TR available: learning phrase structure

[George Berg]

  The following paper is available:

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		 Learning Recursive Phrase structure:
	   Combining the Strengths of PDP and X-Bar Syntax

			     George Berg
		    Department of Computer Science
	   Department of Linguistics and Cognitive Science
		State University of New York at Albany



			       ABSTRACT
				   
     In this paper we show how  a connectionist model,  the XERIC Parser,
   can be trained to build a representation of the syntactic structure of
   sentences.  One of  the  strengths   of this model   is that it avoids
   placing a priori restrictions on the length of sentences  or the depth
   of  phrase structure nesting.   The   XERIC architecture  uses   X-Bar
   grammar, an  "unrolled" virtual architecture  reminiscent of Rumelhart
   and McClelland's back-propagation through time, recurrent networks and
   reduced descriptions   similar to  Pollack's RAAM.  Representations of
   words are presented one at a time, and the parser incrementally builds
   a representation of   the sentence structure. Along  the   way it does
   lexical  and number/person disambiguation. The   limits on the current
   model's performance are  consistent  with the  difficulty  of encoding
   information  (especially  lexical  information) as   the   length  and
   complexity of the sentence increases.


  This paper is to be presented at the IJCAI-91 Workshop on Natural
Language Learning, and is also available as SUNY Albany Computer
Science Department technical report TR 91-5.

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  This paper is available three ways. Please DO NOT write me for a
copy (among other reasons, because I'll be out of town most of the
rest of the Summer). I will, however, be happy to answer questions and
otherwise discuss the paper.

----

First Way: anonymous ftp via the neuroprose archive:

  The file is available via anonymous ftp from
cheops.cis.ohio-state.edu as the file berg.phrase_structure.ps.Z in
the pub/neuroprose directory. It is a compressed postscript file.
Below is the log of a typical ftp session to retrieve the file:

yourprompt> ftp cheops.cis.ohio-state.edu
Connected to cheops.cis.ohio-state.edu.
220 cheops.cis.ohio-state.edu FTP server (Version 5.49 Tue May 9 14:01:04 EDT 19
89) ready.
Name (cheops.cis.ohio-state.edu:you): anonymous
331 Guest login ok, send ident as password.
Password:
230 Guest login ok, access restrictions apply.
ftp> cd pub/neuroprose
250 CWD command successful.
ftp> binary
200 Type set to I.
ftp> get berg.phrase_structure.ps.Z
200 PORT command successful.
150 Opening BINARY mode data connection for berg.phrase_structure.ps.Z (107077 b
ytes).
226 Transfer complete.
local: berg.phrase_structure.ps.Z remote: berg.phrase_structure.ps.Z
107077 bytes received in 7.3 seconds (14 Kbytes/s)
ftp> quit
221 Goodbye.
yourprompt> 

  Then uncompress the file and print it in your local fashion for
printing postscript. 

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Second Way: anonymous ftp via SUNY Albany

  The file is available via anonymous ftp from ftp.cs.albany.edu
(128.204.2.32) as the file tr91-5.ps.Z in the pub directory. It is a
compressed postscript file. Below is the log of a typical ftp session
to retrieve the file:

yourprompt> ftp ftp.cs.albany.edu
Connected to karp.albany.edu.
220 karp.albany.edu FTP server (SunOS 4.1) ready.
Name (ftp.cs.albany.edu:you): anonymous
331 Guest login ok, send ident as password.
Password:
230 Guest login ok, access restrictions apply.
ftp> cd pub
250 CWD command successful.
ftp> binary
200 Type set to I.
ftp> get tr91-5.ps.Z
200 PORT command successful.
150 Binary data connection for tr91-5.ps.Z (128.204.2.36,2116) (107077 bytes).
226 Binary Transfer complete.
local: tr91-5.ps.Z remote: tr91-5.ps.Z
107077 bytes received in 1 seconds (1e+02 Kbytes/s)
ftp> quit
221 Goodbye.
yourprompt>

  Then uncompress the file and print it in your local fashion for
printing postscript. 

---

Third Way: SUNY Albany Computer Science Department Technical Reports
           Secretary.

  A copy of the paper may be requested by writing:

	Technical Reports Secretary
	Computer Science Department, LI-67A
	State University of New York at Albany
	Albany, New York 12222
	USA

and requesting a copy of Technical Report TR 91-5 ("Learning Recursive
Phrase structure: Combining the Strengths of PDP and X-Bar Syntax" by
George Berg). As I do not wish to make an enemy of the technical
reports secretary, please only request a copy if you are unable to get
one by ftp.

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| George Berg        | Computer Science Dept. |  If you want wit in 15 words  |
| berg at cs.albany.edu | SUNY at Albany, LI 67A | or less, go check Bartlett's  |
| (518) 442 4267     | Albany, NY 12222 USA   | quotations  --  I'm busy.     |
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