⟩ You have created a document term matrix of the data, treating every tweet as one document. Which of the following is correct, in regards to document term matrix? Removal of stopwords from the data will affect the dimensionality of data Normalization of words in the data will reduce the dimensionality of data Converting all the words in lowercase will not affect the dimensionality of the data A) Only 1 B) Only 2 C) Only 3 D) 1 and 2 E) 2 and 3 F) 1, 2 and 3
D) 1 and 2
Choices A and B are correct because stopword removal will decrease the number of features in the matrix, normalization of words will also reduce redundant features, and, converting all words to lowercase will also decrease the dimensionality.
