Posts Tagged ‘computational linguistics’

Registration is now open for the 2012 North American Computational Linguistics Olympiad (NACLO).  This is a contest that appeals to many students who enjoy mathematical problem solving competitions.  As in past years, Dr. Vincent Ng will offer the contest at UT Dallas and will also provide a prep session before the contest.

Knowledge of specific languages is not being tested, but rather the ability of our students to detect patterns and solve problems.  Computational Linguistics and Natural Language processing are two exciting fields whose benefits we experience every day when we interact with Google search or Apple’s Siri.


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Many of us have been following the extraordinary events of last week as the IBM computer, Watson, defeated the two greatest human Jeopardy champions in three matches.  This milestone in artificial intelligence will go down in history along with Deep Blue’s defeat of Garry Kasparov in chess over a decade ago.

It took a decade to make the leap from dominating chess to a game like Jeopardy because of the challenges in understanding the ambiguity of human language.  The field focused on overcoming these challenges is called Natural Language Processing and it is an area of focus for UT Dallas and of several area companies.

Natural Language Processing in turn is closely related to Computational Linguistics.  Dr. Vincent Ng has presented to the Metroplex Math Circle before on Statistical Natural Language Processing and Computational Linguistics.  UT Dallas and Dr. Ng also host the North American Computational Linguistics Olympiad (NACLO) which is used to select the team that represents the US at the International Linguistics Olympiad.

The winners of these contests are often those who do well in math problem solving contests and attend programs like the Metroplex Math Circle.  So if you would like to be a part of the next exciting milestone in artificial intelligence, come to Metroplex Math Circle and learn the skills that will help you “serve our computer overlords.”  🙂


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Many of our circle members enjoy participating in the North American Computational Linguistics Olympiad, NACLO.   Like the USAMO, this set of contests is used to select the team that will represent the US in the International Linguistics Olympiad, ILO.  This is not a test of how many languages you know, but rather your ability to problem solve and therefore many successful math problem solvers have made it onto the ILO team.

Once again Dr. Vincent Ng will be offering the NACLO at UT Dallas.  Please take advantage of this excellent opportunity to broaden your problem solving skills and potentially earn a highly regarded credential.  Here is information from the NACLO website:

This olympiad is a contest in which high-school students solve linguistic puzzles. In solving the problems, students learn about the diversity and consistency of language, while exercising logic skills. No prior knowledge of linguistics or second languages is necessary. Professionals in linguistics, computational linguistics and language technologies use dozens of languages to create engaging problems that represent cutting edge issues in their fields. The competition has attracted top students to study and work in those same fields. It is truly an opportunity for young people to experience a taste of natural-language processing in the 21st century.

Round 1: Wednesday, February 2 (2011)
Round 2: Thursday, March 10 (2011)



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Our good friend and 2009 lecturer, Dr. Vincent Ng, will once again host the NACLO competition at UTD this year.  Computational Linguistics is a fascinating field which shares a lot in commons with mathematical problem solving.  In fact most of the students who make the national team are also highly accomplished math problem solvers.  No prior experience is necessary but the prep sessions that Dr. Ng may offer are not to be missed!  Here is his announcement to past participants:

As you may know already, we are organizing NACLO again on the UT Dallas campus this year. Just like last year, we will have an open round (on Feb 4th) and an invitational round (on March 10) [just check out www.naclo.cs.cmu.edu for details]. 
Registration is open until noon, Feb 3 (PST), but I encourage you to sign up early if you are interested. (I noticed that some of you have already signed up.) If there is sufficient interest, we will be organizing 1-2 problem sessions to solve some of the past NACLO problems together at the end of January (most likely on Jan 24 or Jan 31 or both). 
If you have any questions, feel free to let me know. I hope to see you again in this year’s NACLO! 
Vincent Ng 
Dallas Site Coordinator 
NACLO 2010 

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Dr. Ng gave a terrific talk on the field of natural language processing which combines many disciplines to address pressing problems.  He also introduced many of our students to the problems they will encounter on the North American Computational Linguistics Olympiad being held at UTD.

To help participants prepare for NACLO, Dr. Ng will host a problem session this Sunday to go over selected NACLO problems. Here are the date and location of the problem session:

Date and Time: Sunday, Jan 25, 2-5 PM
Location: Room 2.201, Engineering and Computer Science South Building, University of Texas at Dallas

You may also get updated information about the local NACLO competition, as well as additional sample NACLO problems from Dr. Ng’s website: http://www.hlt.utdallas.edu/~vince/naclo

Dr. Ng has provided his slides from the lecture.  Members of the Metroplex Math Circle e-mail group can download these files from the group site. To join the e-mail group simply click below.

Click to join MetroplexMathCircle

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Please come join us for the first Metroplex Math Circle of 2009.  On January 17 we will have Dr. Vincent Ng from UT Dallas talk to us about an exciting new field of applied mathematics as well as a new Olympiad with national and international competitions.

Statistical Natural Language Processing and the North American Computational Linguistics Olympiad

People have long believed that technology will eventually produce a machine that can speak to us. Natural language processing (NLP), one of most fascinating subfields of artificial intelligence, is devoted to enabling computers to use human languages both as input and as output. However, more than fifty years have passed since the inception of artificial intelligence, and we still have not been able to construct such a “talking machine.” In the first part of this talk, we will examine why NLP is so difficult, and take a look at how statistics have revolutionized the way computers understand human languages.

In the second part of the talk, we will give an overview of the North American Computational Linguistics Olympiad (NACLO), an international contest that aims to stimulate high-school students’ interest in natural language processing by having them solve linguistic puzzles. A local contest will be held at the University of Texas at Dallas on February 4, 2009.   Interested high-school students can now register through the NACLO website (www.naclo.cs.cmu.edu).

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Discrete mathematics and problem solving skills can lead to a very wide variety of careers.  With the upcoming NACLO competition and a lecture on Natural Language Processing, we will profile the emerging field of Computational Linguistics.  The following description is offered by Dr. Hans Uszkoreit:

Computational linguistics (CL) is a discipline between linguistics and computer science which is concerned with the computational aspects of the human language faculty. It belongs to the cognitive sciences and overlaps with the field of artificial intelligence (AI), a branch of computer science aiming at computational models of human cognition. Computational linguistics has applied and theoretical components.

Human language is a most exciting and demanding puzzle.

Theoretical CL takes up issues in theoretical linguistics and cognitive science. It deals with formal theories about the linguistic knowledge that a human needs for generating and understanding language. Today these theories have reached a degree of complexity that can only be managed by employing computers. Computational linguists develop formal models simulating aspects of the human language faculty and implement them as computer programmes. These programmes constitute the basis for the evaluation and further development of the theories.  In addition to linguistic theories, findings from cognitive psychology play a major role in simulating linguistic competence.  Within psychology, it is mainly the area of psycholinguistics that examines the cognitive processes constituting human language use. The relevance of computational modeling for psycholinguistic research is reflected in the emergence of a new subdiscipline: computational psycholinguistics.

We teach computers to communicate with people.

Applied CL focusses on the practical outcome of modelling human language use. The methods, techniques, tools and applications in this area are often subsumed under the term language engineering or (human) language technology. Although existing CL systems are far from achieving human ability, they have numerous possible applications. The goal is to create software products that have some knowledge of human language. Such products are going to change our lives. They are urgently needed for improving human-machine interaction since the main obstacle in the interaction beween human and computer is a communication problem. Today’s computers do not understand our language but computer languages are difficult to learn and do not correspond to the structure of human thought. Even if the language the machine understands and its domain of discourse are very restricted, the use of human language can increase the acceptance of software and the productivity of its users.

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