P. Clark

Publications
Influence

UnifiedQA: Crossing Format Boundaries With a Single QA System

Daniel Khashabi, Sewon Min, +4 authors Hannaneh Hajishirzi
Computer Science
EMNLP
2 May 2020

We use the latest advances in language modeling to build a single pre-trained QA model, UnifiedQA, that performs surprisingly well across 17 QA datasets spanning 4 diverse formats. Expand

A Lightweight and High Performance Monolingual Word Aligner

Xuchen Yao, Benjamin Van Durme, Chris Callison-Burch, P. Clark
Computer Science
ACL
1 August 2013

We introduce a discriminatively trained monolingual word aligner that is able to align tens to hundreds of sentence pairs per second, and needs access only to a POS tagger and WordNet. Expand

Semi-Markov Phrase-Based Monolingual Alignment

Xuchen Yao, Benjamin Van Durme, Chris Callison-Burch, P. Clark
Computer Science
EMNLP
1 October 2013

We introduce a novel discriminative model for phrase-based monolingual alignment using a semi-Markov CRF. Expand

Higher-order Lexical Semantic Models for Non-factoid Answer Reranking

Daniel Fried, P. Jansen, Gustave Hahn-Powell, M. Surdeanu, P. Clark
Computer Science
Transactions of the Association for Computational…
14 April 2015

We introduce a higher-order formalism that allows all these lexical semantic models to chain direct evidence to construct indirect associations between question and answer texts, by casting the task as the traversal of graphs that encode direct term associations. Expand

Knowledge Patterns

P. Clark, J. A. Thompson, B. Porter
Computer Science
Handbook on Ontologies
11 April 2000

We have developed a knowledge engineering technique based on the explicit representation of these knowledge patterns, i.e., general templates denoting recurring theory schemata, and their transformation (through symbol renaming) to create specific theories. Expand

Network QoS for Grid Systems

S. Bhatti, S. Sørensen, P. Clark, J. Crowcroft
Computer Science
Int. J. High Perform. Comput. Appl.
1 August 2003

A work-in-progress that uses a peer-to-peer approach to micro-manage network capacity allocations at the edge of the network, at end-sites, in a multi-domain scenario. Expand

Transformers as Soft Reasoners over Language

P. Clark, Oyvind Tafjord, Kyle Richardson
Computer Science
ArXiv
14 February 2020

This paper investigates a modern approach to this problem where the facts and rules are provided as natural language sentences, thus bypassing a formal representation. Expand

Backland activities in medieval Perth: excavations at Meal Vennel and Scott Street

A. Cox, L. Blanchard, +4 authors P. Clark
Art
1996

Two excavations within the medieval burgh provided the opportunity to investigate an early industrial zone on the western side of Meal Vennel and a relatively rich undeveloped area in the backlands… Expand

Fault transmissibility in clastic-argillaceous sequences controlled by clay smear evolution

S. Giger, M. B. Clennell, N. Çiftçi, Craig Harbers, P. Clark, Mark Ricchetti
Geology
1 May 2013

The continuity of clay smears evolving in sealed direct shear experiments of initially intact sandstone-mudrock sequences was quantified to large displacements up to more than ten times the thickness… Expand

How Do Atmospheric Rivers Form

H. Dacre, P. Clark, O. Mart́ınez-Alvarado, M. Stringer, D. Lavers
Environmental Science
16 September 2015

AbstractThe term “atmospheric river” is used to describe corridors of strong water vapor transport in the troposphere. Filaments of enhanced water vapor, commonly observed in satellite imagery… Expand

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