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Table 2 Meaning of symbols used in TI-BETM

From: Topic tracking model for analyzing student-generated posts in SPOC discussion forums

Symbols Description Symbols Description
M Number of posts α Dirichlet prior of θ
N Number of words β Dirichlet prior of φ
K Number of topics γ Dirichlet prior of π
z Topic index η Dirichlet prior of ψ
e Emotion index λ Dirichlet prior of ζ
b Behavior index {TP, RE, QU, CP} θ Distribution of post-topic
w Word index φ Distribution of topic-word
t Time index π Bernoulli distribution of topic-emotion
ζ Distribution of topic-time ψ Distribution of topic-behavior