Measuring the quality of large-scale automated classification systems applied to online job advertisement data

Measuring the quality – a quality assessment in general provides insight into the quality and usability of web-scraped data for producing official statistics. The quality assessment in this presentation is about Online Job Advertisements (OJA).

The OJA data was assessed in a couple of ways by members of the Web Intelligence Network project. Firstly, the quality and stability of the sources were assessed with the help of quality indicators that were formulated for this task. Secondly, the accuracy of the classification of the OJA data was assessed through annotation exercises. The event will present the quality indicators and how they are operationalised in a reproducible manner for several countries.

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