Search Results for author: Daniel Fernández-González

Found 17 papers, 11 papers with code

Structured Sentiment Analysis as Transition-based Dependency Parsing

no code implementations9 May 2023 Daniel Fernández-González

Structured sentiment analysis (SSA) aims to automatically extract people's opinions from a text in natural language and adequately represent that information in a graph structure.

Sentence Sentiment Analysis +1

Shift-Reduce Task-Oriented Semantic Parsing with Stack-Transformers

no code implementations21 Oct 2022 Daniel Fernández-González

In this article, we advance the research on shift-reduce semantic parsing for task-oriented dialog.

Constituency Parsing Semantic Parsing +2

Transition-based Semantic Role Labeling with Pointer Networks

1 code implementation20 May 2022 Daniel Fernández-González

Semantic role labeling (SRL) focuses on recognizing the predicate-argument structure of a sentence and plays a critical role in many natural language processing tasks such as machine translation and question answering.

Machine Translation Question Answering +2

Discontinuous Grammar as a Foreign Language

1 code implementation20 Oct 2021 Daniel Fernández-González, Carlos Gómez-Rodríguez

In order to achieve deep natural language understanding, syntactic constituent parsing is a vital step, highly demanded by many artificial intelligence systems to process both text and speech.

Machine Translation Natural Language Understanding +1

Dependency Parsing with Bottom-up Hierarchical Pointer Networks

1 code implementation20 May 2021 Daniel Fernández-González, Carlos Gómez-Rodríguez

Dependency parsing is a crucial step towards deep language understanding and, therefore, widely demanded by numerous Natural Language Processing applications.

Dependency Parsing Sentence

Reducing Discontinuous to Continuous Parsing with Pointer Network Reordering

1 code implementation EMNLP 2021 Daniel Fernández-González, Carlos Gómez-Rodríguez

Discontinuous constituent parsers have always lagged behind continuous approaches in terms of accuracy and speed, as the presence of constituents with discontinuous yield introduces extra complexity to the task.

Sentence

Multitask Pointer Network for Multi-Representational Parsing

1 code implementation21 Sep 2020 Daniel Fernández-González, Carlos Gómez-Rodríguez

We propose a transition-based approach that, by training a single model, can efficiently parse any input sentence with both constituent and dependency trees, supporting both continuous/projective and discontinuous/non-projective syntactic structures.

Sentence

Transition-based Semantic Dependency Parsing with Pointer Networks

1 code implementation27 May 2020 Daniel Fernández-González, Carlos Gómez-Rodríguez

Transition-based parsers implemented with Pointer Networks have become the new state of the art in dependency parsing, excelling in producing labelled syntactic trees and outperforming graph-based models in this task.

Dependency Parsing Semantic Dependency Parsing +1

Enriched In-Order Linearization for Faster Sequence-to-Sequence Constituent Parsing

1 code implementation27 May 2020 Daniel Fernández-González, Carlos Gómez-Rodríguez

Sequence-to-sequence constituent parsing requires a linearization to represent trees as sequences.

Discontinuous Constituent Parsing with Pointer Networks

1 code implementation5 Feb 2020 Daniel Fernández-González, Carlos Gómez-Rodríguez

One of the most complex syntactic representations used in computational linguistics and NLP are discontinuous constituent trees, crucial for representing all grammatical phenomena of languages such as German.

Dependency Parsing Part-Of-Speech Tagging +1

Left-to-Right Dependency Parsing with Pointer Networks

2 code implementations20 Mar 2019 Daniel Fernández-González, Carlos Gómez-Rodríguez

We propose a novel transition-based algorithm that straightforwardly parses sentences from left to right by building $n$ attachments, with $n$ being the length of the input sentence.

Dependency Parsing Sentence

Dynamic Oracles for Top-Down and In-Order Shift-Reduce Constituent Parsing

1 code implementation25 Oct 2018 Daniel Fernández-González, Carlos Gómez-Rodríguez

In addition, by improving the performance of the state-of-the-art in-order shift-reduce parser, we achieve the best accuracy to date (92. 0 F1) obtained by a fully-supervised single-model greedy shift-reduce constituent parser on the WSJ benchmark.

A Dynamic Oracle for Linear-Time 2-Planar Dependency Parsing

no code implementations14 May 2018 Daniel Fernández-González, Carlos Gómez-Rodríguez

We propose an efficient dynamic oracle for training the 2-Planar transition-based parser, a linear-time parser with over 99% coverage on non-projective syntactic corpora.

Dependency Parsing

Faster Shift-Reduce Constituent Parsing with a Non-Binary, Bottom-Up Strategy

no code implementations21 Apr 2018 Daniel Fernández-González, Carlos Gómez-Rodríguez

An increasingly wide range of artificial intelligence applications rely on syntactic information to process and extract meaning from natural language text or speech, with constituent trees being one of the most widely used syntactic formalisms.

Binarization Machine Translation +1

Non-Projective Dependency Parsing with Non-Local Transitions

1 code implementation25 Oct 2017 Daniel Fernández-González, Carlos Gómez-Rodríguez

We present a novel transition system, based on the Covington non-projective parser, introducing non-local transitions that can directly create arcs involving nodes to the left of the current focus positions.

Dependency Parsing

A Full Non-Monotonic Transition System for Unrestricted Non-Projective Parsing

no code implementations11 Jun 2017 Daniel Fernández-González, Carlos Gómez-Rodríguez

Restricted non-monotonicity has been shown beneficial for the projective arc-eager dependency parser in previous research, as posterior decisions can repair mistakes made in previous states due to the lack of information.

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