Ivajlo Radev


2019

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Modeling MWEs in BTB-WN
Laska Laskova | Petya Osenova | Kiril Simov | Ivajlo Radev | Zara Kancheva
Proceedings of the Joint Workshop on Multiword Expressions and WordNet (MWE-WN 2019)

The paper presents the characteristics of the predominant types of MultiWord expressions (MWEs) in the BulTreeBank WordNet – BTB-WN. Their distribution in BTB-WN is discussed with respect to the overall hierarchical organization of the lexical resource. Also, a catena-based modeling is proposed for handling the issues of lexical semantics of MWEs.

2017

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Annotation of Clinical Narratives in Bulgarian language
Ivajlo Radev | Kiril Simov | Galia Angelova | Svetla Boytcheva
Proceedings of the Biomedical NLP Workshop associated with RANLP 2017

In this paper we describe annotation process of clinical texts with morphosyntactic and semantic information. The corpus contains 1,300 discharge letters in Bulgarian language for patients with Endocrinology and Metabolic disorders. The annotated corpus will be used as a Gold standard for information extraction evaluation of test corpus of 6,200 discharge letters. The annotation is performed within Clark system — an XML Based System For Corpora Development. It provides mechanism for semi-automatic annotation first running a pipeline for Bulgarian morphosyntactic annotation and a cascaded regular grammar for semantic annotation is run, then rules for cleaning of frequent errors are applied. At the end the result is manually checked. At the end we hope also to be able to adapted the morphosyntactic tagger to the domain of clinical narratives as well.