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Toward verifiable science assessment reporting: The Global Change Information System (GCIS)

Toward verifiable science assessment reporting: The Global Change Information System (GCIS). MPI-M Seminar – September 17, 2014 Peter Fox + (RPI) - GCIS Semantics Lead, pfox@cs.rpi.edu , @ taswegian , http:// tw.rpi.edu + lots of others (esp. R. Wolfe, C. Tilmes , X. Ma).

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Toward verifiable science assessment reporting: The Global Change Information System (GCIS)

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  1. Toward verifiable science assessment reporting: The Global Change Information System (GCIS) MPI-M Seminar – September 17, 2014 Peter Fox + (RPI) - GCIS Semantics Lead, pfox@cs.rpi.edu, @taswegian, http://tw.rpi.edu + lots of others (esp. R. Wolfe, C. Tilmes, X. Ma) www.globalchange.gov

  2. Overview • U.S. National Climate Assessment • About the GCIS • Who are we? • What did we do and why? • Underlying methods and technologies • What are our plans for the future? • Sneak peak of more verifiable science…

  3. U.S. Global Change Research Program The Program: • Coordinates Federal research to better understand and prepare the nation for global change • Prioritizes and supports cutting edge scientific work in global change • Assesses the state of scientific knowledge and the Nation’s readiness to respond to global change • Communicates research findings to inform, educate, and engage the global community

  4. Global Change Research Act (1990), Section 106 …not less frequently than every 4 years, the Council… shall prepare… an assessment which– integrates, evaluates, and interprets the findings of the Program and discusses the scientific uncertainties associated with such findings; analyzes the effects of global change on the natural environment, agriculture, energy production and use, land and water resources, transportation, human health and welfare, human social systems, and biological diversity; and analyzes current trends in global change, both human- induced and natural, and projects major trends for the subsequent 25 to 100 years.

  5. National Climate Assessments Climate Change Impacts on the United States (2000) See: http://globalchange.gov/ Global Climate Change Impacts in the United States (2009) Climate Change Impacts in the United States (2014)

  6. NCA 2009 http://nca2009.globalchange.gov

  7. Outline for Third NCA Report • Letter to the American People • Executive Summary: Report Findings • Introduction • Our Changing Climate • Sectors & Sectoral Cross-cuts • Regions & Biogeographical Cross-cuts • Responses • Decision support • Mitigation • Adaptation • Agenda for Climate Change Science • The NCA Long-term Process • Appendices • Commonly Asked Questions • Expanded Climate Science Info 7

  8. Regions & Biogeographical Cross-Cuts Oceans and Marine Resources Coasts, Development, and Ecosystems

  9. Sectors • Water Resources • Energy Supply and Use • Transportation • Agriculture • Forestry • Ecosystems and Biodiversity • Human Health

  10. Sectoral Cross-Cuts • Water, Energy, and Land Use • Urban Systems, Infrastructure, and Vulnerability • Impacts of Climate Change on Tribal, Indigenous, and Native Lands and Resources • Land Use and Land Cover Change • Rural Communities • Biogeochemical Cycles

  11. globalchange.gov - v2.0

  12. National Climate Assessment 2014

  13. Global Change Information System(GCIS) Long Term Vision: The Global Change Information System (GCIS) is intended to eventually become a unified web based source of authoritative, accessible, usable and timely information about climate and global change for use by scientists, decision makers, and the public.

  14. Global Change Information System(GCIS) Long Term Vision: The Global Change Information System (GCIS) is intended to eventually become a unified web based source of authoritative, accessible, usable and timely information about climate and global change for use by scientists, decision makers, and the public. Initial Prototype: Coincident with the release of the Third National Climate Assessment (NCA) or May 6 2014, the GCIS supports the distribution, presentation and documentation needs of the NCA, integrating that content into the USGCRP web site and demonstrating the potential for GCIS to support the long term vision.

  15. Information Quality Act • Reproducibility means that the information is capable of being substantially reproduced, subject to an acceptable degree of imprecision. For information judged to have more (less) important impacts, the degree of imprecision that is tolerated is reduced (increased). With respect to analytic results, "capable of being substantially reproduced'' means that independent analysis of the original or supporting data using identical methods would generate similar analytic results, subject to an acceptable degree of imprecision or error. • Transparency is not defined in the OMB Guidelines, but the Supplementary Information to the OMB Guidelines indicates (p. 8456) that "transparency" is at the heart of the reproducibility standard. The Guidelines state that "The purpose of the reproducibility standard is to cultivate a consistent agency commitment to transparency about how analytic results are generated: the specific data used, the various assumptions employed, the specific analytic methods applied, and the statistical procedures employed. If sufficient transparency is achieved on each of these matters, then an analytic result should meet the reproducibility standard." In other words, transparency - and ultimately reproducibility - is a matter of showing how you got the results you got. http://www.cio.noaa.gov/services_programs/IQ_Guidelines_011812.html

