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1
䠌
1
䠌
2
TA K E DA Kat s u y o r i
1
1
Unknown
1
Allowance
䠌
2
TA K E DA Kat s u yo r i
Frequency
=> thickness
5
1
Battle
TAKEDA Kat suyori
5
Cluster type
=> color
Unknown
ODA Nobunaga
Battle
1
AD 1574
Peace
ODA Nobunaga
AD 1575
ODA Nobunaga
AD 1576
Time line
Figure 8.6.
Visualization of components of the relationship between two people.
clusters for adversarial
relationship or battle
(shades of red)
clusters for friendship
(shades of blue)
battle, death, Ikko-ikki,
hostage, plunder
peace, gift, prayer, grant,
celebration, conferment
Table 8.3.
Example of grouping
7 Case Studies
7.1 Changes in Structure of “Battle” Network
Figure 8.7 shows a visualization of temporal changes in the structure of a
network of people related to the viewpoint of “battle” from 1568 to 1574.
The keywords for “battle” such as “war”, “attack”, “surrender”,
“reconciliation”, “formation”, “reinforcement”, “invasion”, “subjugation”,
and “retreat” are used to select records from the database, and extract the
network annually for the period between 1550 and 1650.
Figure 8.7 (a) shows the relationship networks of ODA Nobunaga in
1568, 1569, and 1570 from left to right. It is quite clear that the node of
ODA Nobunaga first appears in 1568 and it is bigger than others. This is
obviously because at that date, Nobunaga entered Kyoto with ASHIKAGA
Yoshiaki to support Yoshiaki's becoming the 15th Shogun of the Ashikaga
shogunate. It also shows that the node of Nobunaga becomes the centre of
clusters of various nodes. Furthermore, it is evident that there are two
more clusters of people around Nobunaga in 1570. Nobunaga was
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