Algorithm 2.

Quality for each document.

Require: LC: List of documents of a cluster

1: L2 ← ϕ

2: for all d ∈ LC do

3:  AD ← extractAuthors(d)

4:  index ← 0

5:  for all author ∈ AD do

6:   index ← index + qualityAuthor(author)

7:  end for

8:  L2 ← < d, index >

9: end for

10: L2 ← sort(L2)

11: return L2