  16. Complete Traceability for NCA Content Transparency ------------------------------------------------------------------------ Reproducibility Easier . . . . . . . . . . . . . . . . . . . . . . . . Harder Traceable Sources Traceable Data Traceable Processes Traceable Tools • References • Image sources • Data sources • Link to datasets • Complete metadata • Description of methods • Access to process info & review • Access to computer code • Description of systems and platforms

  17. Data and The National Climate AssessmentThe Challenge • More than 250 named authors (>1000 contributing!) • 827 pages • 43 Chapters and Appendices • 284 Figures • More than 600 Images • 3395 References • Approximately 83 data sources used across as many as 235 instances

  18. Data and National Climate AssessmentThe Solution • Defined categories of information within the report: • Figure • Image • Data Source • Build a process for collecting source information that will satisfy IQA and HISA requirements: • Named sources and contacts for every figure, image, and data source • Web-based survey that requests inputs that address transparency and reproducibility and build a foundation for providing the Metadata ISO 19115 standard • IT infrastructure that connects and promotes automation between the web-based survey, a structured data server (SDS)/GCIS, and publication to an official, interactive NCA web site

  19. The use case-driven iterative approach More details at: http://tw.rpi.edu/web/doc/TWC_SemanticWebMethodology

  20. Ontology engineering use case The first use case • Title: Find data used to generate a report figure • Actor and system: A reader of the National Climate Assessment • Flow of interactions: A reader wishes to identify the source of the data used to produce a particular figure in the NCA. A reference to the paper in which the image contained in this figure was originally published appears in the figure caption. Clicking that reference displays a page of metadata information about the paper, including links to the datasets used in that paper. Pursuing each of those links presents a page of metadata information about the dataset, including a link back to the agency/data center web page describing the dataset in more detail and making the actual data available for order or download.

  21. Ontology engineering use case The first use case • Title: Find data used to generate a report figure • Actor and system: A reader of the National Climate Assessment • Flow of interactions: A reader wishes to identify the source of the data used to produce a particular figure in the NCA. A reference to the paper in which the image contained in this figure was originally published appears in the figure caption. Clicking that reference displays a page of metadata information about the paper, including links to the datasets used in that paper. Pursuing each of those links presents a page of metadata information about the dataset, including a link back to the agency/data center web page describing the dataset in more detail and making the actual data available for order or download.

  22. An intuitive concept map of the 1st use case 22

  23. An intuitive concept map of the use case Classes and properties recognized from the use case 23

  24. An intuitive concept map of the use case • From an intuitive model to an ontology: • A defined class or property should be meaningful and robust enough to meet the requirements of various use cases • An ontology can be extended by adding classes and properties recognized from new use cases through the iterative approach Classes and properties recognized from the use case 24

  25. Data and The National Climate AssessmentThe Solution globalchange.gov website Structured Data Server NCA Resources Site Web Form ATRAC/XML File Generator Metadata Entry

  26. Dataset metadata from a figure

  27. Dataset metadata from a image in a figure

  28. The second use case • Title: Identify roles of people in the generation of a chapter in the draft NCA3 • Actor and system: a viewer of the GCIS website • Flow of interactions: A viewer sees that Chapter 6 (Agriculture) in the draft NCA3 was written by a group of authors mentioned in a list. On the title page of that chapter the reader can view the role of each author, e.g., convening lead author, lead author or contributing author, in the generation of this report chapter. • We decided to use the PROV-O ontology to describe this use case 28

  29. The three Starting Point classes in PROV-O ontology and the properties that relate them Source: http://www.w3.org/TR/prov-o/ 29

  30. Mapping the use case into PROV-O Author of Chapter 6 Chapter 6 in NCA3 isA isA Writing of Chapter 6 in NCA3 isA 30

  31. Roles of agents in an activity in PROV-O Source: http://www.w3.org/TR/prov-o/ 31

  32. Mapping roles of chapter authors into PROV-O Writing of Chapter 6 in NCA3 Author of Chapter 6 isA isA Convening lead author Lead author isA Contributing author 32

  33. Roles of people in the activity ‘Writing of Chapter 6’ Here only three of the eight authors of this chapter are shown. Each author had a specific role for this chapter.

