Graphics Reference
In-Depth Information
Figure
.
.
Non-metric MDS of Shakespearean keywords
In practice, the number of dimensions necessary for an informative solution is
oten investigated using a plot of STRESS against number of dimensions (scree plot).
his is shown in Fig.
.
for the Shakespeare plays and indicates that three or more
dimensions may have been preferable. However, then there is the eternal problem of
displaying the configuration in just two dimensions.
Although not oten carried out in practice, it is possible to investigate the MDS
analyses further bylooking at outlying orill-fitting points.Figure
.
showsthe Shep-
ard plot of d
rs
and d
rs
against δ
rs
for the play data. Two points appear removed from
the main cluster of points showing large values of d
rs
d
rs
.heseare(tim,h
)and
(ham,h
).Figure
.
showsahistogramofthevaluesof d
rs
−
d
rs
,showinganormal
−
type distribution with a few outliers.
Table
.
gives themeansquared differencesof d
rs
d
rs
foreachplay(i.e.averaged
over s for each r). Henry IV, Part
appears discordant with the other plays.
−
