining, and then storing the mining results either in a file or in a designated place in a database or data warehouse.
  • 9. Cont.. Semi tight coupling: Semi tight coupling means that besides linking a DM system to a DB/DW system, efficient implementations of a few essential data mining primitives (identified by the analysis of frequently encountered data mining functions) can be provided in the DB/DW system. Tight coupling: Tight coupling means that a DM system is smoothly integrated into the DB/DW system.
  • 10. Some issues encountered in Data Mining Mining methodology and user interaction issues Mining different kinds of knowledge in databases Interactive mining of knowledge at multiple levels of abstraction Incorporation of background knowledge Data mining query languages and ad hoc data mining Presentation and visualization of data mining results Handling noisy or incomplete data Pattern evaluation—the interestingness problem
  • 11. The performance of data mining system Efficiency and scalability of data mining algorithms Parallel, distributed, and incremental mining algorithms Issues relating to the diversity of database types Handling of relational and complex types of data Mining information from heterogeneous databases and global information systems
  • 12. Visit more self help tutorials Pick a tutorial of your choice and browse through it at your own pace. The tutorials section is free, self-guiding and will not involve any additional support. Visit us at www.dataminingtools.net