Ben Zhou

University of Pennsylvania
http://xuanyu.me
Publications10
h-index8
Citations323
Highly Influential Citations31
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"Going on a vacation" takes longer than "Going for a walk": A Study of Temporal Commonsense Understanding
TLDR
It is found that the best current methods used on MCTACO are still far behind human performance, by about 20%, and several directions for improvement are discussed. Expand
CogCompTime: A Tool for Understanding Time in Natural Language
TLDR
This paper introduces CogCompTime, a system that has these two important functionalities and incorporates the most recent progress, achieves state-of-the-art performance, and is publicly available at http://cogcomp.org/page/publication_view/844. Expand
Evaluating Models’ Local Decision Boundaries via Contrast Sets
TLDR
A more rigorous annotation paradigm for NLP that helps to close systematic gaps in the test data, and recommends that the dataset authors manually perturb the test instances in small but meaningful ways that (typically) change the gold label, creating contrast sets. Expand
Zero-Shot Open Entity Typing as Type-Compatible Grounding
TLDR
A zero-shot entity typing approach that requires no annotated data and can flexibly identify newly defined types is proposed that is shown to be competitive with state-of-the-art supervised NER systems, and to outperform them on out- of-training datasets. Expand
Evaluating NLP Models via Contrast Sets
TLDR
A new annotation paradigm for NLP is proposed that helps to close systematic gaps in the test data, and it is recommended that after a dataset is constructed, the dataset authors manually perturb the test instances in small but meaningful ways that change the gold label, creating contrast sets. Expand
Temporal Reasoning on Implicit Events from Distant Supervision
TLDR
A neuro-symbolic temporal reasoning model, SymTime, is proposed, which exploits distant supervision signals from large-scale text and uses temporal rules to combine start times and durations to infer end times and generalizes to other temporal reasoning tasks. Expand
Temporal Common Sense Acquisition with Minimal Supervision
TLDR
This work proposes a novel sequence modeling approach that exploits explicit and implicit mentions of temporal common sense, extracted from a large corpus, to build TacoLM, a temporal commonsense language model. Expand
CogCompNLP: Your Swiss Army Knife for NLP
TLDR
This work presents the library COGCOMPNLP, which simplifies the process of design and development of NLP applications by providing modules to address different challenges, and provides a corpus-reader module that supports popular corpora in the NLP community, a module for various low-level data-structures and operations, and an extensive suite of annotation modules for a wide range of semantic and syntactic tasks. Expand
Cross-lingual Entity Alignment with Incidental Supervision
TLDR
A new model, JEANS, is proposed, which jointly represents multilingual KGs and text corpora in a shared embedding scheme, and seeks to improve entity alignment with incidental supervision signals from text. Expand
Cross-lingual Entity Alignment for Knowledge Graphs with Incidental Supervision from Free Text
TLDR
A new model, JEANS, is proposed, which jointly represents multilingual KGs and text corpora in a shared embedding scheme, and seeks to improve entity alignment with incidental supervision signals from text. Expand