| Vidéos : googletechtalks |
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| The Cognitive and Computational Neuroscience of Categorization, Novelty-Detec... |
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Google Tech Talks
November, 15 2007
ABSTRACT
Neurocomputational models provide fundamental
insights towards
understanding the human brain circuits for
learning new associations
and organizing our world into appropriate
categories. In this talk I
will review the information-processing
functions of four interacting
brain systems for learning and
categorization:
(1) the basal ganglia which incrementally
adjusts choice behaviors using environmental
feedback about the consequences of our
actions,
(2) the hippocampus which supports learning
in other brain regions through the creation
of
new stimulus representations (and, hence, new
similarity
relationships) that reflect important
statistical regularities in the
environment,
(3) the medial septum which works in a
feedback-loop with
the hippocampus, using novelty-detection to
alter the rate at which
stimulus representations are updated through
experience,
(4) the frontal lobes which provide for
selective attention and executive
control of learning and memory.
The computational models to be described have
been evaluated through a variety of empirical
methodoligies including human functional
brain imaging, studies of
patients with localized brain damage due to
injury or early-stage
neurodegenerative diseases, behavioral
genetic studies of
naturally-occuring individual variability, as
well as comparative
lesion and genetic studies with rodents. Our
applications of these
models to engineering and computer science
including automated anomaly
detection systems for mechanical fault
diagnosis on US Navy
helicopters and submarines as well more
recent contributions to the
DoD's DARPA program for Biologically Inspired
Cognitive Architectures
(BICA).
Speaker: Dr. Mark Gluck
Mark Gluck is a Professor of Neuroscience at
Rutgers University - Newark, co-director of
the Rutgers Memory Disorders Project, and
publisher of the public health newsletter,
Memory Loss and the Brain. He works at the
interface between neuroscience, psychology,
and computer science, where his research
focuses on the neural bases of learning and
memory, and the consequences of memory loss
due to aging, trauma, and disease. He is the
co-author of "Gateway to Memory: An
Introduction to Neural Network Models of the
Hippocampus and Memory " (MIT Press, 2001)
and a forthcoming undergraduate textbook,
"Learning and Memory: From Brain to
Behavior." He has edited several other books
and has published over 60 scientific journal
articles. His awards include the
Distinguished Scientific Award for Early
Career Contributions from the American
Psychological Society and the Young
Investigator Award for Cognitive and Neural
Sciences from the Office of Naval Research.
In 1996, he was awarded a NSF Presidential
Early Career Award for Scientists and
Engineers by President Bill Clinton. For more
information, see http://www.gluck.edu.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 9517
Durée : 3733 s |
| Reading Your Mind: Interfaces for Wearable Computing |
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Google Tech Talks
March, 6 2008
ABSTRACT
Today's mobile devices have inherited many of
the characteristics of desktop computing -
including the assumptions that the user's
full attention can be
focused on the interface and that the user
has the manual dexterity to spare for it.
These assumptions result in users who run
into doorways while typing an e-mail on their
mobile phone. When faced with these interface
difficulties in our experiments, users
sometimes exclaim "I want my device to read
my mind!" In this talk, we will demonstrate
several prototypes that exploit pattern
recognition and good interface design to
simulate reading the user's mind by guessing
their intent. In addition, we describe
preliminary work on an actual brain computer
interface. Informed by our own wearable
computer use since 1993, my group
investigates what mobile users claim to do
with their devices, what they actually do
with their
devices, what they want to do, and the mobile
interface challenges that interfere with the
fulfillment of users' desires. We are
currently exploring a successful modern
incarnation of a
wearable computer, the RIM Blackberry
equipped with a Bluetooth earpiece, focusing
on its mini-QWERTY
keyboard. We have developed a technique
called Automatic Whiteout++ that can
eliminate 25% of mini-QWERTY users' "fat
finger" typing errors, without
using a dictionary. We will also discuss Dual
Purpose Speech agents, which "listen in" on
the user's
conversation to help schedule appointments,
remember small "notable" pieces of
information, and communicate
with remote assistants. Finally, we will
describe our preliminary research on
BrainSign, a direct brain interface where the
user communicates through natural language.
Speaker: Thad Starner
Bio:
Thad Starner is an Associate Professor at
Georgia Institute of Technology's School of
Interactive Computing. Thad was perhaps the
first to integrate a
wearable computer into his everyday life as
an intelligent personal assistant. Starner's
work as a PhD student would help found the
field of Wearable
Computing. His group's prototypes and patents
on mobile MP3 players, mobile instant
messaging and e-mail, gesture-based
interfaces, and mobile
context-based search foreshadowed now
commonplace devices and services. Thad has
authored over 100 scientific publications
with over 100 co-authors on
mobile Human Computer Interaction (HCI),
pattern discovery, human power generation for
mobile devices, and gesture recognition, and
he is a founder and current co-chair of the
IEEE Technical Committee on Wearable
Information Systems. His work is discussed in
public forums both in the United States and
internationally, such as CNN, NPR, the BBC,
CBS's 60 Minutes, The New York Times, Nikkei
Science, The
London Independent, The Bangkok Post, and The
Wall Street Journal.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 5171
Durée : 4849 s |
| Social Recommendations |
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Google Tech Talks
April, 10 2008
ABSTRACT
Social Recommendations will change both the
lens through which we see the world as well
as the manner in which we experience it.
Everything from the media that we consume to
the events we attend will be influenced by
hyper-relevant results delivered through
hierarchical social relationships. This talk
demonstrates current efforts to integrate
social relationships into recommended user
experience including SoMR, the Social Media
Recommendation API.
