Flashcards in Miscellaneous Deck (15):
What is the c( ) function short for?
What does the c( ) function or combine do?
It creates a new vector by combining a list of values
What can a vector's values be?
Numbers, strings, or any other type, as long as they are all the same type
What does R do if you mix different types?
R will convert all values to the same type (characters)
What does the plot(X, Y) function produce?
A scatterplot of Y vs X
What does the hist(X, Y) function produce?
A histogram of X
What are the three steps to creating a word cloud?
-First create a term document matrix
-Term frequencies are obtained
-Frequencies are passed to function wordcloud()
What are collections of documents with similar terms or values?
What are latent (=hidden) dimensions that describe the conceptual content in a collection of documents?
What is a collection of documents?
True or False: A document could address multiple topics, or no specific topic (from a certain topic collection)
True or False: Each document is assigned to exactly one text cluster.
What typically determines document assignment to exactly one cluster?
What identifies topics addressed by documents?