==Machine Translation and Paraphrasing==

{| border="0" cellpadding="5" cellspacing="0" align="center"
|-
| style="border-right: 1px solid grey; background:#ffefef" | Faculty
|
{| border="0"
| [http://www.umiacs.umd.edu/~bonnie Bonnie Dorr] || interlingual and hybrid MT, semantically-informed syntactic MT
|-
| [http://umiacs.umd.edu/~mharper Mary Harper] || multilingual parsing, language modeling
|-
| [http://www.umiacs.umd.edu/~resnik/ Philip Resnik] || linguistically informed translation modeling, paraphrase, crowdsourcing and translation
|-
|}
|-
| style="border-right: 1px solid grey; background:#ffefef" | Postdocs 
|
|-
| style="border-bottom: 3px solid grey; border-right: 1px solid grey; background:#ffefef" | Graduate Students 
| style="border-bottom: 3px solid grey;" | [http://www.cs.umd.edu/~vlad/ Vlad Eidelman]
|-
| colspan="3" align="left" |

The CLIP Laboratory's work in machine translation continues the lab's long tradition of research in translation. Like most of the field, we work within the framework of statistical MT, but with an emphasis on taking appropriate advantage of knowledge driven or linguistically informed model structures, features, and priors. Some current areas of research include syntactically informed language models, linguistically informed translation model features, the use of unsupervised methods in translation modeling, exploitation of large scale "cloud computing" methods, and human-machine collaborative translation via crowdsourcing.

Paraphrase, the ability to express the same meaning in multiple ways, is an active area of research within the NLP community and here in the CLIP Laboratory. Our work in paraphrase includes the use of paraphrase in MT evaluation and parameter estimation, lattice and forest translation, and collaborative translation, as well as research on lexical and phrasal semantic similarity measures, meaning preservation in machine translation and summarization, and large-scale document similarity computation via cloud computing methods.

Representative Publications and Project Pages:
* Greene and Resnik, NAACL 2009: [http://umiacs.umd.edu/~resnik/pubs/greene_resnik_naacl2009.pdf More Than Words: Syntactic Packaging and Implicit Sentiment]
|}

==Summarization ==

==Parsing and Tagging==

==Computational Social Science==

{| border="0" cellpadding="5" cellspacing="0" align="center"
|-
| style="border-right: 1px solid grey; background:#ffefef" | Faculty
|
{| border="0"
| [http://www.umiacs.umd.edu/~jbg/ Jordan Boyd-Graber] || scientific literature analysis, persuasion
|-
| [http://www.umiacs.umd.edu/~bonnie Bonnie Dorr] || sentiment analysis, scientific literature analysis
|-
| [http://www.umiacs.umd.edu/~jimmylin/ Jimmy Lin] || social media
|-
| [http://www.umiacs.umd.edu/~oard/ Doug Oard] || technological innovation
|-
| [http://www.umiacs.umd.edu/~louiqa/ Louiqa Raschid] || diffusion, prediction, event detection
|-
| [http://www.umiacs.umd.edu/~resnik/ Philip Resnik] || sentiment, persuasion
|-
| [http://www.umiacs.umd.edu/~weinberg Amy Weinberg] || sentiment, persuasion
|}
|-
| style="border-right: 1px solid grey; background:#ffefef" | Postdocs 
|
|-
| style="border-bottom: 3px solid grey; border-right: 1px solid grey; background:#ffefef" | Graduate Students 
| style="border-bottom: 3px solid grey;" | [http://www.cs.umd.edu/~hardisty/ Eric Hardisty] [http://www.umiacs.umd.edu/~asayeed/ Asad Sayed] [http://www.cs.umd.edu/~sayyadi Hassan Sayyadi] [http://www.cs.umd.edu/~wsc Shanchan Wu]
|-
| colspan="3" align="left" |

Computational social science involves the use of computational methods and models to leverage [http://www.sciencemag.org/cgi/content/summary/323/5915/721 "the capacity to collect and analyze data at a scale that may reveal patterns of individual and group behaviors"]. Research in the CLIP Laboratory is at the forefront of this emerging area, and includes sentiment analysis (computational modeling and prediction of opinions, perspective, and other private states), automatic analysis and visualization of the scientific literature, modeling the diffusion of technological innovations, and modeling and prediction of social goals and actions such as persuasion.

