1. GEOSS Component and Service Registry (CSR)
Architecture and Registration
Prof. Liping Di
Director
Center for Spatial Information Science and Systems (CSISS)
George Mason University
Fairfax, VA, 22030, USA
April , 2017

2. Introduction
GEOSS CSR is a web system where Earth Observation resources contributed to GEOSS are registered through dedicated secured registration forms.
Resource providers (e.g., government agencies and organisations) could register their resources in CSR by providing essential details about the name, contents, Earth observation vocabulary, standards and special arrangements (if any) of their contribution.
Assists the GEOSS, and ultimately the user, to identify the GEOSS resources of interest.

3. Current CSR Highlights
Currently there are 1427 user accounts and 867 approved registered resources in the CSR system
ISO19115 and ISO19119 were utilized as basic information model for resource registration. Information model under ISO family not only facilitates the interaction within GEOSS community (i.e. harvesting resources from CSR), but also enhances the interoperability between external GEOSS clients and CSR.
Leverages state of the art GeoNetwork as back-end geo-spatial catalog. OGC CSW interface in GeoNetwork enhances both query ability and interoperability of CSR.
Security Mechanism - Encryption mechanism secures the user information in system (i.e. password) and the privilege management in back-end GeoNetwork guarantees a secured metadata discovery and access.

4. CSR CSW API
The GEOSS registry exposes OGC CSW interfaces to be accessed by other applications, including GEO Discovery and Access Broker.
GEO Discovery and Access Broker implementations can use the GEOSS registry to register and locate GEOSS catalog services as a basis for evaluation, configuration, harvest, and distributed query.
CSR CSW Interfaces
GetCapabilities operation allows CSW clients to retrieve service metadata from a server.
DescribeRecord operation allows a client to discover elements of the information model supported by the target catalogue service

5. CSR and SIR Interaction
Providers can nominate new “Standards and Special Arrangements” for approval via CSR
All the current “Standards and Special Arrangements” are populated in CSR for user to associate their resources.

6. CSR System Architecture
GEO Discovery and Access Broker

7. CSR Architecture Resource Providers via Secured Web Portal can
Register New Resource and place approval Request
Modify/Delete Resource he/she owns
Search/View all Registered Resources
Resource Users (without user account) can
Search/View Only Approved Resources (non-secure search/holding pages)
Create User Account to become Resource Provider
CSR Operational Team
Reviews the registered (pending) Resources and approves them (if qualifies) to be visible for harvesting
GEO DAB
Harvests the approved resources via CSW interface

8. Resource Registration (Overview)
Basic Info
Resource Category, Name, Abbreviation, Description, Resource Accessibility, GEO Affiliation
Start
Properties
Contact Info, Societal Benefit Areas, Resource Availability, Sharing Properties, Geographic Extent, Temporal Extent
Standards
Earth Observation Vocabulary
Standard/Special Arrangements *
Submit Request
* For Resource Category :”Datasets” , “Analysis and Visualization”, “Alerts, RSS, and Information Feeds”, and “Catalogues, Inventories and Metadata Collections” , the Standard/Special Arrangements are mandatory field with at least one entry from either “Data Access” , “Catalog/Registry Service”, Portrayal and Display Service”, or “Data Transformation Services”

9. Resource Registration – Basic Info

10. Resource Registration - Properties

11. Resource Registration – Properties

12. Resource Registration - Standards

13. Total Resources and Types – Approved *
Resource Types
Total Resources
Datasets
144
Monitoring and Observation Systems 76
Software and applications 60
Initiatives 16
Websites and documents
200
Analysis and visualization
252
Catalogues, Inventories and Metadata Collections
113
Computational Models 1
Alerts, RSS, and Information Feeds 6
867
* As of 3/29/2017

14. User Access Statistics
From Jan 1, 2015 – March 28, 2017
Total user sessions were 8740
Average session duration of 1 minute and 23 seconds
Majority of users from USA – 30%
Users from other major countries such as Brazil, UK, China, Germany, Italy, Russia, Spain, and Japan were between 2% to 5 %.
The uptime for the CSR service was 99.9%

15. Thank you !