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Research - Papers

Explore a selection of our published work on a variety of key research challenges in AI.

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SciBERT: A Pretrained Language Model for Scientific Text

Iz BeltagyKyle LoArman Cohan
2019
EMNLP

Obtaining large-scale annotated data for NLP tasks in the scientific domain is challenging and expensive. We release SciBERT, a pretrained language model based on BERT (Devlin et al., 2018) to… 

SpanBERT: Improving Pre-training by Representing and Predicting Spans

Mandar JoshiDanqi ChenYinhan LiuOmer Levy
2019
EMNLP

We present SpanBERT, a pre-training method that is designed to better represent and predict spans of text. Our approach extends BERT by (1) masking contiguous random spans, rather than random… 

GrapAL: Connecting the Dots in Scientific Literature

Christine BettsJoanna PowerWaleed Ammar
2019
ACL

We introduce GrapAL (Graph database of Academic Literature), a versatile tool for exploring and investigating a knowledge base of scientific literature, that was semi-automatically constructed using… 

ScispaCy: Fast and Robust Models for Biomedical Natural Language Processing

Mark NeumannDaniel KingIz BeltagyWaleed Ammar
2019
ACL • BioNLP Workshop

Despite recent advances in natural language processing, many statistical models for processing text perform extremely poorly under domain shift. Processing biomedical and clinical text is a… 

CEDR: Contextualized Embeddings for Document Ranking

Sean MacAvaneyAndrew YatesArman CohanNazli Goharian
2019
SIGIR

Although considerable attention has been given to neural ranking architectures recently, far less attention has been paid to the term representations that are used as input to these models. In this… 

Ontology-Aware Clinical Abstractive Summarization

Sean MacAvaneySajad SotudehArman CohanRoss W. Filice
2019
SIGIR

Automatically generating accurate summaries from clinical reports could save a clinician's time, improve summary coverage, and reduce errors. We propose a sequence-to-sequence abstractive… 

Quantifying Sex Bias in Clinical Studies at Scale With Automated Data Extraction

Sergey FeldmanWaleed AmmarKyle LoOren Etzioni
2019
JAMA

Importance: Analyses of female representation in clinical studies have been limited in scope and scale. Objective: To perform a large-scale analysis of global enrollment sex bias in clinical… 

Combining Distant and Direct Supervision for Neural Relation Extraction

Iz BeltagyKyle LoWaleed Ammar
2019
NAACL

In relation extraction with distant supervision, noisy labels make it difficult to train quality models. Previous neural models addressed this problem using an attention mechanism that attends to… 

Structural Scaffolds for Citation Intent Classification in Scientific Publications

Arman CohanWaleed AmmarMadeleine van ZuylenField Cady
2019
NAACL

Identifying the intent of a citation in scientific papers (e.g., background information, use of methods, comparing results) is critical for machine reading of individual publications and automated… 

Citation Count Analysis for Papers with Preprints

Sergey FeldmanKyle LoWaleed Ammar
2018
ArXiv

We explore the degree to which papers prepublished on arXiv garner more citations, in an attempt to paint a sharper picture of fairness issues related to prepublishing. A paper’s citation count is…