Representative Publications and Project Pages:
* Greene and Resnik, NAACL 2009: [http://umiacs.umd.edu/~resnik/pubs/greene_resnik_naacl2009.pdf More Than Words: Syntactic Packaging and Implicit Sentiment]

|}

==Information Retrieval: From Tweets to Tomes ==

{| border="0" cellpadding="5" cellspacing="0" align="center"
|-
| style="border-right: 1px solid grey; background:#ffefef" | Faculty
|
{| border="0"
| [http://www.umiacs.umd.edu/~jimmylin/ Jimmy Lin] ||
|-
| [http://www.umiacs.umd.edu/~oard/ Doug Oard] ||
|}
|-
| style="border-right: 1px solid grey; background:#ffefef" | Postdocs 
|
|-
| style="border-bottom: 3px solid grey; border-right: 1px solid grey; background:#ffefef" | Graduate Students 
| style="border-bottom: 3px solid grey;" |
|-
| colspan="3" align="left" |

The goal of information retrieval is to help people find what they are looking for. Information retrieval research in the CLIP lab focuses principally on retrieval based on the language contained in text, in speech, and in document images. We work across a broad range of content types, from tweets to tomes, from talking to texting, and from Cebuano to Chinese. Three perspectives inform our work:
* we integrate a broad range of computational linguistics techniques,
* we focus on scalable techniques that can accommodate very large collections
* we sometimes draw the boundaries of our “systems” very broadly to include both the automated tools that we create and the process by which users can best employ those tools.

One example that illustrates these perspectives is our work with “cross-language information retrieval,” in which close coupling of machine translation and information retrieval techniques make it possible for people to find and use information written in languages that they can neither read nor write. Another example is our work on the design and evaluation of “question answering” systems that can automatically find and present answers to complex questions, which serves as a bridge between our work on information retrieval and summarization.

Representative Publications and Project Pages:
* Publication 1
* Publication 2

|}

==Disambiguation==

{| border="0" cellpadding="5" cellspacing="0" align="center"
|-
| style="border-right: 1px solid grey; background:#ffefef" | Faculty
|
{| border="0"
| Judith Klavans||
|-
| [http://www.umiacs.umd.edu/~resnik/ Philip Resnik] ||
|}
|-
| style="border-right: 1px solid grey; background:#ffefef" | Postdocs 
|
|-
| style="border-bottom: 3px solid grey; border-right: 1px solid grey; background:#ffefef" | Graduate Students 
| style="border-bottom: 3px solid grey;" |
|-
| colspan="3" align="left" |

Disambiguation is the process of determining the meaning or senses of a word in its context; disambiguation remains one of the most challenging NLP problems since discovering word senses involves syntactic, semantic and pragmatic contextual inferencing, along with a rich knowledge base to base selection upon. For example, the word "wing" in the theater differs from airplanes, yet another sense for furniture ("wing chair") applies to some usages. Often disambiguation can be based on windows of two and three words, but usually involves larger computation. Techniques for disambiguation range from the use of large scale thesaural resources (such as WordNet) to purely statistical methods.

Representative Publications and Project Pages:
* [http://www.umiacs.umd.edu/research/t3/index.shtml T3: Text, Tags, Trust]

|}

People

2010-08-27T17:33:11Z

Laplante: /* Faculty */

== Faculty ==
* '''[http://www.umiacs.umd.edu/~jbg/ Jordan Boyd-Graber]''': Assistant Professor, the iSchool

* '''[http://www.umiacs.umd.edu/~hal/ Hal Daumé III]''': Assistant Professor, Computer Science, Linguistics and Institute for Advanced Computer Studies

* David Doermann

* '''[http://www.umiacs.umd.edu/~bonnie/ Bonnie J. Dorr]''': Professor of Computer Science and UMIACS, Associate Dean of College of Computer, Mathematical and Physical Sciences and College of Chemical and Life Sciences

* '''[http://terpconnect.umd.edu/~mharper/ Mary Harper]''': Affiliate Research Professor, Computer Science, Electrical and Computer Engineering, and Institute for Advanced Computer Studies

* Judith Klavans

* '''[http://www.umiacs.umd.edu/~jimmylin/ Jimmy Lin]''': Associate Professor, the iSchool and Institute for Advanced Computer Studies

* '''[http://www.glue.umd.edu/~oard/ Douglas W. Oard]''': Professor, the iSchool and Institute for Advanced Computer Studies

* '''[http://www.umiacs.umd.edu/~louiqa/ Louiqa Raschid]''': Professor, Smith School of Business and Institute for Advanced Computer Studies

