Predictive Analytics II: Text, Web, and Social Media Analytics - Text Mining Process
4 important questions on Predictive Analytics II: Text, Web, and Social Media Analytics - Text Mining Process
What are the main steps in the text mining process?
2) Create the Term-Document Matrix
3) Extract Knowledge
What is the reasons for normalizing word frequencies? What are the common methods for normalizing word frequencies?
Common methods for normalizing: log frequencies, binary frequencies, inverse document frequencies
What is SVD? How is it used in text mining?
it reduces the overall dimensionality of the input matrix. Goal: have a more manageable matrix
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What are the main knowledge extraction methods from corpus?
Clustering
Association
Trend Analysis
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