http:^^www.cs.columbia.edu^~sal^

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My current interest lies in the future of large scale network-based
information systems, especially <!WA50><a href="http://www.cs.columbia.edu/~sal/fstc-ec.html">Fraud and
Intrusion Detection</a>.
We are studying methods to apply learning agents, and Meta-learning agents
in WAN financial information systems to learn how to detect fraudlent
transactions. This work is directly relevant to <b>Information Warfare</b>
problems that will undoubtedly occur in the future. (These problems
probably occur today but no one has yet learned how to detect it globally! 
Stay tuned!)
<p>  
This research is being conducted in collaboration with our friends
at the <!WA51><a href="http://www.fstc.org">Financial Services Technology Consortium.</a>,
<p>

<dt><!WA52><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><b>Integrating Multiple Models: AAAI96 Workshop</b>
<dd>
Many researchers are working on similar techniques for integrating 
multiple learned models.  So Phil Chan, David Wolpert and myself
are organizing a Workshop at AAAI-96 called
<!WA53><a href="http://www.cs.fit.edu/~imlm/">Integrating Multiple Models
for Improving and Scaling Machine Learning.</a>
<b>See the workshop agenda and call for papers</b>. Please participate
directly if you are interested in pursuing these ideas or if you have
new results to share with the community.
<p>

<dt><!WA54><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><b>Speeding Up Monte Carlo 
Simulations</b>
<dd>
I've also studied parallelization strategies for Monte Carlo simulations.
Check out <b>Dynamic Neighborhood Bounding</b>, a simple heuristic strategy
to save on expensive function computations that is also amenable to
fast parallel execution. (Follow the link to "papers".)
<p>

<dt><!WA55><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><b>Collaborators</b>

<dl>
<dt><!WA56><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/greendot.gif"><!WA57><a href="http://www.fstc.org">
<b>Financial Services Technology Consortium (FSTC)</b></a>
<dd>
I've been working with the 
Financial Services Technology Consortium 
(FSTC) having played some small role in its early formation. 
<strong>The FSTC's "Fraud Project"</strong> is the focus of our joint effort. 
See the description on 
<!WA58><a href="http://www.cs.columbia.edu/~sal/BAA9603/pub-proposal/pub-proposal.html">
Fraud and Intrusion Detection in Financial Information Systems using 
Meta-learning Agents</a> 
for details about our approach.
<dt><!WA59><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/greendot.gif"><!WA60><a href="http://www.citicorp.com">
<b>Citicorp</b></a>
<dd>
My relationship with Citicorp
was established through my consultancies and research relationships
with the Citicorp Technology Office. Working with companies like
Citicorp is  a wonderful opportunity to learn about
real-world problems and datasets for use in establishing benchmarks and
controlled studies of fundamental technologies. 
<p>
My collaboration with Citicorp and other organizations 
lead to the development of a number of 
fundamental technologies that were demonstrated in "real-life" financial 
applications.  Some of these are described  in this web page. Seek them
out.

<dt><!WA61><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/greendot.gif"><!WA62><a href="http://www.smarts.com">
<b>System Management ARTS</b></a>
<dd>
SMARTS is a spinoff from the research lab of 
<!WA63><a href="http://www.cs.columbia.edu/~yemini">Professor Yechiam Yemini</a>.
Their SOS agent infrastructure is being used in our work on meta-learning
agents for fraud and intrusion detection.

</dl>
<p>

<dt><!WA64><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><!WA65><a href="http://www.cs.columbia.edu/~sal/recent-papers.html"><b>SOME RECENT PUBLICATIONS<b></a>
<dd>Better have a postscript viewer configured before downloading!
<p>

<dt><!WA66><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/reddot.gif"><b>Sponsors:
<dd>
 <dl>
  <dt><!WA67><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/browndot.gif">
      <b><!WA68><a href="http://www.arpa.mil">(D)ARPA (BAA99603 Survivability of Information Systems Program: Intrusion Detection)</a></b>
  <dt><!WA69><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/browndot.gif"><b>
<!WA70><a href="http://www.nsf.gov/cise/iris/DBEShome.html/">
NSF CISE Database and Expert System Program</a></b>
  <dt><!WA71><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/browndot.gif"><b>
<!WA72><a href="http://www.nsf.gov/cise/iris/KMCShome.html/">
NSF CISE Knowledge Models and Cognitive Systems Program</a></b>
  <dt><!WA73><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/browndot.gif"><b><!WA74><a href="http://www.poly.edu/catt.html">New York State Science and Technology Foundation CAT Program</a></b>
  <dt><!WA75><IMG ALT="x" SRC="http://www.cs.columbia.edu/~sal/images/browndot.gif"><b><!WA76><a href="http://www.citicorp.com">Citicorp</a></b>
 </dl>

</dl>

<hr>
<h2>Contact Points and my PhD students</h2>

I'm always looking for good people to work with me.  How would you like 
to help me build an agent-based learning
system  operating over the Internet for Detecting Fraud in Electronic 
Commerce? Send a note of interest and we might talk about it...
<p>
Send email to <b><!WA77><a href="mailto:[e-mail]">[e-mail]</a></b>.
<p>
<b>You can find out much more about these topics by contacting me
directly or <!WA78><a href="http://www.cs.columbia.edu/~sal/phds.html">MY PhD STUDENTS</a>, former and current.
(Maybe that includes you sometime in the future?)

<hr>
<h2>The Answer</h2>
<p>
<!WA79><a href="http://www.cs.columbia.edu/~sal/answer.html">Did you guess what the image means?</a>   

<hr>
<h2>My Greatest Achievement in Life</h2>
<p>
One last thought (for now). Of all my accomplishments, 
absolutely none come close to <!WA80><a href="http://www.cs.columbia.edu/~sal/pictures/kids.small.gif">
my true achievement</a> in life.

<hr>
<h2>Fun at my home town</h2>
And I especially enjoy doing all sorts of things for my community
mostly through my kids' schools. Some of you may even have heard 
of a special event in Ridgewood, New Jersey where we live. Its called<br>
<p>
<center>
<!WA81><a href="http://www.cs.columbia.edu/~sal/DADSNIGHT/dn.html">DADS NIGHT.</a>
</center>
<p>
Ridgewood has all sorts of interesting events going on. Another one that
I am happy to be involved with is <br>
<p>
<center>
<!WA82><a href="http://www.nic.com/~science">SUPER SCIENCE SATURDAY.</a> 
</center>
<p>
Visit the homepages of both for a peek at what's up in Ridgewood!
<hr>

And if you haven't figured out what I might look like 
<!WA83><a href="http://www.cs.columbia.edu/~sal/kid2.html">well check this out too.</a>

<hr>

<h2>Links</h2>
<dl>
<dt><dd><!WA84><IMG ALT="o" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><!WA85><a href="http://www.cs.columbia.edu/pdis_lab/">Parallel and Distributed Intelligent Systems Laboratory</a>      
<dt><dd><!WA86><IMG ALT="o" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><!WA87><a href="http://www.cs.columbia.edu/">Department of Computer Science</a>

<dt><dd><!WA88><IMG ALT="o" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><!WA89><a href="http://www.columbia.edu/">Columbia University</a>

<dt><dd><!WA90><IMG ALT="o" SRC="http://www.cs.columbia.edu/~sal/images/purpledot.gif"><!WA91><a href="http://www.poly.edu/catt.html">Polytechnic University Center for Advanced Technology</a>
</dl>



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