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CSLI Calendar, 28 January 1998, vol. 13:18
C S L I C A L E N D A R O F P U B L I C E V E N T S
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28 January 1998 Stanford Vol. 13, No. 18
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A weekly publication of the
Center for the Study of Language and Information (CSLI)
Stanford University, Ventura Hall, Stanford, CA 94305-4115
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ACTIVITIES DURING 28 JANUARY TO 6 FEBRUARY 1998
WEDNESDAY, 28 JANUARY
4:15pm EE380: Computer Systems Laboratory Colloquium
Gates B03 (NEC Auditorium)
SUNet Authentication
Tim Torgenrud and Scott Brylow
Stanford University
Abstract below
THURSDAY, 29 JANUARY
4:15pm Seminar on Computational Learning and Adaptation (SCLA)
Gates 100
Learning Comprehensible Predictive Models from Data
Mike Pazzani
Department of Information and Computer
Abstract below
7:30pm Linguistics Department Colloquium
Margaret Jacks Hall 460:146
Day one of a three day series
The Optimal Story about Second Position: The Morphosyntax
of Clitics and Related Phenomena
Stephen Anderson
Yale University
Abstract below
FRIDAY, 30 JANUARY
12 Noon Logic Lunch
Room 380:383N
Report on the 1998 Oberwolfach meeting on proof theory
Sergei Tupailo
Stanford
12:30pm Seminar on People, Computers, and Design
Gates B01 (HP classroom)
The Apple University Design Project 1992-1997: A Retrospective
Harry Saddler
Apple ATG (formerly)
Abstract below
3:15pm Philosophy Department Colloquium
Bldg. 90:92Q
Hesperus and Phosporous: Sense, Pretense, and Reference
Mark Crimmins
University of Michigan
3:30pm Linguistics Department Colloquium
Margaret Jacks Hall 460:146
Day two of a three day series
The Optimal Story about Second Position: The Morphosyntax
of Clitics and Related Phenomena
Stephen Anderson
Yale University
Abstract below
SATURDAY, 31 JANUARY
10:00am Linguistics Department Colloquium
Margaret Jacks Hall 460:146
Day three of a three day series
The Optimal Story about Second Position: The Morphosyntax
of Clitics and Related Phenomena
Stephen Anderson
Yale University
Abstract below
MONDAY, 2 FEBRUARY
3:30pm Computer Science and Economics Seminar
Math 380:380X
Rationality in AI
Stuart Russell
Computer Science, Berkeley
4:30pm Stanford Digital Libraries Seminar
Gates B08
Kevin McKenna
Stanford, New York Times Online
TUESDAY, 3 FEBRUARY
7:00pm Symbolic Systems Film Series
Margaret Jacks Hall, 460:146
"Triumph of the Nerds: The Rise of Accidental Empires,"
Part III
Followed at 8:00pm by a discussion led by John Perry
WEDNESDAY, 4 FEBRUARY
10:00am CSLI Seminar
Ventura 17
Discussion of "Information Flow: The Logic of Distributed
Systems" by Barwise and Seligman Discussion led by David
Israel
4:15pm EE380: Computer Systems Laboratory Colloquium
Gates B03 (NEC Auditorium)
To be announced
THURSDAY, 5 FEBRUARY
12 noon CSLI CogLunch
Cordura Hall, Room 100
Agency, Will and Practical Reason: In Search of a Middle
Way
Michael Bratman
Stanford, Philosophy
4:00pm Xerox PARC Forum
George Pake Auditorium, Xerox PARC
Gravity Probe B: Testing General Relativity
N. Jeremy Kasdin
W. W. Hansen Experimental Physics Laboratory, Stanford
University
4:15pm Seminar on Computational Learning and Adaptation (SCLA)
Gates 100
To be announced
FRIDAY, 6 FEBRUARY
12:30pm Seminar on People, Computers, and Design
Gates B01 (HP classroom)
Probabilistic Models of User Goals in Software
Eric Horvitz
Microsoft
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EE380 COMPUTER SYSTEMS COLLOQUIUM
on Wednesday, 28 January 1998, 4:15pm to 5:30pm
NEC Auditorium (B03), Gates Computer Science Building
[http://www.stanford.edu/class/ee380/]
SUNet Authentication
Tim Torgenrud and Scott Brylow
Stanford University
The arrival of the World Wide Web (WWW) brought about a higher
visibility of basic information/document exchange. At the time of its
release however, the WWW was intentionally designed to be an "open"
specification for data exchange/access. The original design
specifically states that security and access controls were left out of
the WWW.
Increased usage of the Web for a variety of tasks that involve the
sharing of data and files has raised the issue of incorporating access
controls and data security into the Web delivery process. Vendors (in
particular Netscape) have addressed a part of this by creating a
structure through the Secure Socket Layer (SSL) methodology that
provides for encryption on the wire. Vendors have not clearly provided
the means for incorporating the Web browser into the enterprise
infrastructure with authenticated "login". (Early SSL versions
authenticate the Web server to the client browser but do not do the
reverse - clearly identifying the user to the server.) This means that
the enterprise is required to prompt for a username/password pairing
in some manner, typically on an application by application basis.
Also, many of the vendor-suggested solutions make the assumptions that
environment is firewalled from the Internet and that the internal
network is trustworthy. Both assumptions fail in regard to the
Stanford network environment.
The Stanford enterprise infrastructure uses Kerberos (currently
version 4, migrating to version 5). The only browser that currently
supports Kerberos for browser authentication is NCSA Mosaic, now no
longer under development. Most vendors have indicated little intent to
fit Kerberos directly into their browser product. Most vendors have
indicated that they are simply waiting for the establishment of
individual public-key certificates as a method of long-term user
identification and authentication. The campus authentication system
will evolve to support public-key methods as a general Internet
public-key infrastructure emerges over the next few years, but this is
not a near-term solution.