  34. Re-using existing ontologies for the GCIS ontology By such mappings we can use reasoners that are suitable for the PROV-O ontology, and thus to retrieve provenance graphs from the established GCIS 34

  35. GCIS Structured Data Server • Capture – Obtain from a variety of sources: manual input by trusted parties – support staff, agency partners, data centers; automated harvesting from publishers, agency data centers, etc. • Identify – Assign persistent, resolvable, controlled identifiers to each element. • Organize – Capture, discover and represent relationships between elements, including across various types of elements; across data centers; and across agency boundaries. • Present– Provide machine accessible interfaces to retrieve structured metadata, and to search/data mine it. • Maintain – Develop tools and processes to ensure quality and integrity of database contents over time.

  36. Global Change Content Elements • Reports, Figures, Images, Research Papers, Journals, Measurements, Datasets, Instruments, Agencies, Projects, People, Models, Algorithms, … • Findings – “Climate is changing.” “Sea Level is Rising.” • Concepts: “Impacts of Climate Change on Human Health” “Adaptation”

  37. Machine Accessible Metadata globalchange.gov website Structured Data Server NCA Resources Site Web Form ATRAC/XML File Generator

  38. Linked Open Data http://5stardata.info

  39. Identifier Resolution doi:10.5067/MEASURES/GSSTF/DATA308 A common, persistent, citable reference to that dataset. We build GCIS specific identifiers from those: http://data.globalchange.gov/doi/10.5067/MEASURES/GSSTF/DATA308 Then we can resolve it (with content negotiation) on our site, and link it with identifiers for our other resources, including asserting equivalence and linking with the data center responsible for stewardship and distribution of the actual data. We can also refer and link to other repositories of information about those resources.

  40. Content Negotiation • http://data.globalchange.gov/doi/10.5067/MEASURES/GSSTF/DATA308 • The server response from the URI depends on what you ask for: • A traditional browser will ask for HTML, and receive and render a human readable description of the resource. • Web services can request formal, structured XML or RDF metadata about the resource. • Our goal is to provide a curated collection of authoritative global change information, but always link back to the data center or publisher responsible for the long term stewardship of the resource.

  41. GCIS Structured Data Server data.globalchange.gov

  42. GCIS Database/API • RESTful API at data.globalchange.gov • URLs correspond to ontology URIs • Primary storage : RDBMS (PostgreSQL) • Representation is serialized (for JSON) or used in templates (for Turtle) • Turtle representation is exported into a triple store (Virtuoso) which provides a SPARQL endpoint. 42

  43. GCIS Ontology (version 1.2) (a) Classes and properties representing a brief structure of the NCA3

  44. (b) Classes and properties relevant to the findings of the NCA3 and each chapter in it 44

  45. (c) Classes and properties about sensors, instruments, platforms, and algorithms, etc. through which datasets are generated 45

  46. A few classes are asserted as sub-classes of PROV-O classes Full GCIS Ontology documents are available at: http://tw.rpi.edu/web/project/gcis-imsap/GCISOntology 46

  47. (part of) GCIS Ontology For more info, see http://data.globalchange.gov

  48. Final output of the GCIS ontology • Ontology documentation • http://escience.rpi.edu/ontology/GCIS-IMSAP/2/GCISOntology_v_1_2.htm • Concept map • http://cmapspublic3.ihmc.us/rid=1MCJMLST0-1G0CSWH-2YH4/GCIS_Ontology_v1_2.cmap • Ontology RDF serialized in Turtle format • http://escience.rpi.edu/ontology/GCIS-IMSAP/2/GCISOntology_v_1_2.ttl

  49. Global Change Keywords (GCMD) Sample finding: GCMD v8.0 Certain types of extreme weather events have become more frequent and intense, including heat waves, floods, and droughtsin some regions. The increased intensity of heat waves has been most prevalent in the western parts of the country, while the intensity of flooding events has been more prevalent over the eastern parts. Droughts in the Southwest and heat waves everywhere are projected to become more intense in the future. • ATMOSPHERIC/OCEAN INDICATORS > EXTREME WEATHER • EXTREME WEATHER > EXTREME PRECIPITATION • PRECIPITATION > PRECIPITATION RATE • EXTREME WEATHER > HEAT/COLD WAVE FREQUENCY/INTENSITY • NATURAL HAZARDS > HEAT • NATURAL HAZARDS > FLOODS, • PRECIPITATION > PRECIPITATION AMOUNT • PRECIPITATION >RAIN • SURFACE WATER > FLOODS • ATMOSPHERIC PHENOMENA > DROUGHT, • EXTREME WEATHER > EXTREME DROUGHT, • NATURAL HAZARDS > DROUGHTS

  50. SPARQL Example • http://data.globalchange.gov/examples • List 10 figures and datasets from which they were derived select ?figure,?dataset FROM <http://data.globalchange.gov> where { ?figure gcis:hasImage ?img . ?imgprov:wasDerivedFrom ?dataset } limit 10 50

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