no code implementations • CL (ACL) 2021 • Jiangming Liu, Shay B. Cohen, Mirella Lapata, Johan Bos
Abstract We consider the task of crosslingual semantic parsing in the style of Discourse Representation Theory (DRT) where knowledge from annotated corpora in a resource-rich language is transferred via bitext to guide learning in other languages.
1 code implementation • ACL (GEM) 2021 • Chunliu Wang, Rik van Noord, Arianna Bisazza, Johan Bos
We present an end-to-end neural approach to generate English sentences from formal meaning representations, Discourse Representation Structures (DRSs).
1 code implementation • COLING 2022 • Wessel Poelman, Rik van Noord, Johan Bos
Even though many recent semantic parsers are based on deep learning methods, we should not forget that rule-based alternatives might offer advantages over neural approaches with respect to transparency, portability, and explainability.
no code implementations • LREC 2022 • Harry Bunt, Maxime Amblard, Johan Bos, Karën Fort, Bruno Guillaume, Philippe de Groote, Chuyuan Li, Pierre Ludmann, Michel Musiol, Siyana Pavlova, Guy Perrier, Sylvain Pogodalla
This paper describes the continuation of a project that aims at establishing an interoperable annotation schema for quantification phenomena as part of the ISO suite of standards for semantic annotation, known as the Semantic Annotation Framework.
no code implementations • 2 Jul 2024 • Xiulin Yang, Jonas Groschwitz, Alexander Koller, Johan Bos
Discourse Representation Theory (DRT) distinguishes itself from other semantic representation frameworks by its ability to model complex semantic and discourse phenomena through structural nesting and variable binding.
no code implementations • 19 Apr 2024 • Xiao Zhang, Gosse Bouma, Johan Bos
We introduce a neural "taxonomical" semantic parser to utilize this new representation system of predicates, and compare it with a standard neural semantic parser trained on the traditional meaning representation format, employing a novel challenge set and evaluation metric for evaluation.
no code implementations • 12 Apr 2024 • Xiao Zhang, Chunliu Wang, Rik van Noord, Johan Bos
The Parallel Meaning Bank (PMB) serves as a corpus for semantic processing with a focus on semantic parsing and text generation.
no code implementations • 3 Oct 2023 • Chunliu Wang, Rik van Noord, Johan Bos
The idea is to add pragmatic information such as topic to the meaning representation, thereby forcing either active or passive voice when given to a natural language generation system.
2 code implementations • 16 Jun 2023 • Chunliu Wang, Xiao Zhang, Johan Bos
Previous work has predominantly focused on monolingual English semantic parsing.
1 code implementation • 31 May 2023 • Chunliu Wang, Huiyuan Lai, Malvina Nissim, Johan Bos
Pre-trained language models (PLMs) have achieved great success in NLP and have recently been used for tasks in computational semantics.
no code implementations • 15 May 2023 • Simone Tedeschi, Johan Bos, Thierry Declerck, Jan Hajic, Daniel Hershcovich, Eduard H. Hovy, Alexander Koller, Simon Krek, Steven Schockaert, Rico Sennrich, Ekaterina Shutova, Roberto Navigli
In the last five years, there has been a significant focus in Natural Language Processing (NLP) on developing larger Pretrained Language Models (PLMs) and introducing benchmarks such as SuperGLUE and SQuAD to measure their abilities in language understanding, reasoning, and reading comprehension.
1 code implementation • ACL 2021 • Chunliu Wang, Rik van Noord, Arianna Bisazza, Johan Bos
Even with DRSs based on English, good results for Chinese are obtained.
1 code implementation • CONLL 2020 • Lasha Abzianidze, Johan Bos, Stephan Oepen
Discourse Representation Theory (DRT) is a formal account for representing the meaning of natural language discourse.
no code implementations • 29 Dec 2020 • Lasha Abzianidze, Rik van Noord, Chunliu Wang, Johan Bos
This paper gives a general description of the ideas behind the Parallel Meaning Bank, a framework with the aim to provide an easy way to annotate compositional semantics for texts written in languages other than English.
2 code implementations • EMNLP 2020 • Rik van Noord, Antonio Toral, Johan Bos
We combine character-level and contextual language model representations to improve performance on Discourse Representation Structure parsing.
Ranked #1 on DRS Parsing on PMB-2.2.0
no code implementations • CONLL 2020 • Stephan Oepen, Omri Abend, Lasha Abzianidze, Johan Bos, Jan Hajic, Daniel Hershcovich, Bin Li, Tim O{'}Gorman, Nianwen Xue, Daniel Zeman
Extending a similar setup from the previous year, five distinct approaches to the representation of sentence meaning in the form of directed graphs were represented in the English training and evaluation data for the task, packaged in a uniform graph abstraction and serialization; for four of these representation frameworks, additional training and evaluation data was provided for one additional language per framework.
no code implementations • WS 2019 • Johan Bos, Lasha Abzianidze
Meaning banking--creating a semantically annotated corpus for the purpose of semantic parsing or generation--is a challenging task.
