Dear,
while a complete and exhaustive view of the BGP global routing would be a milestone for the whole networking research, all the available datasets provide just a partial view, since, as already pointed out by Sebastian Castro, the current datasets are typically obtanied through a set of vantage points with a limited visibility.
You might find a recent and well-done analysis on the incompleteness of the BGP view as well as the root causes in this paper:
Enrico Gregori, Alessandro Improta, Luciano Lenzini, Lorenzo Rossi, and Luca Sani. On the incompleteness of the AS-level graph: a novel methodology for BGP route collector placement. IMC 2012
At the same time, there several severe sources of inaccuracy to take into account when you use Traceroute to infer the AS level topology/transitions/neighborhood.
A good starting reference in this case could be the following paper:
Yu Zhang, Ricardo V. Oliveira, Hongli Zhang, Lixia Zhang.
Quantifying the Pitfalls of Traceroute in AS Connectivity Inference.
PAM 2010
Furthermore, we have recently demonstrated how Third-party addresses cause the inference of a significant percentage of false AS-level links and bogus AS-level loops when Traceroute is used to investigate the AS level connectivity. While this specific limitation has been largely ignored, you may find many more details in this paper:
Pietro Marchetta, Walter de Donato, Antonio Pescapé.
Detecting Third-party Addresses in Traceroute Traces with IP Timestamp Option.
PAM 2013.
I hope this helps.
Best regards.
Pietro Marchetta, PhD student
Dipartimento di Ingegneria Elettrica e delle Tecnologie dell'Informazione
University of Napoli ''Federico II''
Phone: +390817683821 - Fax: +390817683816