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report count (with pdf)
26654 reports
( Participation 524 Orgs )
report count
84693 reports
( compared to the privious fiscal year + 16026 reports )
( Participation 1689 Orgs )
site summary count
135237 reports
( compared to the privious fiscal year + 4141 reports )
video count
296 reports
( compared to the privious fiscal year + 296 reports )
( Participation 32 Orgs )

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 23517
Hokkaido Prefecture180 Ibaraki Prefecture796 Niigata Prefecture375 Gifu Prefecture226 Shiga Prefecture258 Tottori Prefecture331 Tokushima Prefecture114 Fukuoka Prefecture1501
Aomori Prefecture341 Tochigi Prefecture103 Toyama Prefecture852 Shizuoka Prefecture473 Kyoto Prefecture307 Shimane Prefecture1184 Kagawa Prefecture640 Saga Prefecture108
Iwate Prefecture607 Gumma Prefecture566 Ishikawa Prefecture146 Aichi Prefecture303 Osaka Prefecture1761 Okayama Prefecture555 Ehime Prefecture188 Nagasaki Prefecture340
Miyagi Prefecture1081 Saitama Prefecture261 Fukui Prefecture13 Mie Prefecture595 Hyogo Prefecture628 Hiroshima Prefecture215 Kochi Prefecture384 Kumamoto Prefecture326
Akita Prefecture595 Chiba Prefecture140 Yamanashi Prefecture985 Nara Prefecture640 Yamaguchi Prefecture15 Oita Prefecture65
Yamagata Prefecture686 Tokyo Metropolis34 Nagano Prefecture2614 Wakayama Prefecture90 Miyazaki Prefecture1214
Fukushima Prefecture19 Kanagawa Prefecture41 Kagoshima Prefecture467
Okinawa Prefecture154

Site report Word Map-Kochi 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 2020-10-25

Site report Word Map-Kochi 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 2020-10-25
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