LSDB Archive @ NBDC

Basic Information

NameValue
Endpoint URIhttps://dba-rdf.biosciencedbc.jp/sparql
Site Descriptionhttps://dbarchive.biosciencedbc.jp/
Organization Information
data specified by dcterms:publisher in VoID
License Information
data specified by dcterms:license in VoID
Supported Language
data specified by sd:supportedLanguage in Service Description
SERVICE Keyword
true if the query using 'SERVICE' keyword returns result, otherwise false.
true
GRAPH Keyword
true if the query using 'GRAPH' keyword returns result, otherwise false.
true
Data Scale
a number represents the scale of data.
The value is determined by a formula, x = log10N where N is the number of data entries.
9.4
Rank
ranked as shown in the following table
RankScore
A81 - 100
B61 - 80
C41 - 60
D21 - 40
E0 - 20
B (65)
CORS
true if response header of endpoint contains 'access-control-allow-origin: *', otherwise false.
true
URI Indexed
true if URI rules of the endpoint are created. These are used for checking content negotiation and 4 Principles of Linked Data
true
Last Checked2020-06-29 12:26:17 UTC (36m 57s)
Class Structure

Please see this document for more details about Umaka Score.

Forum

AreaNameValue
Availability (100.0)Alive (Alive Rate)
The enpoint was alive or not when we cheked the endpoint last time. Alive rate shows how much the endpoint was alive in these 30 days.
true (100.0%)
Freshness (30.0)Last Updated
The last updated date. We decide the date as follows: Firstly, we try to find the date in Service Description and VoID. If explicit modifed date can not be found, we compare the number of statements, the fist statement and the last statement with those of yesterday. We assume some data is updated today if there is any differences. NOTE: Virtuoso could not count the statement correctly. So this mechanism does not work well for the endpoint on Virtuoso.
N/A
Operation (50.0)Service Description
true if Service Description can be retrieved as turtle or rdf+xml, otherwise false.
true
VoID
true if VoID can be found on well known URI, otherwise false.
false
Usefulness (26.2)
Metadata
This value shows how much metadata can be retrieved using the specified SPARQL query.
0 if any graph information can be retrieved.
For each graph, we score the status by retrieving classes, labels, properties and datatypes. The average of the scores are shown.
Please see the following pages for more details:
http://www.sparqlbuilder.org/doc/sparql-queries-for-sparql-builder-metadata/
49.9
Ontology
This value show the how the endpoint use common ontologies. We calculate the value as the average of the rate of the ontologies used in properties in metadata for each graph.
Please see also the following pages:
http://lov.okfn.org/dataset/lov
http://stats.lod2.eu/vocabularies
2.5
Links to Other Dataset
List of datasets specified by void:Linkset in VoID
N/A
Data Entry
Number of statements in the endpoint.
2,575,117,033
Support for HTML Data Format
true if the endpoint returns a response in HTML format, otherwise false.
true
Support for Turtle Data Format
true if the endpoint returns a response in Turtle format, otherwise false.
true
Support for RDF/XML Data Format
true if the endpoint returns a response in RDF/XML format, otherwise false.
true
Validity (90.0)4 Principles of Linked Data
This shows how much the endpoint obey the following 4 principles of Linked Data:
  • Use URIs as names for things
  • Use HTTP URIs so that people can look up those names.
  • When someone looks up a URI, provide useful information, using the standards (RDF*, SPARQL)
  • Include links to other URIs. so that they can discover more things.
Please see the following page for more details:
https://www.w3.org/DesignIssues/LinkedData.html
URIs are used as names?
Always true, because this rule is natural for RDF and it is meaningless for umakadata score.
true
HTTP URIs are used?:
N/A if the evaluation does not exist, true if all subjects are HTTP URI or blank node, otherwise false.
true
URI provides useful information?:
true if we can get some data from a HTTP URI of a subject, otherwise false. N/A: Firstly, we check whether the web site of the endpoint publishes download data or not.
true
Include links to other URIs?:
true if the endpoint contains owl:sameAs or rdf:seeAlso dataset, otherwise false. N/A: Firstly, we check whether the web site of the endpoint publishes download data or not.
true
Cool URI
We score the cool URI according 4 criteria:
  • the address of the endpoint is represented using host name not IP address.
  • the endpoint should listen 80 port.
  • the URI of the endpoint does not contain URL parameters.
  • the length of the URI is less than 30 characters.
Please see the following pages for more details:
75.0
Performance (99.5)Execution Time
This value represents the calculation performance. It is calculated as a difference of the response time retrieving the number of classes query from its ASK{} query.
11.907