دانلود رایگان پاورپوینت متن کاوی (انگلیسی)

Text Mining
Representing Text Documents for Data Mining
Stop Words and Stemming
Representing Text Documents: Constructing a Vector Space Model
Normalising the Weights
Measuring the Distance Between Two Vectors
Measuring the Performance of a Text Classifier
Hypertext Categorisation
Hypertext Classification versus Text Classification

Representing Text Documents for Data Mining
bag-of-words representation Example：(1) Tony likes to watch movies. John likes movies too.(2) Tony also likes to watch football games.Based on these two text documents, a list is constructed as follows：{“Tony”,”likes”,”to”,”watch”,”movies”,”also”,”football”, ”games”,”John”,”too”}
local dictionary
global dictionary