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Table 1 Symbols and notations

From: Prediction and risk stratification from hospital discharge records based on Hierarchical sLDA

Symbols

Notations

\(1 \le d \le D\)

HDRs index

\(f_{1:F}\)

Patient features

\(v_{1:N}\)

Patient feature-value pairs

\(1 \le k \le K\)

Topic index

\(\pi _{k}\)

Topic-feature multinomials of feature f, \(\pi _{k}\) is F-dimensional vector

\(\beta _{k}\)

Topic-value multinomials of feature-value v, \(\beta _{k}\) is N-dimensional vector

\(\alpha\)

K-dimensional Dirichlet parameter vector

\(\theta\)

K-dimensional topic proportions

\(r_{1:N}\)

Topic assignments

y

Response variables

\(\eta _{1:C}\)

Class coefficients