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--- public:nnels:cataloguing:start:subjectheadings [2018/11/01 22:27]
farrah.little [Implementation issues to consider]
+++ public:nnels:cataloguing:start:subjectheadings [2024/05/09 05:04] (current)
@@ Line 64: / Line 64: @@
 ===== Implementation questions =====
   * NNELS relies on other library, publisher and distributor records for its metadata. The most common subject headings used in these records are probably LOC (from libraries) and BISAC (from publishers). If another subject classification were to be used, NNELS would need to implement a crosswalk/mapping from LOC and/or BISAC to this subject classification in order to automate the assignment of subject terms to records. Given this...
-    * it might be easiest to utilize a subset of LOC subject headings for NNELS?
+    * it might be easiest to utilize a subset of LOC subject headings for NNELS? we would map LOC subject headings to a smaller subset (similar to what we did for our genre taxonomy)
     * we could additionally develop a BISAC to LOC (for NNELS) crosswalk?
+    * we could also map LOC to BISAC. Is there a crosswalk that already exists?
+.............................
+If we go with a simplified version of LOC we could copy catalogue from libraries easily enough.  How would we determine what the subset is?  Do we just cap the depth of the subject heading at like 2 or 3 layers or something and lop off anything beyond that?
+I think regardless, it might be worthwhile putting one BISAC heading in.  BISAC seems to use pretty natural language, and I assume the keyword searches might have an easy time hitting on one of the parts of a BISAC heading.  I do think BISAC lacks the depth to be used alone, although the lack of depth also allows a heading to be picked from the list of terms and applied with relative ease. - RM
+I am not as familiar with the collection as I would have liked to be. From the record sets I have been working on, BISAC would be a good fit. - LL

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