What are the pros and cons of data collection? What are the two types of knowledge? Give examples of data mining.

Lecture Notes Monday, March 283:44 PM • Pros and cons of data collection ○ Pros:  EX: Kroger's reward card for discounts ○ Cons:  EX: lots of knowledge is collected about user --> ads targeted to you specifically • Where is the data? ○ Data can be altered or can be wrong ○ Security and privacy issues on data • Information Hierarchy ○ Data  Difficult to not be in any database (social media, personal technology, etc.)  3 Types □ Unstructured □ Semi-structured □ Structured ○ Information  Processed data □ Organized, selected, analyzed, mined  Meaningful to recipients (companies, mostly) ○ K