A Time-Critical Topic Model for Predicting the Survival Time of Sepsis Patients

Table 1

Notations for LDA.

Notation	Description
	Parameter which is a K-vector
	Total number of latent topics
	A K-dimensional Dirichlet random variable
	Topic variable
	The probability of words appearing in topics of dictionary
	A set of words in a document
	A document which is a sequence of words
	A corpus which is a collection of documents