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As a first example of the use of ChAMP in creation of a standard, research article metadata was chosen.  When we research the literature, we see that publishers provide keywords with the bibliographic information and the abstract on the page for the article.  While the keywords are important - they are what the papers' author(s) think are important facets of the research described - they are not standardized and thus do not really fit the needs of the readers of the paper.

In most cases, we find a paper via a text search of the title and abstract and then look for specific metadata (detection limit, analysis time, instrumentation, method accuracy, etc.) to evaluate whether it is something we can use, compare our work to, etc.  With that in mind, using ChAMP to represent important chemical analysis metadata (that researchers would like to search and compare methods with) is a logical use of the platform.

Starting from the ChAMP XML Schema any/all pieces of the schema can be used to create a schema for this application.  Below is an image of the schema for this example.  Remember, standards authors can design this any way they think is appropriate for their application.

[Other links:  ChAMP Standard Method XML ExampleChAMP Referemce Material XML Example]

 article schema

As you can see, the schema picks only certain elements for the standard.  It shows how to re-purpose existing elements ('champ:description') with a new name ('overview') using the 'substitutionGroup' attribute.  You can also import other schema, if you want a standard to use elements from schema other that ChAMP. Below is what an example XML file might look like representing the metadata about a specific paper.

article xml

Alternatively, the links to the ChAMP ontology can be added to the XML file as seen below

article xml ont

Either way, because the ChAMP XML schema is designed with the ontology references included, the metadata items can be crosswalked to the ontology by using the schema.