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

Table 2

Notations for phase 1.

Notation	Description
M	Patient m
	Parameter
	A K-dimensional normal random variable
	Topic variable
	Latent topic (latent disease)
	Total number of latent topics
	A set of bigrams in a note
	Number of bigram results by
	Size of notes dictionary
	The probability of words appearing in topics of notes dictionary
	The probability of -th bigram appearing in k topic of notes dictionary,
	Measurement
	Number of measurement results by
	Size of measurement dictionary
	The probability of measurements appearing in the topics of measurement dictionary
	The probability of the -th measurement appearing in k topics of measurement dictionary