Why would you recommend me THAT?

R ≈ UM

R ≈ UM

K

U

Pα θ φz r

β

Convex combination of topics proportions and movie proportions within topic

φ3φ2

φ1

User

?

P(rel|usr,vid) ≈ P(cons|usr,vid) = {1,0}

P(cons|pos,evi,rel)P(pos|rel)P(evi|usr,vid)P(rel|usr,vid,obv-ctxt,unobv-ctxt)

PositionTheir final decision Evidence

The recommender

P(cons|pos,evi,rel)P(pos|rel)P(evi|usr,vid)P(rel|usr,vid,obv-ctxt,unobv-ctxt)

TakeRate = #plays / #presentations

P(cons|...) = {1,?}

N

NP

P

N

?P

??

??

N

?

?

?? ??

?

?

?P

P

?

?P

??

??

?

?

?

?? ??

?

P(cons|pos,evi,rel)P(pos|rel)P(evi|usr,vid)P(rel|usr,vid,obv-ctxt,unobv-ctxt)

Can’t do anything about this bit

RU

M

u1 u2 u3 u4

m1m2m3m4

Tri,j,1ri,j,2

ri,j,3

t1 t2 t3

P(cons|pos,evi,rel)P(pos|rel)P(evi|rel)P(rel|usr,vid,obv-ctxt,unobv-ctxt)

KickAssLadies

Sci-Fi

Exciting

Super Heros

Netflix Original

Stars: Krysten Ritter

Detective Show

R’U

M u1 u2 u3 u4

m1m2m3m4

ri,j

+ ≠

P( | )

itm

usr

posevi con

rel

ctx