UCLA Mathematical Linguistics Circle
Sponsored by UCLA Linguistics
If you would like to get on the Math Linguistics/Natural Language Processing email list or present a talk, please contact Ed Stabler at stabler@ucla.edu.

Thurs
May 1
Marcus Kracht
UCLA
"Working with Referent Systems" "
For some time I have been developing a theory that allows to do semantic analysis by means of Referent Systems (due to Kees Vermeulen). The main idea is that the type hierarchy is flattened, and morphological properties are used side-by-side with syntactic properties. In principle this should do away with most of the type fiddling known from categorial grammar. The emphasis has since shifted (in my case) from developing the theory to developing a program that implements it. I shall outline the theory and then give a demo of the program.
5:00PM
2122 Campbell Hall

----------------------------------------


----------------------------------------


Thurs
Apr 24
Timothy Tangherlini
UCLA Scandinavian Section
"Toward a Morphological Analyzer for Old Icelandic: Challenges and Possible Solutions"
We propose to develop an Old Icelandic morphological analyzer using the functional programming language Haskell. Instead of trying to gain incremental increases in the accuracy of our existing Old Icelandic morphological analyzer by debugging and refining increasingly complex Perl code, we propose to develop an analyzer that returns 100% accuracy for known lemmata, that incorporates a simple mechanism for adding lemmata, and that allows for quick correction of improperly or over-generated forms. Given its architecture and implementation, the morphological analyzer we propose to develop will be easy to debug, will allow for straight forward additions to the underlying lexical set, and will be written in a manner that can be easily grasped by non-computer programmers. A morphological analyzer developed according to these parameters also allows for a high degree of extensibility, making it easier for non-programmers to develop accurate morphological analysis tools for other languages. Some of the main challenges in developing this analyzer are related to the morphonological complexity of Old Icelandic. These challenges include umlaut, breaking and syncope. Other, second order challenges include grammatical disambiguation, as well as accounting for by-forms and orthographic change.
5:00PM
2122 Campbell Hall
Thurs
April 17
Hans-Martin Gärtner
Zentrum für Allgemeine Sprachwissenschaft, Typologie und Universalienforschung (ZAS), Berlin
"Low Risk Quantifiers" "
Low risk quantifiers (LRQs) are quantifiers for which an opponent has no superior falsification strategy in a GTS-style verification game. LRQs are shown to closely approximate the class of DP-quantifiers allowed in a presentational construction of German involving prosodically and information-structurally integrated V2 clauses. The notion of "risk" will be linked to a speaker strategy in competitive argumentation.
5:00PM
2122 Campbell Hall
Thurs
Apr 3
Greg Kobele
Humboldt University
" Ellipsis in minimalist grammars"
Abstract: I show how to extend minimalist grammars so as to be able to assign meanings to elliptical sentences. Adding an operation of deletion under identity poses two problems. First, what is to count as identity (syntactic, semantic, etc)? Second, once a notion of identity is agreed upon, how does this new mechanism affect the sound- meaning pairs licensed by the grammar? This latter question is tricky, as deletion under identity makes the structure of derivations much more complicated. Luckily however, measurably so. I show that minimalist derivations with deletion under identity can be described using first order logic extended with a binary deterministic transitive closure operator. This is an immediate consequence of various other facts, most interesting among which is that minimalist derivations without identity can be described using FOL with a *unary* deterministic transitive closure operator (improving on previous characterizations in terms of monadic second order logic). The upshot of all this is that we obtain a logical characterization of the complexity of the sound meaning correspondence minimalist grammars with deletion under identity can define, which is independent of the deletion analysis of ellipsis (i.e. it is true of the `ellipsis as a pro-form' approach, too). This is cool, because we can use continuations, or whatever else ensures ship buoyancy, to deal with ellipsis, secure in the knowledge that we know exactly what we are claiming about natural language.
5:00PM
2122 Campbell Hall