Dong Xin
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1. Web Application

Problem: Structual Search

If we submit a long sentence or a paragraph to google, most of
time, google is not able to handle it. Structual search is
different from traiditional key words search in that it also 
take the structural information in the query sentences.

The users could be any general users.
The data involved in the challenge is the text webpages over
the internet.
The key functions in the problem are the document indexing and
document searching.

2. Email application

Most email servers will be happy to have a function to
determine the email spans. This is related to how to find
a portion of data which appears in lots of emails.

The users could be both the server administrator, it also
benifits every client users.
The data invovled in the problem is the email context, which 
could be either assiic or binary sequences.
THe key functions in the problem are the similarity search
among large data sets. This similarity search should be able
to handle approximate matching, self join similarity matching.


3. Literature application

I am not able to give a challenge problem here. Perhaps a
similar challenge problem in web applications can be applied here.