Stanford's Distributed Computing Group has established a web
authentication proxy service in conjunction with a callback mechanism
to provide method(s) of bringing the campus authentication
infrastructure (Kerberos) and the campus Web environment together to
provide a secure method for document transmission that can include
user authentication for campus users.
This talk will describe the genesis of the service, the basis of the
service, issues remaining with the service, and touch on other work
ongoing in this area.
About the speakers: Tim Torgenrud has been at Stanford since the fall
of 1983. First as a student, then as a staff member in the central
computing organization(s). Currently, Tim is managing the
Infrastructure Delivery Group (IDG) within the Distributed Computing
Group (DCG) of the campus Information Technology Systems and Services
(ITSS) division. He answers postmaster@stanford.edu mail and keeps his
hand in running the campus mailing list server at lists.stanford.edu
as well...
Scott Brylow came to Stanford almost a year ago and signed on as Web
Applications Development Manager. Prior to that, Scott toured the
start-up scene for several years. Scott is currently working on such
items as the WebAuth Proxy Service, electronic commerce for campus,
and further integration of Leland Web Services into campus folks'
daily lives.
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SEMINAR ON COMPUTATIONAL LEARNING AND ADAPTATION (SCLA)
on Thursday, 29 January 1998, 4:15pm to 5:30pm
Gates 100
[http://www-csli.stanford.edu/cll/scla.html]
Learning Comprehensible Predictive Models from Data
Mike Pazzani
Department of Information and Computer Science
University of California
Irvine, CA
Knowledge discovery in databases is a field whose goal is to turn data
into information. For example, by analyzing a database of credit card
customers we can determine what types of customers are most likely to
be profitable for the company. By "mining" databases of medical
records, new cost-effective procedures for screening for diseases may
be uncovered. Several decades of research in statistics, neural
networks and artificial intelligence have identified a variety of
approaches that produce accurate descriptive or predictive models.
However, experts are unwilling to accept the results of these
techniques when they don't make sense. Here, we focus on producing
models of data that do not unnecessarily violate the existing
knowledge of a domain, and show that the results of such a system are
more understandable by human experts.
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LINGUISTICS DEPARTMENT COLLOQUIUM SERIES
Thursday, 29 January 1998, 7:30pm
Friday, 30 January 1998, 3:30pm
Saturday, 31 January 1998, 10:00am
Margaret Jacks Hall, Room 460:146
[http://www-linguistics.stanford.edu/colloq/colloq.html]
The Optimal Story About Second Position Phenomena
Stephen Anderson
Yale University
There are two sets of phenomena with respect to which the notion of
"second position" seems to turn up: (a) the location of certain
clitics; and (b) the positioning of the main verb in (certain
constructions in) certain languages. Is there any sense in which these
have anything to do with one another? The patron saint of second
position, Jakob Wackernagel, thought so, but his account has little
cogency in a modern context. Despite this, is there any other sense in
providing a unified account of the two?
I. On Clitics
The basic nature of clitics is considered, and arguments are offered
for treating "special" clitics as the morphology of phrases, rather
than as lexical items subject to special syntactic movement. A
preliminary account of clitic placement in terms of operations similar
to Word Formation Rules is offered, and problems with this are noted.
II. Clitic Positioning in OT
Treating (special) clitics as the phrasal equivalent of morphological
affixation leads us to ask about the mechanisms by which such material
is placed in the Phonological Forms of syntactic objects. An account
is offered in terms of Optimality Theory, and it is shown that this
has some advantages. An analysis of second position clitics in Tagalog
(among other languages) is presented which accounts for a number of
fundamental regularities that have had to be stipulated in previous
accounts, and which demonstrates the range of areas of grammatical
structure relevant to the OT account of a clitic system.
III. On Verb Second
Armed with an account of second position clitic phenomena, we return
to the question of whether Verb-second facts have anything in common
with these. We argue that essentially the same OT constraints that
operate in placing grammatical clitics in second position in some
languages serve to force syntactic Verb movement in others. Some
consequences for the nature of "GEN" in the OT framework are drawn.
____________
SEMINAR ON PEOPLE, COMPUTER, AND DESIGN
on Friday, 30 January 1998, 12:30-2:00pm
Gates B01 (HP Classroom)
[http://www-pcd.stanford.edu/seminar/]
(SITN Channel E2)
The Apple Design Project 1992-1997: A Retrospective
Harry Saddler
mailto:hjs@sirius.com
The Apple Design Project was begun in 1992 as a working collaboration
between Apple Computer's Advanced Technology Group and universities,
colleges, and design institutes worldwide. The goals of the project
have been to help instigate and improve curricula in user-centered
design, encourage the collaboration of engineering, design, and other
disparate academic disciplines, and expose designers and others at
Apple to the ideas and energy of the students and faculty in these
innovative programs.
After completing its sixth year, in July 1997, the project was
discontinued due to the demise of the Advanced Technology Group. But
the experience of the project lives on -- in the design programs of
over two dozen schools, in the ongoing work of over 1,200 former
students, and in the lessons carried forward by the (then-) Apple
design staff that made this collaboration happen year after year.
In this presentation and discussion, we'll sample the best and most
interesting of the student work, sharing the sense of innovation,
inspiration and incredulity it's given us, and ensuring that this
chapter in our collective history doesn't pass by unrecognized.
Biography: Harry Saddler is a user experience designer, until recently
with the User Experience Research group within Apple's Advanced
Technology Group. He has been designing software user interfaces,
interactive instructional products, multimedia, and commercial
software since 1978.
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END MATERIAL
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