• No results found

Linking data and publications in the environmental sciences: CLADDIER project workshop, Chilworth, Southampton, UK 15th May 2007

N/A
N/A
Protected

Academic year: 2020

Share "Linking data and publications in the environmental sciences: CLADDIER project workshop, Chilworth, Southampton, UK 15th May 2007"

Copied!
23
0
0

Loading.... (view fulltext now)

Full text

(1)

Guy McGarva, EDINA National Data Centre

Rajendra Bose, DCC and School of Informatics

University of Edinburgh

Tuesday 15 May 2007

CLADDIER Project Workshop, Chilworth, Southampton, UK

Safeguarding the Citation Lifecycle for

Geospatial Repositories

(2)

Contents

• Issues

– Datasets vs. Features

• Citation of Geospatial Features

– OS MasterMap

®

example

• Dataset Citation

– Example using Go-Geo! and GRADE

(3)

Geospatial Dataset vs Geospatial Features

Citation may need to be at either Dataset or Feature

level because:

- You need to cite the dataset, if:

• Dataset is small (num. features, extent etc.)

• Whole dataset used in analysis

• Not feature based (e.g. raster/surface)

– But, you need to cite specific features, if:

• Only small extent from very large geodatabase

• Only specific features used in analysis

(4)

Geospatial Feature Citation

• Some Assumptions for features within a geospatial

repository:

– Every feature has a unique ID

• e.g. OS TOIDs (Topographic Object IDs)

– Features have version numbers/time-stamps

• Note: Talking about vector data that could be used

to produce cartographic products, but not the

(5)

journal article

citation creation

(future) discovery

of citation

citation included

in published work

retrieve/ resolve

citation

citation target

access a copy of

article held in a library or

institutional repository

journal article

article held in a library or

institutional repository

(6)

geospatial data

citation creation

(future) discovery

of citation

citation included

in published work

retrieve/ resolve

citation

citation target

reassemble geospatial

database contents

Author, 2006, Citation target,…

<web_link>

Author, 2006, Citation target,…

<web_link>

article held in a library or

institutional repository

journal article

data held in

geospatial repository

Citation lifecycle (broken) for geospatial data

D e l a w a r e , O h i o [ m a p ] . 1 8 8 5 . S c a l e n o t g i v e n . “ S a n b o r n F i r e I n s u r a n c e M a p s , 1 8 6 7 - 1 9 7 0 – O h i o ” . O h i o L I N K D i g i t a l M e d i a C e n t e r .

(7)

citation creation

(future) discovery

of citation

citation included

in published work

retrieve/ resolve

citation

citation target

reassemble geospatial

database contents

Author, 2006, Citation target,…

<web_link>

Author, 2006, Citation target,…

<web_link>

article held in a library or

institutional repository

journal article

data held in

geospatial repository

1

2

3

Citation lifecycle for geospatial data

(8)

toid="osgb1000042724588" version="2"

toid="osgb1000000334380650" version="1"

toid="rkb_20070328_2"

toid="rkb_20070329_1"

Sample Feature Data

e.g. OS MasterMap

(9)

Researcher_1

References:

Map1…

link

Jan 2007

Jan 2007

Jan 2007

<M>

GIS_1

base

data

Citation creation:

generation of

manifest

incorporation into

“bridge service”

web page (with

embedded

manifest)

<html>

citation in

publication links to

bridge service (via

doi?)

other data

source

<M>

= toid="osgb1000042724588 " version="2" toid="osgb1000000334380 650" version="1" toid="rkb_20070329_1" toid="rkb_20070328_2"

where,

e.g. OS MasterMap

(10)

Bose, Rajendra. 2007. “Building geohazard data set”. University of Edinburgh Database

Group.

