Question

What is data preprocessing phases for data mining?

Answer 1

Data preprocessing : - it is a datamining technique which involves transforming raw data into an understandable format. .




1. World Wide Web is a huge repository of web pages and links. It provides abundance of information for the Internet users.




2. The growth of web is tremendous as approximately one million pages are added daily. Users' accesses are recorded in web logs. Because of the tremendous usage of web, the web log files are growing at a faster rate and the size is becoming huge. 

Answer 2

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Data preprocessing is a data mining technique that involves transforming raw data into an understandable format. Real-world data is often incomplete, inconsistent, and/or lacking in certain behaviors or trends, and is likely to contain many errors. Data preprocessing is a proven method of resolving such issues.