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gbv / coli-ana

API to analyze DDC numbers
https://coli-conc.gbv.de/coli-ana/app/
MIT License
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Add MARC result format #15

Closed nichtich closed 1 year ago

nichtich commented 3 years ago

See MARC Field 765 (classification format) and MARC Field 085 (bibliographic format).

nichtich commented 3 years ago

Example notation 787.219369 (from documentation of field 765)

PICA+:

045H/10 $eDDC23ger$a787.219369$c787.2$d784-788:18-19$d784.19369$Acoli-ana

The current mapping to PICA is wrong (#44) this should be:

045H/10 $eDDC23ger$a787.219369$c787.2$d784-788:1$d784.19369$Acoli-ana

MARC (repeated for each step with the number being analyzed in $u: PICA $a = MARC $u)

765 1# $b787.2$a784 $c788$w784$c788 $t1$u787.219369
765 1# $b787.21$a784 $c788$v18$c19 $r784.1$s9369$u787.219369

Relevant steps from coli-ana:

787.219369 
787.2-----    base number 787.2 (MARC $b = PICA $c) 
----------    784 (first MARC field: where instructions are found)*
---.-1----    784-788:1 (first MARC field)
---.-19---    784-788:18-19 (second MARC field: where instructions are found)*
---.--9369    784.19369 (second MARC field)

It looks like MARC contains information where a rule is found, not what* kind of rule has been applied. We don't always have this information in coli-ana.

nichtich commented 2 years ago

Requires at least #22.