Survey on Keyword Extraction

Data Mining is mainly used for storing and retrieve needed information. Reading and summarizing the contents of large entries of text into a small set of topics is difficult and time consuming for a human, so much that it becomes nearly impossible to accomplish with limited manpower as the size of the information grows. As a result, automated systems for retrieving information from large storage place, we are using the Concepts of Keyword and Keyword Extraction. It plays a vital role in the Web Based searches and normal searches of document or any important files etc in any organization. Keyword means word used in a text search, or a word in a text document that is used in an index to best describe the contents of the document. A word or phrase submitted to a search engine in an effort to locate relevant document or websites. Keyword Extraction means extracting the keyword from the implicit queries of the user. Extracting Keywords from the document helps the user to browse in fast manner, where time consumption is reduced. Keyword Extraction widely used many places like organization, college database, mail server, group discussion and internet etc.