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Let qq be the original query vector, D_R=\{P_1,…,P_n \}DR={P1,…,Pn} be the set of positive document vectors, and D_N=\{N_1,…,N_m\}DN={N1,…,Nm} be the set of negative document vectors. Let q_1q1 be the expanded query vector after applying Rocchio on D_RDR and D_NDN with positive parameter values \alphaα, \betaβ, and \gammaγ. Let q_2q2 be the expanded query vector after applying Rocchio on D_RDR and D_NDN with the same values for \alphaα, \betaβ, but \gammaγ being set to zero. Which of the following is correct?
ByAdmin9. Question 9 Let qq be the original query vector, D_R=\{P_1,…,P_n \}DR={P1,…,Pn} be the set of positive document vectors, and D_N=\{N_1,…,N_m\}DN={N1,…,Nm} be the set of negative document vectors. Let q_1q1…
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