Statistical recognition of references in Czech court decisions

Abstract

We address the task of detection and classification of references in Czech court decisions, mainly we focus on references to other court decisions and acts. In addition, we are interested in detection of institutions that issued documents under consideration. We handle these references like entities in the task of Named Entity Recognition. We approach the task using machine learning methods, namely HMM and Perceptron algorithm and we report F-measure over 90% averaged over all entities. The results significantly outperform the systems published previously.