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Plenary Lecture

Lexical Knowledge Representation

Assistant Professor Velislava Stoykova
Institute for Bulgarian Language
Bulgarian Academy of Sciences
Sofia, Bulgaria
E-mail: vili1@bas.bg

Abstract: The presentation of Lexical Knowledge (LK) is a very important area of Natural Language Processing (NLP) which uses various approaches to model lexical information for different applications.
The traditional scheme for LK representation is given at the dictionaries where the context of a related headword is presented by giving its different meanings (possibly with sentence examples). Dictionaries can be presented also in computer-readable and computer-tractable ways by using the encodings and approaches for deep or shallow parsing, so to be processed by computers depending on the specific tasks.
At the same time, NLP applications require a more formal way of representation like formal grammars. We will give examples by using formal grammar theories, and particularly the DATR language for lexical knowledge representation to analyse both lexical and grammar knowledge representation approaches, which use semantic networks and inheritance type hierarchies. We will compare them with the related application of Universal Networking Language (UNL) lexical knowledge representation examples, which also use semantic networks.
Finally, we will discuss these approaches with respect to their machine translation use and application.

Brief Biography of the Speaker: Assist. Prof. Dr. Velislava Stoykova has received her MA degree from Sofia University. In 2004 she has received a PhD in computational linguistics and afterward, she is working active in the field. Her major areas of interest are: language modelling, natural language processing, computational lexicography, e-learning. From 1990 to 1995 she worked at the Bulgarian Academy of Sciences, Institute for Parallel Processing as a programmer. From 1995 to 2011 she joined the research team of the Institute for Bulgarian language at the Bulgarian Academy of Sciences as a researcher. From 2011 she works at the Bulgarian Academy of Sciences, Institute for Bulgarian language as an assistant professor.
Assist. Prof. Dr. Stoykova has one book, more than 30 published papers in international conference proceedings and scientific journals, and is a co-author of two dictionaries. She is a member of the research team at the Institute for Bulgarian Language. She had worked on many research projects (national and international) as a member of the research team and as a project leader. Assist. Prof. Dr. Stoykova is a member of Bulgarian Lexicographic Society and a member of Bulgarian Artificial Intelligence Association.

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