no code implementations • WS 2019 • Lasha Abzianidze, Rik van Noord, Hessel Haagsma, Johan Bos
To measure similarity between two DRSs, they are represented in a clausal form, i. e. as a set of tuples.
no code implementations • LREC 2020 • Hessel Haagsma, Johan Bos, Malvina Nissim
Given the limited size of existing idiom corpora, we aim to enable progress in automatic idiom processing and linguistic analysis by creating the largest-to-date corpus of idioms for English.
no code implementations • 20 Nov 2019 • Hessel Haagsma, Malvina Nissim, Johan Bos
To further progress on the extraction and disambiguation of potentially idiomatic expressions, larger corpora of PIEs are required.
no code implementations • DMR (COLING) 2020 • Johan Bos
The AMR (Abstract Meaning Representation) formalism for representing meaning of natural language sentences was not designed to deal with scope and quantifiers.
no code implementations • WS 2019 • Kilian Evang, Lasha Abzianidze, Johan Bos
We present the first open-source graphical annotation tool for combinatory categorial grammar (CCG), and the first set of detailed guidelines for syntactic annotation with CCG, for four languages: English, German, Italian, and Dutch.
1 code implementation • WS 2019 • Hitomi Yanaka, Koji Mineshima, Daisuke Bekki, Kentaro Inui, Satoshi Sekine, Lasha Abzianidze, Johan Bos
Monotonicity reasoning is one of the important reasoning skills for any intelligent natural language inference (NLI) model in that it requires the ability to capture the interaction between lexical and syntactic structures.
no code implementations • WS 2019 • Rik van Noord, Antonio Toral, Johan Bos
Recently, sequence-to-sequence models have achieved impressive performance on a number of semantic parsing tasks.
Ranked #2 on DRS Parsing on PMB-3.0.0
1 code implementation • SEMEVAL 2019 • Hitomi Yanaka, Koji Mineshima, Daisuke Bekki, Kentaro Inui, Satoshi Sekine, Lasha Abzianidze, Johan Bos
To investigate this issue, we introduce a new dataset, called HELP, for handling entailments with lexical and logical phenomena.
1 code implementation • TACL 2018 • Rik van Noord, Lasha Abzianidze, Antonio Toral, Johan Bos
Neural methods have had several recent successes in semantic parsing, though they have yet to face the challenge of producing meaning representations based on formal semantics.
Ranked #3 on DRS Parsing on PMB-3.0.0
no code implementations • EMNLP 2018 • Mostafa Abdou, Artur Kulmizev, Vinit Ravishankar, Lasha Abzianidze, Johan Bos
We investigate the effects of multi-task learning using the recently introduced task of semantic tagging.
no code implementations • COLING 2018 • Hessel Haagsma, Malvina Nissim, Johan Bos
Disambiguation of potentially idiomatic expressions involves determining the sense of a potentially idiomatic expression in a given context, e. g. determining that make hay in {`}Investment banks made hay while takeovers shone.
2 code implementations • LREC 2018 • Rik van Noord, Lasha Abzianidze, Hessel Haagsma, Johan Bos
A pilot study is performed to automatically find changes in meaning by comparing meaning representations of translations.
no code implementations • WS 2017 • Lasha Abzianidze, Johan Bos
The paper proposes the task of universal semantic tagging---tagging word tokens with language-neutral, semantically informative tags.
2 code implementations • 28 May 2017 • Rik van Noord, Johan Bos
We evaluate the character-level translation method for neural semantic parsing on a large corpus of sentences annotated with Abstract Meaning Representations (AMRs).
Ranked #26 on AMR Parsing on LDC2017T10
no code implementations • SEMEVAL 2017 • Rik van Noord, Johan Bos
We evaluate a semantic parser based on a character-based sequence-to-sequence model in the context of the SemEval-2017 shared task on semantic parsing for AMRs.
no code implementations • WS 2017 • Johan Bos
In this talk I will discuss the analysis of several semantic phenomena that need meaning representations that can describe attributes of propositional contexts.
1 code implementation • EACL 2017 • Lasha Abzianidze, Johannes Bjerva, Kilian Evang, Hessel Haagsma, Rik van Noord, Pierre Ludmann, Duc-Duy Nguyen, Johan Bos
The Parallel Meaning Bank is a corpus of translations annotated with shared, formal meaning representations comprising over 11 million words divided over four languages (English, German, Italian, and Dutch).
no code implementations • COLING 2016 • Kilian Evang, Johan Bos
We propose a method for learning semantic CCG parsers by projecting annotations via a parallel corpus.
1 code implementation • COLING 2016 • Johannes Bjerva, Barbara Plank, Johan Bos
We propose a novel semantic tagging task, sem-tagging, tailored for the purpose of multilingual semantic parsing, and present the first tagger using deep residual networks (ResNets).
no code implementations • LREC 2012 • Valerio Basile, Johan Bos, Kilian Evang, Noortje Venhuizen
What would be a good method to provide a large collection of semantically annotated texts with formal, deep semantics rather than shallow?