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Date: Thu, 21 Nov 1996 21:53:39 GMTServer: NCSA/1.5Content-type: text/html<html><head><TITLE>BU - CSD - Grad Student: David G. Durand</TITLE></head><body bgcolor="#B0A860" text="#000000" link="#FFFFFF" vlink="#504040"><HR><H1><!WA0><IMG SRC="http://www.cs.bu.edu/students/grads/dgd/dgd.gif" align=left valign=top>David G. Durand </H1><H3><pre>Computer Science DepartmentBoston University111 Cummington Street, MCS-211Tel: (401) 781-5137<EM>dgd@cs.bu.edu </EM></pre></H3><br clear=all><br><hr><p>I'm a graduate student in Computer Science at Boston University,working on collaborative editing. I'm more interested in text andhypertext than multimedia and hypermedia, and I'm most interested in howpeople can collaborate by using and editing shared hypertexts. <p>On my practicalside I'm interested in multi-user collaboration on shared documents,on real networks (that is to say unreliable, regularly-disconnectednetworks). The experience of writing a book with a co-author has addeda first-hand depth to what were originally theoretically-motivatedbeliefs. <p>On my radical side, inspired to a great degree by TedNelson, I'm interested in shared writing spaces where free writing andre-writing of evrything can take place, with a careful trail of whathas happened as insurance against misrepresentation.<p>Fortunately for both sides of my professional personality, the samekind of technology is required to solve both problems. Real-timecollaboration is something that I think is very important, but it'snot one of my current areas of activity.<p>I'm also an SGML (or at least content-markup) bigot.<p>This page contains descriptions of my work on versioning andmarkup. You'll have to find some other way to scope out my hobbies andfavorite links.<h2>David's research</h2><h3>Versioning</h3> <p>I'm working on a model I call Palimpsest after the overwrittenscroll from which scholars extract previous versions oftexts. Palimpsest is a general data model that provides veryfine-level control of version management states and policies. It makesan explicit architectural assumption that a version management systemis controlling data, and not processes for accessing data. Thisapproach allows finer control at the cost of greater applicationoverhead.<p> The Palimpsest paper was presented at the Workshop onCollaborative Editing Systems at CSCW '94. It is the most up-to-datedocumentation of my most general work on version control. I've done apartial HTML conversion of <!WA1><a href="http://www.cs.bu.edu/students/grads/dgd/thesis/original_paper.html">thispaper.</a> This converted version is complete except that it is stillmissing the first 2 illustrations. If you'd prefer a fully formattedversion, download the file at the end of this link to get compressed postscriptof the <!WA2><a href="http://www.cs.bu.edu/students/grads/dgd/palimpsest.ps.Z">Palimpsest paper.</a> </p> <p>Fabio Vitali and I have written <!WA3><a href="http://www.cs.bu.edu/students/grads/dgd/version.html">a paper</a>proposing a system of versionmanagement for the World Wide Web. This is designed as a relatively easyto implement method to bring "artifact-based" collaboration to the WWW bysupporting independent editing (via version control) over the Web. Therecent announcement of widespread availability of Java-based Web browsersmakes implementation of cross-platform client-side editors seem much morefeasible. This paper will was presented at the Fourth World Wide WebConference in December 1995. </P><p>I've recently written a <!WA4><a href="http://www.cs.bu.edu/students/grads/dgd/HTML_versions.html">little screed</a> on versioning and the WWW forthe <!WA5><a href="http://www.ics.uci.edu/~ejw/versioning">Versioning Workinggroup</a> run by <!WA6><a href="http://www.ics.uci.edu/~ejw/">Jim Whitehead</a> atthe University of California.<p>With Fabio Vitali and the others in the group, I've been working on a draftof <!WA7><a href="http://www.cs.bu.edu/students/grads/dgd/draft-durand-versreq-00.html">functional requirements for versioning on the web.</a><h3>Markup</h3> <p>Content markup is technique for describing textsfor future processing. The current baseline for all content markupsystems is SGML (ISO standard 8879). However there are many questionsabout markup that are unanswered (and perhaps unanswerable), forinstance, for all the talk of SGML being semantically based, there isno good description of what it means to mark up a document. There arealso<!WA8><ahref="http://www.stg.brown.edu/resources/stg/monographs/ohco.html">interestingproblems</a> with handling non-hierarchical markup in SGML, as well asgood arguments that non-hierarchical structures are important in texts<p>I've been following up the work on non-hierarchical markup with ElliMylonas and Steven DeRose in a <!WA9><a href="http://www.cs.bu.edu/students/grads/dgd/markup_abridged.html">paper abstract</a> accepted at the 1996 <!WA10><ahref="http://www.ach.org/">ACH/ALLC</a> <!WA11><ahref="http://www.hd.uib.no/allc-ach96.html">annual conference</A> inBergen. This abstract describes some advanced directions fordescribing the structure of the kinds of complex texts and textualtheories that come up in humanistic research.<p>The Text Encoding Initiative has a variety of lessons to offer to theHTML effort. In a paper to appear at the Fourth WWW conference, fourfellow TEI alumni and I offer some<!WA12><a href="http://www.qucis.queensu.ca/~barnard/wwwpaper.html">Lessons forthe World Wide Web from the Text Encoding Initiative.</a><h2>Versioning Working Group</h2> <p>The Versioning Working Group is a group of (currently four) peoplewho are all concerned with the problems of version management inhypertext systems. Currently, we are working on a paper (a sort ofunion framework of the strategies for version and change management ofwhich we are aware). We held a <!WA13><a href="http://www.cs.bu.edu/students/grads/dgd/workshop/Home.html">workshop</a> at ECHT '94, which we hope willhelp to expand and solidify the "hypertext version managementcommunity."<p>Recently we held another workshop at ECSCW '95, whose proceeedingsare not yet available.<p>Another interesting workshop was the Workshop on CollaborativeEditing Systems held as CSCW '94. <!-- <p><!WA14><a href="http://www.cs.bu.edu/students/grads/dgd/VWG.html">More on the VWG</a> --><h3>HyTime</h3> <p>Steven DeRose and I have written a book on the HyTime standard, which describesan SGML-based hypermedia interchange language. <p><!WA15><a href="http://www.cs.bu.edu/students/grads/dgd/hytime.html">More on <i>Making Hypermedia Work: A User'sGuide to HyTime.</i></a><h3>HyTime ongoing review</h3><p>Steven DeRose and I have also prepared some input to the ongoingHyTime review process -- A technical Corrigendum has been accepted atballot, but The final wording of the upcoming changes has not yet beendetermined. <p>Steve and I have had a number of discussions ofchanges that might be made, and I've prepared a <!WA16><ahref=http://www.cs.bu.edu/students/grads/dgd/HTTC.html>document discussing our proposed changes.</a> Mostchanges proposed in this document have been accepted in principle(i.e. some things have been changed, but in a different way from whatwe suggested). A few were rejected (Our annex C comments, mostly), andsome others deferred for more careful consideration.<p>This is my daughter Despina.<br><!WA17><img src=http://www.cs.bu.edu/students/grads/dgd/despina1.GIF valign=top><!WA18><img src=http://www.cs.bu.edu/students/grads/dgd/despina2.GIF valign=top><br clear=all> <HR><P>Last updated <EM>6/5/96</EM> <HR>⌨️ 快捷键说明
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