Following is an overview of my projects, by subject area.

Phonetics and Speech Processing

I am currently interested in experimental phonetics for linguistics, the phonetics-phonology interface, speech recognition, digital signal processing of speech, speaker identification, and aeroacoustic modeling of speech.

 

Recent publications:

Fulop and Kelly Fitz (2006) “Algorithms computing the time-corrected instantaneous frequency (reassigned) spectrogram, with applications.” Journal of the Acoustical Society of America. January.

Fulop, P. Ladefoged, F. Liu, and R. Vossen (2003) "Yeyi clicks: Acoustic description and analysis," Phonetica 60(4).

Fulop and M. Dobrovolsky (1999) "An instrumental analysis of Sharchhop obstruents." Linguistics of the Tibeto-Burman Area 22.1.

 
Fulop, E. Kari, and P. Ladefoged (1998) "An acoustic study of the tongue root contrast in Degema vowels." Phonetica 55(1-2).

 

Current projects:

 

The Time-Corrected Instantaneous Frequency Spectrogram.  A new project underway. This project is chiefly about a new technique for measuring frequency that does away with frequency --- or rather, its strict mathematical definition in Fourier's terms.  The first demonstration of next-generation spectrography achieved with this technique was presented at the November 2003 meeting of the Acoustical Society of America under the title "Cheating Heisenberg: achieving certainty in wideband spectrography."

A new paper is going to appear in Phonetica.  You can see the latest manuscript form of Phonetic applications of the time-corrected instantaneous frequency spectrogram.

Please visit the web page of my collaborator on this work, Kelly Fitz of Washington State University, to find public domain computer code for various of these new signal processing functions.

The TCIF spectrogram is now being applied to an exciting new development in speaker recognition that I call voiceprinting.  A paper on this topic with Sandra Ferrari Disner is going to appear in the proceedings of the 2007 International Congress of Phonetic Sciences.

 



Mathematical linguistics and learning theory:

Recent publications:

 
"Learnability of type-logical grammars," in Electronic Notes in Theoretical Computer Science 53.  A newly corrected version is now to appear in a special issue of the journal Research on Language and Computation.

"Discovering a new class of languages," presented at Mathematics of Language 8 and printed in the proceedings.


"Mathematical results on syntactic learnability," invited presentation at the Chicago Linguistic Society 2003.  This will appear in the soon-to-be-published proceedings.

 

Fulop and E. Keenan (2002) "Compositionality: A global perspective." In Semantics, Linguistische Berichte Sonderheft 10, published by Helmut Buske Verlag, edited by Fritz Hamm and Ede Zimmerman.

Current projects:

"Substructural logic as universal grammar" a paper presented at the Spring Meeting of the Association for Symbolic Logic in April 2004.

I'm also working on new approaches to the proof theory of substructural propositional logics.  The object is efficient proof search in type logics (and related logics), so that maximally efficient parsing can be achieved. 

 
I'm also interested in Montague's intensional logic and alternatives to it.

 

I’m now working on an algorithm to use information theory to automatically develop an optimal immediate constituent analysis for any sentence.

 

I’m also attempting to characterize learnability of language classes in topological terms, in this hopes this may provide some illumination on the “geometry” of possible human languages.



 

Computational linguistics and learning:

Recent publications:

 
PhD dissertation On the Logic and Learning of Language (1999).

 A complete rewrite and expansion of my dissertation is now published by Trafford.


I have begun a collaboration with a U. of Chicago Linguistics student Sylvain Neuvel.  A paper for our project entitled "Unsupervised Learning of Morphology Without Morphemes" was presented at the Workshop on Morphological and Phonological Learning, held on July 11, 2002, in conjunction with the ACL meeting in PhiladelphiaProceedings online

"Semantic bootstrapping of type-logical grammar," Journal of Logic, Language, and Information 14(1):49-86.

Current projects:

 
My work on semantic bootstrapping of natural language grammars and type logical grammar continues, since the dissertation is only the beginning of a long road.