Copyright © 2013 Open Geospatial Consortium.
31 Will approved and under development e.g., REST, Provenance OGC Standards
be included? Will information about the OGC Network implementation be included?
DISR vs. RAP Advisor. The DoD IT Standards Registry DISR is a single, unifying DoD registry for approved information technology IT and national
security systems NSS standards and standards profiles. A user suggested that the questionnaire used in the DISR for creating a standards “TV-1” profile would
be a good thing to compare with the RAP Advisor.
9.2.3 Functional Errors
ORM Text Search Users assigned comparable ratings to the ORM Keyword and OGC DWG search
methods. Testers rated the Keyword Search method as “good” because of the RAP Advisor’s limitation to only ORM terms. Many testers found no results or “false positive”
results and recommended that the keyword lexicon be greatly expanded. Some of the erroneous keyword search results included:
“Service Architecture” – several ORM clauses appear unrelated to the search term and there were more results with this term than when using “ORM Service
Architecture; “Results for ORM Clause Selections” – four OGC Standards were displayed yet
only two OGC Standards should have appeared; “Human Geography” – no results were obtained;
It was suggested that installing a semantic search engine to support the keyword search method, as originally proposed in the RAP Advisor conceptual design, may offer a
solution to the free text search limitations. Rather than relying exclusively on preset ORM keywords, a semantic engine would be able to match the search queries to a user’s
context and return results within that context. In other words, a semantic engine can learn and expand the keyword vocabulary based on user queries and through association
build a more responsive system. Another tester suggested that the RAP Advisor Keyword Search function could be
improved by developing an “Advanced Search” capability. Using an advanced search engine with the Boolean operators AND, OR, and NOT, could broaden or narrow a
search by combining words or phrases. Alternatively, automatically populating the Keyword Search entries with the initial project description and other data that a user
identified as their topics of interest also could assist in text searching. Testers also questioned how acronyms and OGC standards under development are
handled in Advisor text searches. For example, OGC recently sought
public comment on the candidate OGC GeoServices “REST” applications programming interface API
standard. The REST API provides a standard way for Web clients to communicate with geospatial technologies based on Representational State Transfer REST principles, yet
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Copyright © 2013 Open Geospatial Consortium.
there is no connection between these terms e.g., REST and Representational in the Advisor.
A fuller description of why OGC standards under development are not included in the RAP Advisor is provided below.
OGC Domain Work Groups One of the most controversial issues about the RAP Advisor design was the use of DWGs
in identifying and applying OGC standards. Some users said that “Domain” is a presumptive term because it is not relevant to non-OGC members, and it might be useful
to substitute an alternative term such as OGC “functions.” Others suggested that the initial list of 31 Domains provided in the Advisor was not sufficiently descriptive and
DWG definitions were needed. Still others recommended that “keywords” associated with each DWG are needed to better acquaint users with the Domains and potentially
expand their membership to new users. If Domains continue to be one of the RAP Advisor discovery methods, a more complete
list of DWGs is needed, but testers suggested a more understandable organization of Domains is needed to better classify them for review. For example, one tester asked about
the number of Domains for the Web Mapping Server WMS. He suggested that users may want to “drill down” on the Domains but the existing terms are not sufficiently
descriptive. Concerning the list of Domains in the RAP Advisor, another user suggested that a “list
all” and “de-select” option is needed to allow users to customize their discovery strategies.
9.2.4 General Improvements
