# Guillaume Ducoffe, PhD

## Lecturer at Faculty of Mathematics and Informatics, University of Bucharest, Romania.

### guillaume `dot' ducoffe 'at' fmi `dot' unibuc 'dot' ro

## Scientific Researcher at National Institute of Research and Development in Informatics (I.C.I.), Romania

### guillaume `dot' ducoffe `at' ici `dot' ro

# About myself

About myself

I am part of a joint team between ICI and The Research Institute of the University of Bucharest (I.C.U.B., of which I received a postdoc grant). Before that, I received my PhD thesis on December 9th, 2016 from Université Côte d'Azur (U.C.A.), France. My main research area is *algorithmic graph theory*. I am especially interested in the following topics:

**Computation in Large Graphs:**design of preprocessing methods and parameterized algorithms for fundamental problems such as Diameter, Maximum Matching etc (``*FPT in P*''). I also complement these results with conditional lower-bounds on the complexity of these problems.**Information-propagation in real-life graphs**: in-depth study of metric tree-likeness in graphs (i.e.,*Gromov Hyperbolicity*and its relatives), that are related to fundamental properties such as congestion and are useful in the design of compact geometric routing schemes. I also study the information-sharing problem from a*game-theoretic*point of view (mostly through the study of coloring games and Hedonic games).**Online targeting detection:**design of fast and theoretically certified algorithms for identifying how a given advertiser online, represented as a black-box, targets some sensitive information such as gender, race, etc. This can be reduced to an interesting variation of PAC-learning k-juntas.**Combinatorics:**some variations of graph coloring such as*proper connectivity*(with applications in password sharing), graph indices such as*Randic numbers*(with applications in chemistry), etc.

An (almost up to date) resume can be found here.

# Publications

Publications

# Teachings

Teachings

I am teaching the Master course ``**Performance evaluation of information systems**'' (University of Bucharest, 2018/2019).

- The teaching material for this class can be found here.

I am teaching the Bachelor course ``**Graph algorithms**'' (University of Bucharest, 2018/2019)

- The teaching material for this class can be found here.

Past teaching experiences are mentioned in my resume.

# Links

Links

- My former webpage;
- My LinkedIn;
- My ResearchGate profile.