* '''[http://www.umiacs.umd.edu/~resnik/ Philip Resnik]''': Professor, Department of Linguistics and Institute for Advanced Computer Studies

* '''[http://www.umiacs.umd.edu/~weinberg/ Amy Weinberg]''': Associate Professor, Department of Linguistics and Institute for Advanced Computer Studies

==Post-Docs==

* '''[http://www.cs.umd.edu/~telsayed/ Tamer Elsayed]'''
* '''[http://www.umiacs.umd.edu/~hendra/ Hendra Setiawan]'''
* '''[http://www.umiacs.umd.edu/~thor/ Andreas Thor]''' (visiting)

==Graduate Students==

* '''[http://www.cs.utah.edu/~arvind/ Arvind Agarwal]''': Ph.D. student, Department of Computer Science

* '''[http://www.ling.umd.edu/~redpony/ Chris Dyer]''': Ph.D. student, Department of Linguistics

*'''[http://www.umiacs.umd.edu/~vlad/ Vladimir Eidelman]''': Ph.D. student, Department of Computer Science

* Denis Filimonov

* Sergei Golitsinski

* '''[http://www.cs.utah.edu/~amitg/ Amit Goyal]''': Ph.D. student, Department of Computer Science

*'''[http://www.cs.umd.edu/~hardisty/ Eric Hardisty]''': Ph.D. student, Department of Computer Science

* Zhongqiang Huang

* Yakov Kronrod

* '''[http://www.cs.utah.edu/~abhik/ Abhishek Kumar]''': Ph.D. student, Department of Computer Science

* '''[http://www.cs.utah.edu/~jags/ Jagadeesh Jagarlamudi]''': Ph.D. student, Department of Computer Science

* '''Jiarong Jiang''': Ph.D. student, Department of Computer Science

* Craig Murray

* Brianna Satinoff

* Asad Sayeed

* Hassan Sayyadi

* Michael Subotin

*'''[http://www.cs.umd.edu/~fture/ Ferhan Ture]''': Ph.D. student, Department of Computer Science

* Lidan Wang

*'''[http://www.cs.umd.edu/~wsc/ Shanchan Wu]''': Ph.D. student, Department of Computer Science

* Tan Xu

==Undergraduate Students==

== CLIP Alumni ==
===Researchers and postdocs===

Mari Broman-Olsen

David Chiang

Rebecca Hwa

Gina Levow

Saif Mohammad

Smaranda Muresan

Carolyn Sheffield

Maria Esther Vidal

Vladimir Zadorozhny

Daniel Zeman

===Ph.d Students===

David Alexander (BBN)

Aitziber Atutxa (Univ of the Basque Country)

Necip Fazil Ayan (SRI)

Laura Bright

Ya-Hui Chang (Associate Professor, National Taiwan Ocean University, Keelung, Taiwan)

Clara Cabezas

Waiyian Chong (Yuan)

Dina Demner-Fushman (National Library of Medicine)

Mona Diab (Columbia University)

Rebecca Green (Library of Congress)

Nizar Habash (Columbia University)

Darsana P. Josyula

Maria Katsova (Microsoft Research)

Ed Kenschaft

Okan Kolak (Google)

Grecia Lapizco

Adam Woie-Jyh Lee (NIH)

Adam Lopez (Edinburgh)

Jun Luo

Nitin Madnani (ETS)

Yuval Marton (Columbia University)

Joseph Naft

Scott Olsson

Lisa Pearl (UC Irvine)

Stacy President Hobson (IBM Research)

Alejandro Rodriguez

Grazia Russo-Lassner

Wade Shen (MIT Lincoln Labs)

Aga Skotowski (BBN)

Matthew Snover (CUNY)

Calandra Tate (Westpoint)

Scott Thomas (Navy Research Labs)

Clare Voss (Army Research Labs)

Nate Waisbrot

Jianqiang Wang (State University of New York at Buffalo)

Yao Wu (Microsoft)

David Zajic (Univeristy of Maryland - CASL)

===MS Students===
Jacob Devlin
===Undergraduate Students===

Aaron Elkiss (PhD student, University of Michigan)

Ayelet Goldin

Gregory Marton (PhD student, MIT --> Google)

Jesse Metcalf-Burton (PhD from University of Michigan)

Michael Wasser

Eric Nichols (MS student, Nara Institute of Science and Technology, Japan)

Andrew Fister

Noah Smith (PhD from JHU --> assistant professor, CMU)

Jessica Stevens (BBN)

Lisa Pearl (PhD from UMD --> assistant professor, UC Irvine)