metsÄntutkimuslaitos skogsforskningsinstitutet finnish forest research institute expert evaluation...
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METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Expert evaluation
Jarmo Saarikko (Metla team)
NEFIS WP5 meeting
Hamburg 15.11.2004
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Particular points on metadata (D3)• Naming standards - usage• Element refinements - usage• Encoding Schemes• Themes• Metadata entry and control
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Naming standards• Spelling of names is important. “Name” is
fixed, all other properties of DC entities can be translated etc.
• Spelling of term Names seems inconsistent between the Metadata Schema and Metadata Guidelines as well as with DCMI
– Name “quality report” is “qualityReport”
• Not all Terms used in Guidelines are in Schema: NEFISrefinements are missing?
• Start using namespaces in the documentation!
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Element Refinements • are properties of a resource (like
Elements)• Element Refinements can alternatively
be used in metadata records independently of the properties they refine
• In DCMI practice, an Element Refinement refines just one parent DCMI property
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Encoding Scheme• provides contextual information or parsing
rules that aid in the interpretation of a term value
• contextual information– controlled vocabularies,– formal notations, or – parsing rules.
• Without an encoding scheme specifically designated, a subject which might very well be carefully selected from a controlled vocabulary cannot be distinguished from a simple keyword.
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
DCMI Type Vocabulary• A general, cross-domain list of
recommended terms • May be used as values for the Resource
Type element • To identify the genre of a resource • The member terms of the DCMI Type
Vocabulary are called Vocabulary Terms• http://dublincore.org/usage/terms/dcmitype/
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
NEFIS Vocabulary and term lists• The work done is very good in the
selected themes, although there is some overlap
• Work should be continued towards a forest thesaurus or forest ontology – as suggested
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Nominated terms – procedure?• the procedure to handle nominations
should be created before collecting such terms
• Perhaps more descriptive terms for this could be – Name: “suggestedTerm"– Label: "Suggested Terms”
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
NEFISthemes are overlapping• Economics Inventory and Economics • Stand
establishment Silviculture and Operations
• Forest typesVegetation andEnvironment & Ecology
• Forest damages Health, Fire and Environement & Ecology
• Wood Forest products and Wood fuel
• Institutions Research and Forest institutions
• Policy Rural development and Policy
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Some NEFISthemes are METHODS• These are not really SUBJECT themes:
– "Maps and georeferenced data" – "Field Experiment"
• Alternatives labels for these themes: – "Cartography" or "Geomatics" – "Research"
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Metadata entry• Using Word documents did not really
teach the correct structure or coding of metadata elements
• Someone has to manually enter the data into a database?
• Guidance to the ‘entry tool’ was not clear– e.g. handling multiple items
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Metadata control• The destination of the provided
metadata was unclear• Who owns the metadata?• Who can modify or delete the metadata
and how?• Can the moderator of records be
changed?• Batch or manual upload?
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Metadata guidelines (D5)• In general the guidelines were readable
and provided enough examples• However, there was some lack of
consistency over terms and values• Guidance to the element “Subject”
was unclear and confusing
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Element listing• For further versions of the Guidelines
– the element listing in the beginning should be expanded to cover both elements and element refinements
– these should be listed independently in the Guide as is the new policy of DCMI
– The Guidelines could group and list the mandatory elements first
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Subject - general• The descriptions, cross-references and
examples are confusing and diffcult to understand or apply
• nominatedTerms– The special case of using normal
metadata descriptions for term suggestions to an edited thesaurus may be quite confusing
– the process has to be extremely clearly explained and documented
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Subject – encoding schemes• Authority files should be compiled into a
registry of recommended encoding schemes• Encodings for habitats /sites should be added
– CORINE – NATURA2000 (EUR 25, 2003)– A classification of Palaearctic habitats (1995)– European vegetation types, the Nordic
Countries (2000)• Recommend one classification scheme
(e.g. GFDC as it is developed for forestry)
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Contextual consistency• There are references to a “metadata
entry tool” e.g. when describing “Nominated Terms”
• This is a guide to the metadata • There should be a separate technical
document on the entry tool
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Dublin Core numbers• 18 elements• 33 refinements• 12 controlled vocabulary terms• 17 vocabulary and encoding schemes• 10 other schemes
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Usability of the documentation• The deliverables were set up in a clear
and concise way and were easy to follow• For easiness of file management, the
vocabularies should have been provided as two files and given a version number
• There should be a separate technical document for the metadata entry tool (be it Word or something else)
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Quality• European Schoolnet has dealt with this
topic extensively• European Treasury Browser
– ETB recommendations on quality criteria (2001)
– ETB deals with metadata, interoperability, multilinguality, has a thesaurus, etc.
– http://etb.eun.org/etb/
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
Namespaces• For easiness of documentation and
interoperability• List all namespaces used by Nefis project• Document the namespace for each of the
element and qualifier names used by Nefis• Variable Names in dataset metadata should be
listed in a separate namespace• see: FML
Saarikko for NEFIS WP5 / Hamburg 15.11.2004 METSÄNTUTKIMUSLAITOS
SKOGSFORSKNINGSINSTITUTET
FINNISH FOREST RESEARCH INSTITUTE
www.metla.fi
FML – forest markup language• D3 described requirements for a deeper
metadata structure than the “Core” elements (used for describing datasets)
• FML Scheme and its possible modules and namespaces can solve this problem
• This provides the required interoperability