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Viewpoint
1560
1561
1562
㻟㻨㼕㼄㻏㻃㻳㼈㼕㼖㼒㼑㼖㻏㻃㻮㼈㼜㼚㼒㼕㼇㼖㻡
㻋㻥㼄㼗㼗㼏㼈㻏㻃㻪㼌㼉㼗㻏㻃㼈㼗㼆㻌
a
Representing a person as a node,
connection between people
as an edge
b
b
h
b
c
c
c
d
e
1560
1561
1562
g
f
a
b
b
h
(b)Extracting a time sequential
network of people
c
b
䝿䝿䝿䝿䝿
䝿䝿䝿䝿䝿
䝿䝿䝿䝿䝿
䝿䝿䝿䝿䝿
䝿䝿䝿䝿䝿
c
c
d
e
(a) Historical Doc DB
g
f
battle
(d) Visualization of changes
in relationships
rebellion
peace
㻟㻨㼕㼄㻡
present
Assigning cluster type to
colors of edge
(c) Extracting clusters of keywords for
representing relationships between people
Fig. 8.1.
Overview of proposed visualization framework for temporal changes in
relationships between historical figures.
3 Historical Document Database
We use the historical database Dai-Nihon Shiryo Database.
1
The Dai-
Nihon Shiryo, which still has to be completed, will be the most
comprehensive collection of pre-modern Japanese historical materials. It
has been published by the University of Tokyo since 1901. It consists of
primary source material from the period between 887 and 1867 and is
organized chronologically by major historical events. Historiographers
give sophisticated sets of attribute values in Dai-Nihon Shiryo.
Currently, a part of Dai-Nihon Shiryo is being digitized and compiled
into a database called Dai-Nihon Shiryo Database (See Figure 8.2.) Each
record in the database represents one event. It includes the date of the
event, a list of people related to the event, a list of these people's official
titles, a list of place names related to the event, a list of keywords
representing the event, and an article on attributes. The current database
consists of about 230,000 records.
1. http://wwwap.hi.u-tokyo.ac.jp/ships/db.html
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