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François G. Barbançon

François Gérard Barbançon was born on April 4 1973 and grew up in Strasbourg, France, where he attended high school. In 1988, François spent the summer in Pittsburgh, PA where his sister Monique worked as an engineer.
In 1992, he entered the École Nationale Superieure des Mines de Paris, an engineering school established in 1783. After receiving the Diplôme d'Ingénieur Civil des Mines in 1995, François headed over to Austin, Texas, where enrolled at the University of Texas. He received a M.S. degree in Computer Sciences in 1998. In December 2004, he successfully defended his doctoral dissertation in Computer Sciences.
François lives in the Bay Area and is currently working on several projects in computational biology and historical linguistics.

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Work has focused on developing and maintaning a stochastic evolution simulator both for historical linguistics and for computational biology, which is to be released in Spring/Summer 2008. The simulatori takes nexus format input and generates sequences of discrete characters and allows for character transmission along contact edges. This is part of an ongoing historical linguistic simulation study.
The implemented stochastic model of evolution is summarized in: Various out of date project documentation


All this is over 2 years old.
It's too much work trying to keep this page up to date. The code resides in a CVS archive which is maintained part-time by several collaborators. Just email me if you are interested in the most recent code, javadocs and design documents!

The simulation study is implemented in Perl (notes) and encompasses several reconstruction methods:

The original java Simulator can be found here:

Phylogenetic Databases:

As large tree populations can no longer be realistically be stored and processed in a main memory fashion, it is necessary to look beyond Newick format files and explore disk bound storage and retrieval. Large tree databases can adopt an edge driven schema abandoning the Newick format. Reconstruction of trees, subtrees in Newick format and common ancestor queries can be performed efficiently by querying this schema, even for very large trees and for very large databases.


François Barbançon, Daniel P. Miranker: SPHINX: Schema Integration by Example. Journal of Intelligent Information Systems 29(2): 145-184 (2007). PDF
François Barbançon: Active Learning and Compilation of Higher Order Schema Integration Queries . PhD Dissertation, Department of Computer Sciences. The University of Texas at Austin (2005). PDF
François Barbançon and Daniel P. Miranker: Interactive Schema Integration with Sphinx. Flexible Query Answering Systems 2004: 175-190. Lecture Notes in Computer Sciences 3055, Springer 2004. PDF
Luay Nakhleh, Daniel P. Miranker, François Barbançon, William H. Piel, Michael Donoghue: Requirements of Phylogenetic Databases. International Symposium on BioInformatics and BioEngineering 2003: 141-148. PDF
François Barbançon, Daniel P. Miranker: Implementing Federated Databases Systems by Compiling SchemaSQL. International Database Engineering & Applications Symposium 2002: 192-201 PDF

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Keywords: Homepage Francois Barbancon Barbanson UT Austin PHD CS