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GEO Label Metadata Annotation Issues and Discussion

What is the GEO label

The GEO label is a dynamical graphical representation (with drill down functionality) of the metadata accompanying the data provided by GEOSS in the GCI.

How the GEO label looks like

It is composed by 8 informational facets that represents the following concepts

Facet icon Description
‘Producer profile’ facet conveys availability of information about the producer of the dataset, e.g., organisation or individual who produced the dataset, their contact information, etc. (ISO191151, FGDC2, GeoViQua PQM3)
‘Lineage information’ facet conveys availability of lineage/provenance information, e.g., processing applied to data and number of process steps. (ISO19115, FGDC, GeoViQua PQM)
‘Producer comments’ facet conveys availability of any informal comments about the dataset quality as provided by the dataset producer, e.g., any identified problems, suggested use, etc. (ISO191151, FGDC2, GeoViQua PQM3)
‘Compliance with standards’ facet conveys availability of information about dataset’s compliance with international standards, e.g., compliance with ISO 19115, Dublin Core, etc. (ISO191151, FGDC2, GeoViQua PQM3)
‘Quality information’ facet conveys availability of formal quality measures of the dataset, e.g., uncertainty measures recorded in UncertML, errors, accuracy information, etc. (GeoViQua PQM3)
‘User feedback’ facet conveys availability of feedback, comments and ratings provided by the users of the dataset, e.g., general comments on dataset quality, identified problems, suggested use for the dataset, etc. (GeoViQua UQM4)
‘Expert reviews’ facet conveys availability of domain experts’ comments on dataset quality, e.g., results of formal quality checks, expert suggestions on the dataset applications, etc. (GeoViQua UQM4)
‘Citations information’ facet conveys availability of citations where the dataset was used and cited, e.g., formal reports on dataset quality checks, journal articles, etc. (GeoViQua PQM3, GeoViQua UQM4)

As the GEO label is intended to convey the availability of quality information for a given dataset, each informational facet can represent one of three availability states:
  • ‘available’,
  • ‘not available’, and
  • ‘available only at a higher level’ (indicates that information is not immediately available for the dataset, but is available for a parent dataset).
These three information availability states will be expressed through varying the appearance of the facet icons.

Facet icon Description
Fully filled-in background + white icon – indicates that information is available for this dataset.
White background + icon outline – indicates that information is not available for this dataset.
Partially filled-in background + icon outline – indicates that information is available only at a higher level for this dataset.

Based our user studies, we developed this GEO label representation.

When integrated in the GEOSS, an individual GEO label can be provided for each dataset catalogued in the Discovery and Access Broker in the GEOSS Common Infrastructure (or other data portals and catalogues) based on its available quality information. Producer and feedback metadata documents are being used to dynamically assess information availability and generate the GEO labels. The producer metadata document can either be a standard ISO/FGDC compliant metadata record supplied with the dataset, or an extended version of a GeoViQua-derived metadata record, and is used to assess the availability of a producer profile, lineage, producer comments, compliance with standards, citations and quantitative quality information. GeoViQua user feedback server collects and encodes (as metadata records) user and producer feedback on datasets; these metadata records are used to assess the availability of user comments and ratings, expert reviews and user-supplied citations for a dataset.

GEO labels can be provided in raster formats (e.g. png) and vector formats (e.g svg)

Hover functionality

The SVG version of the GEO label is more dynamic offering extra textual information when someone hovers the label with the mouse cursor

Facet icon Hovering extra information example
Producer Profile Organisation name: Center for Spatial Information Science and Systems, George Mason University.
Lineage Information Number of process steps: 3.
Producer Comments: Supplemental Information: undefined Known Problems: undefined
Standards Compliance: Standard name: ISO 19115:2003/19139, version 1.0.
Quality Information: Quality information scope: undefined.
User Feedback Number of feedbacks: 0. Average rating: 0 (0 rating(s)).
Expert Review Number of reviews: 0. Average rating: 0 (0 ratings).
Citations Information Number of citations: 0.

Example of the hover functionality in the first facet of the GEO label
Producer Hover GEO Label

Drill-down functionality

The GEO label provides drill-down functionality which will allow a user to navigate to a GEO label page offering detailed quality information for its associated dataset.

Who the GEO label is being build

XPath used

GEO lable API

GEO label integration

Who work on the GEO label

This website presents the work of the GeoViQua project to build a GEO label as a potential future part of the GEOSS Common Infrastructure of the Global Earth Observing System of System (GEOSS). This effort is a GeoViQua contribution to ID-03 GEO Task. The aim of the GeoViQua project is to look for a consensus on the notion of the GEO label by means of participating in GEO tasks, GEO Plenary exhibitions, signing and MoU with the EGIDA project, and also by conducting a series of carefully designed user studies.

The Global Earth Observations System of Systems (GEOSS)is a distributed ‘system of systems’ which is being constructed by the Group on Earth Observation (GEO) to “provide decision support tools to a wide variety of users” (GEO, 2012). Given that the GEOSS is estimated to contain more than 28 million dataset records, and is constantly growing, choices faced when selecting a dataset can (depending on usage domain) be quite daunting. With such a great choice of datasets comes the problem of data quality assessment and dataset selection decision-making. To tackle this challenge, the GEO Science and Technology Committee (STC) propose to establish a GEO label – a label “to recognise the scientific relevance, quality, acceptance and societal needs for activities in support of GEOSS” (Science & Technology Committee, 2010, p.2). The STC suggests that the development of such a label could significantly improve user recognition of the quality of geospatial datasets and that its use could help promote trust in datasets that carry the established GEO label. In 2010-11 the European Commission financed two projects (GeoViQua and EGIDA) to support the STC activities, with both projects adopting the responsibilities for defining the GEO label concept. In 2012 ID-03 GEO Task took over the ST-09-02 (http://www.geo-tasks.org/id03) and is now responsible for the development of the GEO label concept. The EGIDA project ended in 2012 but the GeoViQua will work on defining the GEO label and providing its practical implementation until beginning of 2014. GeoViQua believes that the GEO label could also assist in dataset searching and selection activities by providing users with visual cues of dataset quality and possibly relevance; in essence, a GEO label could effectively operate as a decision-support mechanism for dataset selection. We aim for support of the broader GEO community and eventual endorsement by the GEO Implementation Boards, ExCom and GEO Plenary.

Look for information about the GeoViQua solution for the GEO label:

-- DavidArctur - 23 Aug 2013
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Topic revision: r4 - 06 Dec 2013, JoanMaso
 

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