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Table 5 The time complexity of SGDCTH with baseline methods

From: Detecting fake reviewers in heterogeneous networks of buyers and sellers: a collaborative training-based spammer group algorithm

Method

Target product filtration

Construct graph

Feature representation learning

Candidate groups generation

Group purification and ranking (or classification)

Total of time complexity

GSDB

O (n)

Ă—

Ă—

O (n2)

O (n)

O (n2)

GSBC

Ă—

O (n3)

Ă—

O (n3)

O (n)

O (n3)

GroupStrainer

O (n2)

O (n2)

Ă—

O (n2)

Ă—

O (n2)

HoloScope

Ă—

O (n2)

Ă—

O (n log n)

Ă—

O (n2)

SGDCTH

O (n2)

O (n2)

O (n log n)

O (n2)

O (n)

O (n2)