A Reevaluation of Dependency Structure Evaluation

In this paper we will develop the argument indirectly raised by the organizer of 2014 Dependency Parsing for Information Extraction task when they classify 19 relations out of 45 as those semantically relevant for the evaluation, and exclude the others which confirms our stance which considers the new paradigm of Dependency parsing evaluation favoured in comparison to the previous parsing scheme based mainly on constituent or phrase structure evaluation. We will also speak in favour of rule-based dependency parsing and against statistically based dependency parsers for reasons related to the role played by the SUBJect relation in Italian

Formal aspects and parsing issues of dependency theory

The paper investigates the problem of providing a formal device for the dependency approach to syntax, and to link it with a parsing model. After reviewing the basic tenets of the paradigm and the few existing mathematical results, we describe a dependency formalism which is able to deal with long-distance dependencies. Finally, we present an Earley-style parser for the formalism and discuss the (polynomial) complexity results. 1