Constructing Topic Models of Internet of Things for Information Processing

Algorithm 1

Record entity topic model (RETM).

(1) foreach topic-entity pair (𝑒,𝑧) do

(2)   Draw topic-entity distribution 𝜑_𝑒,𝑧∼Dir(𝛽)

(3) endfor

(4) foreach record 𝑑 do

(5)   Draw entity distribution 𝛿_𝑑∼Dir(𝛼₁,𝐸_𝑑)

(6)   Draw local topic distribution 𝜃_𝑑∼Dir(𝛼₀)

(7)   Draw background distribution 𝜃_𝑑^′∼Dir(𝛼₀)

(8)   foreach word 𝑖∈{1,2,…,𝑁_𝑑} do

(9)    Draw 𝑡_𝑖∼Bernoulli(𝑝_𝑧)

(10)     Draw 𝑒_𝑑,𝑖∼Multinomial(𝛿_𝑑)

(11)    if  𝑡_𝑖=1  then

(12)      Draw 𝑧_𝑑,𝑖∼Multinomial(𝜃_𝑑)

(13)      Draw 𝑤_𝑑,𝑖∼Multinomial(𝜑_{𝑒𝑑,𝑖,𝑧𝑑,𝑖})

(14)    else  Draw 𝑧^′_𝑑,𝑖∼Multinomial(𝜃_𝑑^′)

(15)      Draw 𝑤_𝑑,𝑖∼Multinomial(𝜑_{𝑒𝑑,𝑖,𝑧′𝑑,𝑖})

(16)    endif

(17)   endfor

(18)  endfor