∑ = • • = n i vi v I T E T w i Score I E Sim 1 1 ) ( ) ( { ) ( ) , ( I } ) ( ) ( 1 I T E T oi o I + จͷҐஔʹΑΔείΞ ೖྗ1จʼೖྗ10จ ཱࣗޠҰக E: ཁࣄྫʢ༻ྫʣ I : ೖྗهࣄ i: จͷ൪߸ w จಈࢺ͕Ұகͨ͠ ͱ͖ʹର͢ΔॏΈ :
ˠ ̏ͭ(w, r, w’)ʹରͯ͠ ૬ޓใྔΛܭࢉ ྨࣅ༻ྫ1จઅʹରͯ͠ ྨࣅͷ্Ґ3ҐΛରԠ͚Δ ʢӡస͢Δ, ͕, ࢲʣ r ɿ w ͱw’ Λ݁Ϳॿࢺ ∑ ∑ ∑ ∈ ∈ ∩ ∈ + + = ) ( ) ' , ( 2 ) ( ) ' , ( 1 ) ( ) ( ) ' , ( 2 1 2 1 2 1 2 1 ' , , ( ) ' , , ( )) ' , , ( ) ' , , ( ( ) , ( w T w r w T w r w T w T w r w r w I w r w I w r w I w r w I w w ) Sim I(w1, r, w’)͕ਖ਼ͱͳΔΑ͏ͳ(r, w’)ͷू߹
จઅؒͷܨ͕Γྑ͍͔Ͳ͏͔ • ˓ɿ̍จˠ̍จˠ̎จ ʷɿ̍จˠ10จˠ̎จ ⎩ ⎨ ⎧ = rank w N i / 1 5 . 0 max ) ( ֨ใ͔ݻ༗දݱλά͕Ұக ͦΕҎ֎ 1 ) ( ) ( 1 ) , ( 1 1 + − = − − i i i i w loc w loc w w E