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Table 1 Parameter interpretation in LDA model

From: Consumer health information needs in China – a case study of depression based on a Social Q&A community

α

Dirichlet proportions parameter of ϴ

β

Dirichlet proportions parameter of φ

Wd,n

The nth word in document d

Zd,n

The nth topic in document d

N

Number of words included in the document d

K

The number of topics

φk

Represents the kth topic - word distribution

ϴm

Represents the mth document - topic distribution