Computational Semantics

Ling 684.03, Autumn '09
TTh 1:30–3:18, Journalism 387
Instructor: Michael White
http://www.ling.ohio-state.edu/~mwhite/

Description

In this course, students will learn how to use Prolog to construct semantic representations for fragments of natural language and perform inference with these representations. At the end of the course, students should be in a good position to appreciate ongoing developments in computational semantics.

The course will be based primarily on two books by Patrick Blackburn & Johan Bos, Representation and Inference for Natural Language: A First Course in Computational Semantics and Working with Discourse Representation Theory: An Advanced Course in Computational Semantics.

Objectives

Student in the course will have an opportunity to:

Topics

Topics will include:

Time permitting, we may also look at constructing semantic dependency representations using OpenCCG grammars; constructing DRSs from the output of the Clark & Curran broad-coverage CCG parser, using the Boxer system; or recent work on inducing grammars for natural language database queries from small corpora annotated with logical forms.

Prerequisites

Ling 684.01 or equivalent. The course is open to advanced undergraduate and graduate students.

Requirements

Letter grades will be assigned using the standard OSU scale based on class participation and homework assignments.

Carmen

We'll be using the Carmen system for the schedule and for homework and reading assignments. There will also be discussion forums for posting questions and providing feedback (comments, complaints or ideas) during the course, anonymously if desired.

Readings

The first Blackburn & Bos book is out in paperback and available from various booksellers. Their second book is only available in a draft form that is somewhat out-of-date with respect to the accompanying slides. The implementation of van der Sandt's approach to anaphora resolution and presupposition projection is also described in Bos's (2003) article in Computational Linguistics.

There will also be further readings of primary sources assigned periodically, and listed below.

Semantic composition via unification

Underspecified semantic representations

Realization with OpenCCG

Large-scale semantic construction

Learning to interpret natural language database queries

Resources

Slides

Code

Prolog Help

Software Requirements

Policy on Academic Misconduct

As with any class at this university, students are required to follow the Ohio State Code of Student Conduct. In particular, note that students are not allowed to, among other things, submit plagiarized (copied but unacknowledged) work for credit. If any violation occurs, I am required to report the violation to the Council on Academic Misconduct.

Students with Disabilities

Students who need an accommodation based on the impact of a disability should contact me to arrange an appointment as soon as possible to discuss the course format, to anticipate needs, and to explore potential accommodations. I rely on the Office of Disability Services for assistance in verifying the need for accommodations and developing accommodation strategies. Students who have not previously contacted the Office for Disability Services are encouraged to do so (292-3307; http://www.ods.ohio-state.edu).

Disclaimer

This syllabus is subject to change. All important changes will be made in writing (email), with ample time for adjustment.