These lectures develop approximation algorithms for computing a tree decomposition and discuss applications.
Lectures
FPT Appproximation Algorithm for Computing Tree Decomposition - Part 01
FPT Appproximation Algorithm for Computing Tree Decomposition - Part 02
FPT Appproximation Algorithm for Computing Tree Decomposition and Applications - Part 01
FPT Appproximation Algorithm for Computing Tree Decomposition and Applications - Part 02