Search Results for author: Federico Fancellu

Found 22 papers, 3 papers with code

Revisiting text decomposition methods for NLI-based factuality scoring of summaries

no code implementations30 Nov 2022 John Glover, Federico Fancellu, Vasudevan Jagannathan, Matthew R. Gormley, Thomas Schaaf

In this paper we systematically compare different granularities of decomposition -- from document to sub-sentence level, and we show that the answer is no.

Natural Language Inference Sentence

Visual Semantic Parsing: From Images to Abstract Meaning Representation

no code implementations26 Oct 2022 Mohamed Ashraf Abdelsalam, Zhan Shi, Federico Fancellu, Kalliopi Basioti, Dhaivat J. Bhatt, Vladimir Pavlovic, Afsaneh Fazly

The success of scene graphs for visual scene understanding has brought attention to the benefits of abstracting a visual input (e. g., image) into a structured representation, where entities (people and objects) are nodes connected by edges specifying their relations.

Scene Understanding Semantic Parsing

Dependency parsing with structure preserving embeddings

no code implementations EACL 2021 {\'A}kos K{\'a}d{\'a}r, Lan Xiao, Mete Kemertas, Federico Fancellu, Allan Jepson, Afsaneh Fazly

We do so by casting dependency parsing as a tree embedding problem where we incorporate geometric properties of dependency trees in the form of training losses within a graph-based parser.

Dependency Parsing Sentence

How coherent are neural models of coherence?

no code implementations COLING 2020 Leila Pishdad, Federico Fancellu, Ran Zhang, Afsaneh Fazly

Despite the recent advances in coherence modelling, most such models including state-of-the-art neural ones, are evaluated on either contrived proxy tasks such as the standard order discrimination benchmark, or tasks that require special expert annotation.

Accurate polyglot semantic parsing with DAG grammars

no code implementations Findings of the Association for Computational Linguistics 2020 Federico Fancellu, {\'A}kos K{\'a}d{\'a}r, Ran Zhang, Afsaneh Fazly

We significantly improve upon this work, by proposing a simpler architecture as well as more efficient training and inference algorithms that can always guarantee the well-formedness of the generated graphs.

Graph Generation Semantic Parsing

Neural Networks for Cross-lingual Negation Scope Detection

no code implementations4 Oct 2018 Federico Fancellu, Adam Lopez, Bonnie Webber

Negation scope has been annotated in several English and Chinese corpora, and highly accurate models for this task in these languages have been learned from these annotations.

Cross-Lingual Word Embeddings Negation +1

Evaluating Machine Translation Performance on Chinese Idioms with a Blacklist Method

no code implementations LREC 2018 Yutong Shao, Rico Sennrich, Bonnie Webber, Federico Fancellu

Our evaluation confirms that a sizable number of idioms in our test set are mistranslated (46. 1%), that literal translation error is a common error type, and that our blacklist method is effective at identifying literal translation errors.

Machine Translation Translation +1

Universal Dependencies to Logical Form with Negation Scope

no code implementations WS 2017 Federico Fancellu, Siva Reddy, Adam Lopez, Bonnie Webber

Many language technology applications would benefit from the ability to represent negation and its scope on top of widely-used linguistic resources.

Negation

Detecting negation scope is easy, except when it isn't

no code implementations EACL 2017 Federico Fancellu, Adam Lopez, Bonnie Webber, Hangfeng He

Several corpora have been annotated with negation scope{---}the set of words whose meaning is negated by a cue like the word {``}not{''}{---}leading to the development of classifiers that detect negation scope with high accuracy.

Negation

Neural Networks for Negation Cue Detection in Chinese

no code implementations WS 2017 Hangfeng He, Federico Fancellu, Bonnie Webber

In particular, the use of a character-based model allows us to capture characteristics of negation cues in Chinese using word-embedding information only.

Feature Engineering Negation +2

Universal Dependencies to Logical Forms with Negation Scope

1 code implementation10 Feb 2017 Federico Fancellu, Siva Reddy, Adam Lopez, Bonnie Webber

Many language technology applications would benefit from the ability to represent negation and its scope on top of widely-used linguistic resources.

Negation

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