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report count (with pdf)
25909 reports
( Participation 513 Orgs )
report count
70298 reports
( compared to the privious fiscal year + 1604 reports )
( Participation 1691 Orgs )
site summary count
133896 reports
( compared to the privious fiscal year + 2832 reports )

Number of Archaeological Site Reports by Prefectures

In the process of creating the Word Map, if there are not enough archaeological site reports (PDF format) from individual prefectures, the Word Map is not created. This is due to the fact that we want to avoid results affected by the statistical bias. Therefore, the Word Map is only created if the archaeological site reports that are in the PDF format (Report Type a01from Comprehensive Database of architectural site) has more than 300 site. Bulletin articles and materials from field briefings, are not included in the number of site reports.

All 22872
Hokkaido Prefecture176 Ibaraki Prefecture793 Niigata Prefecture374 Gifu Prefecture221 Shiga Prefecture258 Tottori Prefecture331 Tokushima Prefecture114 Fukuoka Prefecture1363
Aomori Prefecture337 Tochigi Prefecture4 Toyama Prefecture845 Shizuoka Prefecture470 Kyoto Prefecture290 Shimane Prefecture1165 Kagawa Prefecture636 Saga Prefecture105
Iwate Prefecture576 Gumma Prefecture556 Ishikawa Prefecture100 Aichi Prefecture292 Osaka Prefecture1759 Okayama Prefecture555 Ehime Prefecture188 Nagasaki Prefecture327
Miyagi Prefecture1036 Saitama Prefecture258 Fukui Prefecture13 Mie Prefecture587 Hyogo Prefecture615 Hiroshima Prefecture207 Kochi Prefecture384 Kumamoto Prefecture306
Akita Prefecture594 Chiba Prefecture71 Yamanashi Prefecture985 Nara Prefecture637 Yamaguchi Prefecture15 Oita Prefecture65
Yamagata Prefecture686 Tokyo Metropolis32 Nagano Prefecture2588 Wakayama Prefecture90 Miyazaki Prefecture1214
Fukushima Prefecture9 Kanagawa Prefecture41 Kagoshima Prefecture451
Okinawa Prefecture153

Site report Word Map-Nagano Prefecture(A Charted Overview of Frequent key words)

Papers listed in Comprehensive Database of Archaeological site reports in Japan has been subdivided into individual prefectures, where the archaeological key terms have been analysed and have been visualized as a figure.

Colour-coded Types of the key terms
Pink: Terms related to artefacts, Yellow: Terms related to the archaeological remains, Light blue: Other
* Depending on the key terms chosen there could be a slight change in the chosen category.
Created at 2020-08-02

Site report Word Map-Nagano Prefecture

Archaeological key words in the site reports from Comprehensive Database of Archaeological site reports in Japan have also been analysed and subdivided into individual prefectures. Key terms that are coming up in one prefecture but not in others shows us the uniqueness in the individual prefectures, and key terms that forms the archaeology in the separate prefectures.
Vector space model from Natural Language processing that combines TF (term frequency) and IDF(Inverse Document Frequency) to make TF-IDF was used to create this model. Numerical value used in the graph shows the quantity of the featured characteristics.

Colour-coded Types of the key terms
Pink: Terms related to artefacts, Yellow: Terms related to the archaeological remains, Light blue: Other
* Depending on the key terms chosen there could be a slight change in the chosen category.
Created at 2020-08-02
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