Graphics Reference
In-Depth Information
(Harary
, pp.
; Bollobas
,pp.
). he graph corresponds to the axis index
permutation
. On the right, the union with the additional two Hamiltonian
paths, starting at vertices
and
, forms the complete graph that contains all possible
edges. Hence, the three permutations
,
,
contain all possible
adjacent pairs (try it!). he remaining permutations are obtained from the first by
successively adding
mod
, and this works for all N.
Returning to EDA, the icon with the Rubik's Cube on Parallax's toolbar activates
a permutation editor which automatically generates the Hamiltonian permutations
(abbr. HP). Ater scrutinizing the dataset display, the recommended next step is to
run through the O
HP. his is how all nice adjacencies such as the one in
Fig.
.
arediscovered.hen,usingtheeditor,patchyourowncustom-madepermu-
tation containing all of the parts you like into the HP. With this preprocessing cost,
referred to earlier in list item
of the Introduction, the user can set their own best
permutation to work with. Of course, there is nothing to prevent one fromincluding
axes several times in different positions and experimenting with different permuta-
tions during the course of the exploration.
(
N
)
Compound Queries: Financial Data
14.2.3
Next up is the financial dataset in Fig.
.
. Here the goal is to discover relations that
areusefulforinvestments andtrading.hedata fortheyears
(secondtickonthe
thirdaxes)and
areselected.In
the
Yen
hadthegreatest volatility amongthe
three currencies, interests varied inthe mid-range,gold hada pricegap,while
SP
was uniformly low. By comparison, in
, the
Y
en was stable while
S
terling was
very volatile, interest and the price of gold were low, and the
SP
was uniformly
high. Two interval queries are combined with the OR boolean operator (i.e., union)
to obtain this picture. We continue to
“look for the gold” by checking out patterns that catch our attention.
he data for
is isolated in Fig.
.
and the lower range in the gold price gap is
selected. Gold prices were low until the second week in August, when they jumped
and stayed high. he exploration was carried out in the presence of four financial
experts, who carefully recorded the relation between low
Yen
,high
M
TB rates and
low
G
old prices By the way, a low rate of exchange for the
Yen
means that the Yen
has high value relative to the $.
here are two bunches of crossing lines between the sixth and seventh axes in
Fig.
.
, which together comprise more than
% of the dataset. his, and recalling
the previous discussion on the line
point mapping in Fig.
.
, suggests a strong
negative correlation between
Yen
and
M
TB rates. he smaller cluster in Fig.
.
is
selected. Moving from the top range of any of the two axes, applying the
I
query and
lowering the range causes the other variable's range to rise - a nice way of showing
negative correlation interactively.
For the contrarians among us, we also check for positive correlation in Fig.
.
.
Wefindthatitexistswhen
G
oldpricesarelowtomid-range,ashappenedforaperiod
in the
s. his is a free investment tip for bucking the main trend, as shown in
Fig.
.
. It is also a nice opportunity to show the inversion feature activated by the
