Report:Inspec/Special Indexing/Other Indexing
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Other Indexing
The Chemical, Astronomical, and Numerical Indexes in Inspec can be thought of as very specific controlled indexes. Additionally, IPC Classification Codes have been added to Inspec.
Astronomical indexing uses accepted conventions for identifying coordinates and objects in space, and can help searchers pinpoint relevant hits. Astronomical indexing is present from January 1995 onwards, and contains designations including both name based acronyms, and catalog-based acronyms (which consist of an acronym for the catalog followed by the catalog entry number). These astronomical terms are governed by the International Astronomical Union.
Numerical Indexing provides a standardized interpretation of units based on an Inspec defined numerical thesaurus for searching minimum, maximum, or ranges of values. This includes words related to numerical terms such as temperature or energy that correlate to units like Kelvin or Joules. For instance, a search can be initiated to find the term “nanotubes” in the controlled index, and then combined with numerical indexing to find records that also include temperature data, such as in a table of experimental results. According to a Dialog search guide,"numerical indexing is controlled according to INSPEC's Numerical Data Thesaurus," and "if the quantity being searched is given in different units of measure than those used in INSPEC's Numerical Data Thesaurus, it must be converted to the preferred thesaurus form for the search."[1] The success of this kind of search is, again, dependent on whether Inspec indexers have tagged the record with this numerical data. Like chemical indexing, numerical indexing was started in January 1987, and records entered prior to this date contained numerical information in the uncontrolled index field, if available.
IET began adding IPC Classification Codes to records starting in January 2010.[2] IPC codes are being added to records retroactively back to 1969, and the IET approximates that 75% of records will contain IPC codes, with an average of two codes assigned to each record.[3] A reference list of IPC codes will be maintained by IET, and a list of IPC codes used in Inspec (as of January 2010) can be found here; IPC codes remain property of WIPO.
Sources
- ↑ "Numerical Indexing Fields in INSPEC." Dialog website, http://support.dialog.com/searchaids/dialog/f2_num_index.shtml. Accessed June 10, 2011.
- ↑ "IPC patent codes." Inspec website, http://www.theiet.org/publishing/inspec/about/records/IPC.cfm. Accessed on March 17, 2010.
- ↑ "INSPEC - IPC codes have been added to the backfile (1969-2009)." STN International website, http://bit.ly/wA5Blq. Accessed June 10, 2011.
