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RDF Property and Datatype Usage Scanner

This is a tool to survey the usage of properties and datatypes in RDF dataset files (as the Web Data Commons) on the web.

Usage

How to start the experiment:

  1. Preparation: Clone the repository and run mvn clean package to build the tool.
  2. Run:
  • java -jar target/Scanner.jar --category <category_name> --list <list_file_url> <database_folder> to schedule files to scan
  • ./measure.sh <database_folder> to start the measure in background
  • java -jar target/Scanner.jar --results <result_file.csv.gz> <database_folder> to export measurements as a gzipped CSV
  • java -jar target/Scanner.jar --errors <error_file.csv.gz> <database_folder> to export errors as a gzipped CSV

For automatic restart on Linux edit crontab using crontab -e and add the line: @reboot bash <path to script>/measure.sh <database_folder> (keep an empty line at the end of the document)