Terminology Reference System
TRS
Linda H. Spencer
2822T
USEPA Headquarters
Ariel Rios Building
1200 Pennsylvania Avenue, N. W
Washington, DC 20460
202-566-1651
spencer.linda@epa.gov
The Terminology Reference System (TRS) has been created as a single resource of environmental terminology for the Agency by compiling collections of terms from EPA, Agency program offices, information systems, state collections and other sources. The TRS stores and displays hierarchical term collections. The content of the TRS supports the Agency's Data Standardization Process.
TRS is one of the terminology structures related to the extension of ISO-11179 to cover complex terminology structures.
Environmental Protection Agency is one of the interested sponsoring organizations of XMDR.
Environmental data
Environmental terminology
Term Definitions
Term Lists
Glossaries
Relationship Groups
Thesauri
Database Schemas
Number of Environmental Terms in TRS = 11977
Number of groups = 255
Size in bytes of internal representation = 11 MB
On behalf of Linda Spencer, EPA:
Toni Ogungbaige (toni.ogungbaigbe@lmco.com)
2005-01-20
The following attributes of the content characterization will be completed by XMDR staff. These attributes will be collected for those content collections which are considered to be high priority for inclusion in the prototype.
Attributes marked with an asterisk (*) are considered mandatory.
Publication date of most recent version of the metadata resource in ISO 8601 Date Format: YYYY-MM-DD. Taken from Dublin Core Metadata Element Set, Version 1.1: Reference Description.
Organization or person(s) responsible for the creation (authoring) of the metadata resource. Taken from Dublin Core Metadata Element Set, Version 1.1: Reference Description.
Organization or person(s) responsible for publishing / distributing the metadata resource. Note that we do not differentiate here between publishers and distributors. Taken from Dublin Core Metadata Element Set, Version 1.1: Reference Description.
Additional textual description of the metadata resource.
Language(s) of the content of the metadata resource. Is the metadata resource multi-lingual (e.g., thesauri)? Taken from the Dublin Core Metadata Element Set, Version 1.1: Reference Description.
Indicate type of metadata according to the following graph-theoretic classification scheme:
tree (e.g., Dewey Decimal Classification) - in a directed graph, every node, except the root (which has no parents), has exactly one parent node
faceted classification (e.g., LOINC, ... )
directed acyclic graph (DAG) (e.g., instance-of relations) - also known as a acyclic digraph
partial order (e.g., is-a, and part-of relations) Partial order = DAG + transitivity
lattice (temporal intervals, sets)
general simple directed graph (e.g., UMLS) - may contain cycles
nested graph - nodes may contain subgraphs, containment relation forms a tree, edges do not penetrate containers
directed hypergraph - edges connect sets of edges
compound graph - "meta-nodes" contain subgraphs, which may overlap, containment relation forms DAG, edges may penetrate containeres
What file formats (ASN.1, XML, RDF, KIF, HDF5, netCDF, ... ) can the metadata resource be had in? What schemas are used (e.g., for XML, RDF, ...)
Is the metadata resource available for download? What are the principal / mirror download sites ? What media types (CDROM, DVD, ...) are available (if any)?
Does the metadata resource include constraints? What kinds of constraints (keys, foreign keys, ....)? How are constraints specified (SQL, logic, RuleML, SWRL, Object Constraint Language, ...) ?
What protocols does the metadata publisher support for download, other access, e.g., FTP, HTTP, REST, SOAP, UDDI, LDAP, etc.
Open source, public domain, academic use, proprietary license, .... License agreement required ? Cost of license? Can content be redistributed or posted to the web?
Restrictions on export / distribution ?
Is there some subset of the metadata resource which would be of interest? Can we request / extract / query this subset for the originating site or will we have to obtain the complete metadata resource content and then perform the subset extraction query processing on our system?
What is the current version number of the metadata resource? How often is the metadata resource updated? How are updates named / distributed / propagated ?
What documentation is available? Where / how to obtain documentation ? Format of documentation ?
Is the data set encoded in ASCII, Unicode (and if so what character encoding UTF-8, UTF-16, ...), or other?
What system of measurement units (e.g., SI, cgs, US customary, ... ) is used (if any)? How are they encoded ?
Indicate any dependencies of this metadata resource on other metadata resources or standards, e.g., country codes, terminologies, chemical or biological nomenclature standards, etc.
Other similar or related metadata resources.
What software tools are available to parse, load, convert, browse, edit, .... this metadata resource (type)?
Who is the primary intended audience for this data set? Expert researchers, DBAs, scientific users, agency staffers, librarians, statisticians, teachers, general public, college students, high school students, ...
How should the metadata resource be cited in publications, etc. ? Note that the preferred bibliographic citation is often a publication rather than the web site for a resource.
Person who filled out this section of the survey for this metadata resource. Contact info also.
Date this survey was completed / updated for this metadata resource.
The following data elements are to be supplied by XMDR project staff/collaborators.
Attributes marked with an asterisk (*) are considered mandatory.
Names of persons (if any) on XMDR project (and contact info) who are familiar with this data set. XMDR participant organizations who have copies of this metadata resource.
Names of persons on XMDR project (and contact info) who evaluated this metadata resource for inclusion (e.g., if the content survey was completed by someone at the content repository).
Priority suggested for acquisition and ingestion of this metadata resource.