Concrete example data

Concrete example of observations and datasets are as follows.

Observation

Observation value, dimensions, etc. are defined for each observation. Additional attributes are also defined.

 

In case figure in small area or grid square is too small, the figure is concealed and added into the figure of neighboring area. Concealment information is defined in observations.

 

Dataset

Contents of statistical table are defined for each dataset.

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Dataset structure are also defined. Measures and dimensions used in the datasete are defined in dataset structure.

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As values of dimension which each dataset can have vary by dataset, the values are defined in dataset structure definition as a code list.

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Information attached to datasets

Contents of statistical table have government statistics, categories, etc. and are defined with hierarchy.

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Frequency of data is also defined.

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In each dataset, "fields of statistics" in e-Stat is defined as theme. Theme has two layers.

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Measure

Measures such as population, number of households, and amount of money are defined as original vocabularies. Data structure of measures is as follows. As for system of social and demographic statistics(SSDS), standard measure "http://purl.org/linked-data/sdmx/2009/measure#obsValue" is used.

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Dimension

Dimensions identify the observations and are defined as original vocabularies.

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Attribute

Unit of measure, unit multiplier, type of observation, and status of observation are defined as attributes. Attributes are attached to observations. Definition of unit of measure is illustrated as follows.

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Linkage to external vocabularies

Vcabularies defined in statistical LOD of Japan are linked to statndard vocabularies or external institutes’ vocabularies.

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Structure of SSDS:System of Social and Demographic Statistics

As for system of social and demographic statistics(SSDS), standard measure "http://purl.org/linked-data/sdmx/2009/measure#obsValue" is used. Dimension "indicator" is used to represent the phenomenon being observed.

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In SSDS, as dimension "indicator" is used to represent the phenomenon being observed, unit is attached to the value of dimension "indicator".

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SSDS is a system in which statistical data in a wide range of fields are collected, normalised and organised by prefectures and municipalities. Statistical LOD of Japan defines the original statistics for each indicator.

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Prefix

prefix URI
rdfs http://www.w3.org/2000/01/rdf-schema#
rdf http://www.w3.org/1999/02/22-rdf-syntax-ns#
dcat http://www.w3.org/ns/dcat#
skos http://www.w3.org/2004/02/skos/core#
qb http://purl.org/linked-data/cube#
sdmx-dimension http://purl.org/linked-data/sdmx/2009/dimension#
sdmx-code http://purl.org/linked-data/sdmx/2009/code#
dcterms http://purl.org/dc/terms/
cen http://datiopen.istat.it/odi/ontologia/censimento/
lod http://data.e-stat.go.jp/lod/
statistics http://data.e-stat.go.jp/lod/statistics/
govstat http://data.e-stat.go.jp/lod/statistics/governmentStatistics/
category http://data.e-stat.go.jp/lod/statistics/category/
category1 http://data.e-stat.go.jp/lod/statistics/category1/
table http://data.e-stat.go.jp/lod/statistics/table/
g00200521 http://data.e-stat.go.jp/lod/dataset/g00200521/
g00200502 http://data.e-stat.go.jp/lod/dataset/g00200502/
d0003041389 http://data.e-stat.go.jp/lod/dataset/g00200521/d0003041389/
d0003148541 http://data.e-stat.go.jp/lod/dataset/g00200521/d0003148541/
d0003041389-component http://data.e-stat.go.jp/lod/dataset/g00200521/d0003041389/dsd/component/
d0003148541-component http://data.e-stat.go.jp/lod/dataset/g00200521/d0003148541/dsd/component/
d0003148541-codeList http://data.e-stat.go.jp/lod/dataset/g00200521/d0003148541/dsd/codeList/
lod-table http://data.e-stat.go.jp/lod/ontology/table/
table-code http://data.e-stat.go.jp/lod/ontology/table/code/
d-prop http://data.e-stat.go.jp/lod/ontology/dataset/property/
d-theme http://data.e-stat.go.jp/lod/ontology/dataset/theme/
theme-field http://data.e-stat.go.jp/lod/ontology/dataset/theme/field/
prop-component http://data.e-stat.go.jp/lod/ontology/property/component/
prop-obs http://data.e-stat.go.jp/lod/ontology/property/observation/
estat-measure http://data.e-stat.go.jp/lod/ontology/measure/
estat-attribute http://data.e-stat.go.jp/lod/ontology/attribute/
estat-attribute-code http://data.e-stat.go.jp/lod/ontology/attribute/code/
cd-dimension http://data.e-stat.go.jp/lod/ontology/crossDomain/dimension/
cd-code http://data.e-stat.go.jp/lod/ontology/crossDomain/code/
g00200521-dimension-2010 http://data.e-stat.go.jp/lod/ontology/g00200521/dimension/2010/
g00200502-dimension http://data.e-stat.go.jp/lod/ontology/g00200502/dimension/
g00200502-code http://data.e-stat.go.jp/lod/ontology/g00200502/code/
g00200502-items http://data.e-stat.go.jp/lod/ontology/descriptionOfItems/g00200502/items/
sac http://data.e-stat.go.jp/lod/sac/
sa-g00200521-2015 http://data.e-stat.go.jp/lod/smallArea/g00200521/2015/