K10plus DDC

This repository contains scripts to analyze, convert and publish Dewey Decimal Classification (DDC) numbers found K10plus catalogue. The analysis is mainly based on coli-ana DDC number decomposition.

See subdirectory publication for script to generate the data publication https://doi.org/10.5281/zenodo.10569321

Installation

npm ci

Usage

analyze.js

Read a list of (numerically sorted) DDC numbers and generate analysis with coli-ana

k10plus-patch.js

The script bin/k10plus-patch.js

reads PICA+ records (or PPNs to retrieve records from K10plus)
extracts DDC fields from the records
retrieves DDC analysis (cached in a local database)
and emits PICA Patch files to modify records

Usage: k10plus-patch [options] < file

Check and extend DDC numbers in PICA records of K10plus catalogue

Options:
  -a, --api <URL>        coli-ana API endpoint
  -c, --continue <ppn>   continue after given PPN (expect sorted)
  -f, --format <name>    PICA+ serialization (default: plain)
  -i, --input <file>     input file (default: - for STDIN)
  -d, --database <file>  optional SQLite file for caching
  -p, --ppns             input is list of PPNs instead of PICA records
  -h, --help             display help for command

simplify-for-pdf.jq

Given the full analysis from coli-ana API in JSKOS format as published at https://doi.org/10.5281/zenodo.10569320, this jq script can be used to simplify the JSKOS records for creation of PDF files for each DDC number:

zcat ddc-decomposition.ndjson.gz | jq -c -f simplify-for-pdf.jq -c > ddc-pdf-data.ndjson

count.js

Calculate frequency of individual DDC elements in analysis result and emit as CSV or JSKOS concept list

Data in this repository

ddcs sorted DDC numbers found in K10plus with number of occurrences. Data generated from K10plus Subjects.

gbv/k10plus-ddc