What is Text Mining? What are the application areas? What are the challenges? What are the tools?. Prelude. Amount of information is growing exponentially Majority of Information is stored in text documents : journals , web pages , emails, reports, memos, social networks...
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What is Text Mining?What are the application areas?
What are the challenges?
What are the tools?
Need to automatically analyze, summarize text
genuinely new information
The discovery by computer of
by automatically extracting information from a usually large amount of different
Deals with structured numeric data
Typically in a data warehouse
“The objective of Text Mining is to exploit information contained in textual documents in various ways, including …discovery of patterns and trends in data, associations among entities, predictive rules, etc.”
“Another way to view text data mining is as a process of exploratory data analysis that leads to heretofore unknown information, or to answers for questions for which the answer is not currently known.”
Is this easy?
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N-gram here concerns words, in other contexts it is used for characters!
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