Progressive Framework ndex:0123456 o Return Results: n2o n5 n1o Top3-Query: Esrajit To:(no O)(n, 1) 0 1:(no1)(n10)(n210) S[15] 2t6 11 (n211)#21 a[1,1]e[2,2] 6) 1i34 r5,5]r …(20 13 a 3,3](t4,4]a (n56)…(n106, 18 25 19 26 D:1 D:2|D3D:4 D:5 D:6 2/2/2021 Topk Search(@ ICD E2013Progressive Framework  Return Results:n20 n5 n10 Top3-Query: ε s r a j i t T0 : (n0 0) (n1 1) 2/2/2021 TopkSearch @ ICDE2013 25/42 index: 0 1 2 3 4 5 6 T1 : (n0 1) (n1 0) (n21 0) (n21 1) (n1 1) ……(n20 6)…… T2 : …(n5 6)… (n10 6)…