*5.4. Case Studies*

In order to present the power of quasi-identifiers and also to identify some of the potential quasi-identifiers in the legal domain, research has been conducted using publicly available legal cases in Hungarian.

#### 5.4.1. Datasets and Search Framework

Our case study was conducted by using the LEXPERT service (https://www.lexpert.hu) (accessed on 1 May 2021), which is a self-developed online database of the freely available Hungarian legal cases. LEXPERT ensures an Elasticsearch-based search platform for the legal documents and links the connecting documents and law references. The following documents are included in this database:

