Search Results for author: Brendan O'Connor

Found 25 papers, 8 papers with code

A Comparative Analysis Of Latent Regressor Losses For Singing Voice Conversion

no code implementations27 Feb 2023 Brendan O'Connor, Simon Dixon

We propose an alternative loss component in a loss function that is otherwise well-established among VC tasks, which has been shown to improve our model's SVC performance.

Contrastive Learning Disentanglement +1

Examining Political Rhetoric with Epistemic Stance Detection

1 code implementation29 Dec 2022 Ankita Gupta, Su Lin Blodgett, Justin H Gross, Brendan O'Connor

Participants in political discourse employ rhetorical strategies -- such as hedging, attributions, or denials -- to display varying degrees of belief commitments to claims proposed by themselves or others.

Stance Detection

Corpus-Guided Contrast Sets for Morphosyntactic Feature Detection in Low-Resource English Varieties

1 code implementation FieldMatters (COLING) 2022 Tessa Masis, Anissa Neal, Lisa Green, Brendan O'Connor

The study of language variation examines how language varies between and within different groups of speakers, shedding light on how we use language to construct identities and how social contexts affect language use.

Corpus-Level Evaluation for Event QA: The IndiaPoliceEvents Corpus Covering the 2002 Gujarat Violence

1 code implementation Findings (ACL) 2021 Andrew Halterman, Katherine A. Keith, Sheikh Muhammad Sarwar, Brendan O'Connor

Automated event extraction in social science applications often requires corpus-level evaluations: for example, aggregating text predictions across metadata and unbiased estimates of recall.

Document Ranking Event Extraction +6

Analyzing Gender Bias within Narrative Tropes

1 code implementation EMNLP (NLP+CSS) 2020 Dhruvil Gala, Mohammad Omar Khursheed, Hannah Lerner, Brendan O'Connor, Mohit Iyyer

Popular media reflects and reinforces societal biases through the use of tropes, which are narrative elements, such as archetypal characters and plot arcs, that occur frequently across media.

Uncertainty over Uncertainty: Investigating the Assumptions, Annotations, and Text Measurements of Economic Policy Uncertainty

no code implementations EMNLP (NLP+CSS) 2020 Katherine A. Keith, Christoph Teichmann, Brendan O'Connor, Edgar Meij

We find for this application (1) some annotator disagreements of economic policy uncertainty can be attributed to ambiguity in language, and (2) switching measurements from keyword-matching to supervised machine learning classifiers results in low correlation, a concerning implication for the validity of the index.

Text and Causal Inference: A Review of Using Text to Remove Confounding from Causal Estimates

no code implementations ACL 2020 Katherine A. Keith, David Jensen, Brendan O'Connor

For example, an individual's entire history of social media posts or the content of a news article could provide a rich measurement of multiple confounders.

Causal Inference

Investigating Sports Commentator Bias within a Large Corpus of American Football Broadcasts

1 code implementation IJCNLP 2019 Jack Merullo, Luke Yeh, Abram Handler, Alvin Grissom II, Brendan O'Connor, Mohit Iyyer

Sports broadcasters inject drama into play-by-play commentary by building team and player narratives through subjective analyses and anecdotes.

Query-focused Sentence Compression in Linear Time

no code implementations19 Apr 2019 Abram Handler, Brendan O'Connor

Search applications often display shortened sentences which must contain certain query terms and must fit within the space constraints of a user interface.

Sentence Sentence Compression

Human acceptability judgements for extractive sentence compression

no code implementations1 Feb 2019 Abram Handler, Brian Dillon, Brendan O'Connor

Recent approaches to English-language sentence compression rely on parallel corpora consisting of sentence-compression pairs.

Sentence Sentence Compression

Evaluating Syntactic Properties of Seq2seq Output with a Broad Coverage HPSG: A Case Study on Machine Translation

no code implementations6 Sep 2018 Johnny Tian-Zheng Wei, Khiem Pham, Brian Dillon, Brendan O'Connor

We explore whether such output belongs to a formal and realistic grammar, by employing the English Resource Grammar (ERG), a broad coverage, linguistically precise HPSG-based grammar of English.

Machine Translation Translation

Monte Carlo Syntax Marginals for Exploring and Using Dependency Parses

1 code implementation NAACL 2018 Katherine A. Keith, Su Lin Blodgett, Brendan O'Connor

Dependency parsing research, which has made significant gains in recent years, typically focuses on improving the accuracy of single-tree predictions.

Dependency Parsing Sentence

Rookie: A unique approach for exploring news archives

no code implementations6 Aug 2017 Abram Handler, Brendan O'Connor

News archives are an invaluable primary source for placing current events in historical context.

Racial Disparity in Natural Language Processing: A Case Study of Social Media African-American English

no code implementations30 Jun 2017 Su Lin Blodgett, Brendan O'Connor

We highlight an important frontier in algorithmic fairness: disparity in the quality of natural language processing algorithms when applied to language from authors of different social groups.

Fairness Language Identification

Visualizing textual models with in-text and word-as-pixel highlighting

no code implementations20 Jun 2016 Abram Handler, Su Lin Blodgett, Brendan O'Connor

We explore two techniques which use color to make sense of statistical text models.

Learning Frames from Text with an Unsupervised Latent Variable Model

no code implementations28 Jul 2013 Brendan O'Connor

We develop a probabilistic latent-variable model to discover semantic frames---types of events and their participants---from corpora.

Diffusion of Lexical Change in Social Media

no code implementations18 Oct 2012 Jacob Eisenstein, Brendan O'Connor, Noah A. Smith, Eric P. Xing

Computer-mediated communication is driving fundamental changes in the nature of written language.

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