fixed up the conclusion a bit

dp2041 [2004-04-24 22:57:12]
fixed up the conclusion a bit
diff --git a/paper/ai2tv.tex b/paper/ai2tv.tex
index e9e26a1..6a0954e 100644
--- a/paper/ai2tv.tex
+++ b/paper/ai2tv.tex
@@ -320,7 +320,11 @@ attending the lecture and class discussion.

 Our $\mathrm{AI}^2$TV project aims to contribute to the area of
 synchronous collaboration support for distance education, specifically
-in the context of collaborative video viewing over the Internet.
+in the context of collaborative video viewing over the Internet.  Our
+approach is directed at users with dial-up level bandwidths, who still
+constitute a significant portion of the Internet user community
+\cite{DIALUP}, to allow them to collaborate with other users that
+enjoy broadband or higher bandwidth resources.

 Viewing video on the Internet usually requires relatively high
 bandwidth resources, and low-bandwidth or lossy network connections
@@ -480,8 +484,8 @@ When any participant initiates such an action, all other group members
 receive the same command, thus all the video actions are synchronized.
 Video actions are time stamped so that clients can respond to those
 commands in reference to the common time base.  The video display
-knows which frame to display by using the current (or goto) video time
-and display quality level to index into the frame index for the
+knows which frame to display by using the current video time and
+display quality level to index into the frame index for the
 representative frame.  Before trying to render the frame, it asks the
 video buffer manager if the needed frame is available.  The video
 display also includes a control hook that enables external entities,
@@ -883,12 +887,12 @@ of the other participants to accommodate the lowest bandwidth client.
 Our approach seems preferable, since it enables each client to receive
 video quality commensurate with its bandwidth resources.

-Cen {\it et al.} provide a distributed real-time MPEG video/audio
-player that uses a software feedback loop between a single server and
-a single client to adjust frame rates \cite{CEN}.  Their architecture
-incorporates feedback logic within each video player and does not
-support synchronization across a group of players, while the work
-presented here explicitly supports the synchronization of semantically
+Cen {\it et al.} provide a distributed real-time MPEG player that uses
+a software feedback loop between a single server and a single client
+to adjust frame rates \cite{CEN}.  Their architecture incorporates
+feedback logic within each video player and does not support
+synchronization across a group of players, while the work presented
+here explicitly supports the synchronization of semantically
 equivalent video frames across a small group of clients.

 An earlier implementation of $\mathrm{AI}^2$TV is described in
@@ -909,23 +913,17 @@ can run alongside the CVE in a separate window.
 We present an architecture and prototype system that allows
 geographically dispersed student groups to collaboratively view
 lecture videos in synchrony. $\mathrm{AI}^2$TV employs an
-``autonomic'' (feedback loop) controller to autonomically and
-dynamically adapt the video quality according to each client's network
-bandwidth and other local resources.  A semantic compression
-algorithm, previously developed by other researchers specifically for
-lecture videos, facilitates the synchronization of video content to
-student clients with possibly very limited resources.  We rely on that
-algorithm to guarantee that the semantic composition of the
-simultaneously viewed video frames is equivalent for all clients.  Our
-system then distributes appropriate quality levels (different
-compression levels) of the video to clients, automatically adjusted
+``autonomic'' (feedback loop) controller to dynamically adapt the
+video quality according to each client's network bandwidth.  We rely
+on a semantic compression algorithm to guarantee that the semantic
+composition of the simultaneously viewed video frames is equivalent
+for all clients, some which may have very limited resources.  Our
+system distributes appropriate quality levels (different compression
+levels) of the video to clients, which are automatically adjusted
 according to their current and fluctuating bandwidth resources.  We
 have demonstrated the advantages of this approach through experimental
-trials using bandwidth throttling.  Our approach is admittedly fixated
-on users with dial-up level bandwidths, who still constitute a
-significant portion of the Internet user community \cite{DIALUP}, and
-does not directly address either synchronization or quality of service
-for broadband users.
+trials using bandwidth throttling to show that our system can provide
+synchronization of video together with optimized video quality.

 %ACKNOWLEDGMENTS are optional
@@ -946,14 +944,7 @@ and by Microsoft Research.
 % The following two commands are all you need in the
 % initial runs of your .tex file to
 % produce the bibliography for the citations in your paper.
-\bibliographystyle{abbrv} \bibliography{ai2tv}
-% You must have a proper ".bib" file
-%  and remember to run:
-% latex bibtex latex latex
-% to resolve all references
-% ??? we'll need to do this right before submission
+% \bibliographystyle{abbrv} \bibliography{ai2tv}
 % \subsection{References}
 %% Generated by bibtex from your ~.bib file.  Run latex,
@@ -962,6 +953,278 @@ and by Microsoft Research.
 %% the .tex source file and comment out
 %% the command \texttt{{\char'134}thebibliography}.

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+Vnc (virtual network computing).
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+Webex: Web conferencing, video conferencing and online meeting services.
+\newblock \url{}.
+{Welcome To The American School}.
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+{The Application and Implications of Information Technologies in Postsecondary
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+  1996. ACM Press.
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+  with Process Technology}.
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+  Adaptation}.
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+  D.~Steere, and L.~Yu.
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+  October 1997.
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 % This next section command marks the start of
 % Appendix B, and does not continue the present hierarchy
 %% \section{More Help for the Hardy}