TESI DOCTORAL - La Salle

E.3. Corel data set
φ (NMI)
1
0.8
0.6
0.4
0.2
0
text
λ rb−cos−i2
c
E
CSPA
EAC
HGPA
MCLA
ALSAD
KMSAD
SLSAD
(a) Modality 1
φ (NMI)
1
0.8
0.6
0.4
0.2
0
image
λ rb−cos−i2
c
E
CSPA
EAC
HGPA
MCLA
ALSAD
KMSAD
SLSAD
(b) Modality 2
φ (NMI)
1
0.8
0.6
0.4
0.2
0
text+image
λ rb−cos−i2
c
E
CSPA
EAC
HGPA
MCLA
ALSAD
KMSAD
SLSAD
(c) Multimodal
φ (NMI)
1
0.8
0.6
0.4
0.2
0
λ c rb−cos−i2
E
CSPA
EAC
HGPA
MCLA
ALSAD
KMSAD
SLSAD
(d) Intermodal
Figure E.20: φ (NMI) boxplots of the unimodal, multimodal and intermodal consensus clustering
solutions using the rb-cos-i2 algorithm on the Corel data set.
λ final
c , which is again highlighted by means of a vertical green dashed line.
The performance of the self-refining procedure is equally satisfying when conducted on
the cluster ensembles created by means of the three remaining clustering algorithms, as
figures E.22, E.23 and E.24 depict. However, the selection accuracy of the supraconsensus
function is somewhat inconsistent, as already observed on the previous data sets.
φ (NMI)
CSPA agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
λ 10
c
λ 15
c
λ 20
c
(a) CSPA
φ (NMI)
λ 30
c
λ 40
c
λ 50
c
λ 75
c
φ (NMI)
1
0.8
0.6
0.4
0.2
0
EAC agglo−cos−upgma
E λc
λ 2 c
λ 5 c
ALSAD agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
λ 10
c
λ 15
c
λ 20
c
λ 30
c
(e) ALSAD
λ 40
c
λ 10
c
λ 15
c
λ 20
c
(b) EAC
λ 50
c
λ 75
c
φ (NMI)
λ 30
c
λ 40
c
λ 50
c
λ 75
c
φ (NMI)
HGPA agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
KMSAD agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
λ 10
c
λ 15
c
λ 20
c
λ 30
c
(f) KMSAD
λ 40
c
λ 10
c
λ 15
c
λ 20
c
(c) HGPA
λ 50
c
λ 75
c
φ (NMI)
λ 30
c
λ 40
c
λ 50
c
λ 75
c
φ (NMI)
MCLA agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
SLSAD agglo−cos−upgma
1
0.8
0.6
0.4
0.2
0
E λc
λ 2 c
λ 5 c
λ 10
c
λ 15
c
λ 20
c
λ 30
c
(g) SLSAD
λ 10
c
λ 15
c
λ 20
c
(d) MCLA
Figure E.21: φ (NMI) boxplots of the self-refined intermodal consensus clustering solutions
using the agglo-cos-upgma algorithm on the Corel data set.
370
λ 40
c
λ 50
c
λ 75
c
λ 30
c
λ 40
c
λ 50
c
λ 75
c