<link to manifest in bridge service that provides standard geospatial metadata>

Sample Citation

And 'bridge service', is a web site that provides access to geospatial

metadata

Where, 'manifest' is XML file containing list of feature

identifiers and version numbers

(11)

Example of how bridge service would work:

(12)

DNF Schema to support data association

Sample XML data based on DNF schema

-

can be used to transfer object identifiers and

version numbers

- can be used to associate users data with

reference data

Object Identifier

Version number

<gml:featureMember>

<!--This object contains a simple association with a version and a multiple association. The referenceLayer attribute is used to show that this object belongs to "Yon Layer".-->

<exaro:ExampleApplicationReferenceObject gml:id="yonr22222222" dnf:version="2" dnf:referenceLayer="Yon Layer"> <exaro:exampleProperty1>Some application layer specific information</exaro:exampleProperty1>

<exaro:meaningfulAssociationName>

<!--In addition to the idReference this association specifies an individual version of the object. It also indicates the referenceLayer attribute showing that the referred to object is in the layer "That Layer".-->

<dnf:SimpleAssociation xlink:href="#that11111111" dnf:version="2" dnf:referenceLayer="That Layer"/> </exaro:meaningfulAssociationName>

<exaro:meaningfulListName>

<!--The order of the sequence is the order in which the association appear in this file i.e. this is a sequence of objects that22222222, that11111111 and that33333333 in that order.-->

<dnf:SimpleAssociationList> <dnf:simpleAssociations>

<dnf:SimpleAssociation xlink:href="#that22222222" dnf:referenceLayer="That Layer" dnf:version="2"/> <dnf:SimpleAssociation xlink:href="#that11111111" dnf:referenceLayer="That Layer" dnf:version="3"/> <dnf:SimpleAssociation xlink:href="#that33333333" dnf:referenceLayer="That Layer" dnf:version="4"/> </dnf:simpleAssociations>

</dnf:SimpleAssociationList> </exaro:meaningfulListName>

(13)

Researcher_2

4

GIS_2

Citation retrieval: Completes the life-cycle

References:

Map1…

link

extract

manifest

and access archive

from “bridge

service”

<html>

citation in

publication links to

bridge service (e.g.

via doi as in

STD-DOI project?)

repositories use manifest to

provide historical

MasterMap and other

features if user has

permissions

features can

now be

reassembled

with a GIS

(14)

Geospatial Dataset Citation Example

• An example using:

– Go-Geo Metadata portal and

– GRADE Geospatial Repository

• Shows how the life cycle could completed by

maintaining the citation in the metadata and

resolved by a domain repository

• GRADE solves problems of access and

authorisation by only being accessible to users of

Digimap (for uploading and downloading of data)

• Could be extended to support feature manifests

(15)
(16)

Linking a record in Go-Geo with the data in GRADE

(17)

Retrieving the data from GRADE

URL from Go-Geo!

(18)

Conclusions

• Current guidelines for citing a selection of

features within a geospatial database are

inadequate

• An XML manifest could serve as a definitive,

compact, portable (& copyright free) list of

geospatial features that could facilitate citation

• A ‘bridge service’ or metadata portal could

provide a means of retrieving citations

• Further work…

– How do manifests interact with

archives/repositories

(19)

Safeguarding the Citation Lifecycle

for Geospatial Repositories

Rajendra Bose rbose@inf.ed.ac.uk

Guy McGarva guy.mcgarva@ed.ac.uk

Tuesday 15 May 2007

CLADDIER Project Workshop

References

Related documents

produced using a more “natural” production method (i.e. organic agriculture). However, so far there is no common and objective definition of clean label. This review paper aims to

The others (e.g. Playing Videos, adding the shutdown button) are not crucial to the camera project but can be done if you’re also interested in exploring these capabilities.

As usual in neo-Schumpeterian growth models where there exists vertical innovation over a continuum of goods and where the innovations are no-drastic, each monopolistic producer

This paper presents a novel real-time planning algorithm, chance con- strained rapidly-exploring random trees (CC-RRT), which uses chance constraints to guarantee

Checks in the Ultimate Limit States Design Combinations Stress-Strain-Curves Design Internal Forces Design for Bending with or without Longitudinal Force or Longitudinal Force

Excerpt from online catalog: Advanced coverage of three essential management practices required for long-term business success: problem identification and

After creating the metadata for an entity type, you can use the Generate Jobs option from the entity type editor toolbar to create and publish jobs to the DataFlux Data

Eprints Metadata re-use permitted for not-for-profit purposes; Re-use of full data items permitted for not-for-profit purposes; Content policies explicitly undefined ;