Speaker: Dan Carroll
Dan is the Director of the SoMR (Social Media
Recommendation) project and the CEO of imp,
the Intelligent Media Platform. Dan has
worked in magazine and book publishing, labor
organizing, and at a public policy think
tank. He holds a patent in digital media
distribution and writes the blog
www.mediapatron.com. Dan lives in Mountain
View, California and serves on the boards of
Echolocations and InRadio.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 3509
Durée : 2458 s |
| An Overview of High Performance Computing and Challenges for the Future |
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Google Tech Talks
January, 25 2008
ABSTRACT
In this talk we examine how high performance
computing has changed
over the last 10-year and look toward the
future in terms of trends.
These changes have had and will continue to
have a major impact on our
software. A new generation of software
libraries and algorithms are
needed for the effective and reliable use of
(wide area) dynamic,
distributed and parallel environments. Some
of the software and
algorithm challenges have already been
encountered, such as management
of communication and memory hierarchies
through a combination of
compile--time and run--time techniques, but
the increased scale of
computation, depth of memory hierarchies,
range of latencies, and
increased run--time environment variability
will make these problems
much harder.
We will focus on the redesign of software to
fit multicore architectures.
Speaker: Jack Dongarra
University of Tennessee
Oak Ridge National Laboratory
University of Manchester
Jack Dongarra received a Bachelor of Science
in Mathematics from Chicago State University
in 1972 and a Master of Science in Computer
Science from the Illinois Institute of
Technology in 1973. He received his Ph.D. in
Applied Mathematics from the University of
New Mexico in 1980. He worked at the Argonne
National Laboratory until 1989, becoming a
senior scientist. He now holds an appointment
as University Distinguished Professor of
Computer Science in the Electrical
Engineering and Computer Science Department
at the University of Tennessee, has the
position of a Distinguished Research Staff
member in the Computer Science and
Mathematics Division at Oak Ridge National
Laboratory (ORNL), Turing Fellow in the
Computer Science and Mathematics Schools at
the University of Manchester, and an Adjunct
Professor in the Computer Science Department
at Rice University.
He specializes in numerical algorithms in
linear algebra, parallel computing, the use
of advanced-computer architectures,
programming methodology, and tools for
parallel computers. His research includes the
development, testing and documentation of
high quality mathematical software. He has
contributed to the design and implementation
of the following open source software
packages and systems: EISPACK, LINPACK, the
BLAS, LAPACK, ScaLAPACK, Netlib, PVM, MPI,
NetSolve, Top500, ATLAS, and PAPI. He has
published approximately 200 articles, papers,
reports and technical memoranda and he is
coauthor of several books. He was awarded the
IEEE Sid Fernbach Award in 2004 for his
contributions in the application of high
performance computers using innovative
approaches. He is a Fellow of the AAAS, ACM,
and the IEEE and a member of the National
Academy of Engineering.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 9089
Durée : 3354 s |
| BayPIGgies Meeting: Alex Martelli on Python Callbacks |
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Google Tech Talks
June 13, 2008
ABSTRACT
Local meeting of the Bay Area Python Interest
Group.
Don't call us, we'll call you: callback
patterns and idioms in Python Callbacks (the
general "Don't call us, we'll call you"
pattern) are a crucial technique for
concurrency, event-driven programming (in a
disparate variety of fields, from GUIs to
parsing), and advanced customization of
library and system behavior. This talk covers
callback patterns and idioms, their use in
the Standard Python library, and best
practices in designing and using
callback-based interfaces.
Speaker: Alex Martelli
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 508
Durée : 4029 s |
| A Possible Future of Software Development |
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Google Tech Talks
July, 25 2007
ABSTRACT
This talk begins with an overview of software
development at Adobe and a look at industry
trends towards systems built around object
oriented frameworks; why they "work", and why
they ultimately fail to deliver quality,
scalable, software. We'll look at a possible
alternative to this future, combining generic
programming with declarative programming to
build high quality, scalable systems.
Speaker: Sean Parent
Sean Parent is a principal scientist at Adobe
Systems and engineering manager of the Adobe
Software Technology Lab. One of his team's
current projects is the Adobe Source
Libraries
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 12134
Durée : 3693 s |
| Theory and Practice of Cryptography |
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Google Tech Talks
November, 28 2007
Topics include: Introduction to Modern
Cryptography, Using Cryptography in Practice
and at Google, Proofs of Security and
Security Definitions and A Special Topic in
Cryptography
This talk is one in a series hosted by Google
University: Wednesdays, 11/28/07 - 12/19/07
from 1-2pm
Speaker: Steve Weis
Steve Weis received his PhD from the
Cryptography and Information Security group
at MIT, where he was advised by Ron Rivest.
He is a member of Google's Applied Security
(AppSec) team and is the technical lead for
Google's internal cryptographic library,
KeyMaster.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 11455
Durée : 3245 s |
| Theory and Practice of Cryptography |
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Google Tech Talks
December, 19 2007
Topics include: Introduction to Modern
Cryptography, Using Cryptography in Practice
and at Google, Proofs of Security and
Security Definitions and A Special Topic in
Cryptography
This talk is one in a series hosted by Google
University: Wednesdays, 11/28/07 - 12/19/07
from 1-2pm
Speaker: Steve Weis
Steve Weis received his PhD from the
Cryptography and Information Security group
at MIT, where he was advised by Ron Rivest.
He is a member of Google's Applied Security
(AppSec) team and is the technical lead for
Google's internal cryptographic library,
KeyMaster.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 9836
Durée : 5526 s |
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