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The July 2017 Issue

Computer Communication Review (CCR) continues to evolve. As announced earlier, we now accept technical articles that are longer than six pages provided that the authors release software or datasets to help readers to repeat or reproduce the main results described in the paper. These articles are reviewed on the basis of their technical merits and the supplied artifacts are also peer-reviewed. The summary of those two reviews are attached to each accepted paper. All the technical papers that appear in this issue provide artifacts.

The CCR Online website, https:// ccronline.sigcomm.org has been enhanced with a comments section to encourage inter- actions between readers and authors. We have also launched the Community Com- ments section on CCR Online. This section contains preprints of submitted papers while they are being reviewed. Readers are en- couraged to provide constructive comments to these papers. Authors have to opt-in to have their papers listed in this section.

In 2003, David Clark and his colleagues proposed a vision of a knowledge plane for the Internet. In our first technical paper, Albert Mestres and his colleagues revisit this vision and propose Knowledge-Defined Networking. This paper argues that Software-Defined Networking (SDN) and Network Analytics (NA) are two subdomains where in- teractions between Artificial Intelligence and networking would bring many benefits. The provide both use cases and simple experi- mental results. The available software and datasets could serve as a starting point for researchers willing to explore this emerging field.

Our second technical paper tackles a different topic. Ivan Voitalov and his colleagues propose a new routing scheme in Geohyperbolic Routing and Addressing Schemes. A key concern when designing a routing scheme is the scalability of the solution and the size of the forwarding tables. The solution proposed in this paper couples network topology design with a specific addressing scheme so that forwarding tables and update messages are minimised. The proposed solution is evaluated by simulations and the authors release their software and datasets.

In our third technical paper, On the Evolution of ndnSIM: an Open-Source Simulator for NDN Experimentation, Spyridon Mastorakis et al. describe the ndnSIM network simulator. The first version of this simulator was released in 2012 and it has continuously evolved since. The paper describes the evolution of the simulator, some results and the lessons learned by the authors that would probably apply to other open source projects.

Two editorials also appear in this issue. The first one, co-authored by kc Claffy and David Clark summarises the 7th interdisciplinary Workshop on Internet Economics (WIE) that was held in December 2016. In our second editorial, Using Networks to Teach About Networks (Report on Dagstuhl Seminar #17112), Jurgen Schonwalder and his colleagues summarise a recent Dagsthul seminar that was entirely devoted to network education.

I hope that you will enjoy reading this new issue and welcome comments and suggestions on CCR Online or by email at ccr-editor at sigcomm.org.

Community feedback

Like most scientific journals, Computer Communication Review (CCR) publishes peer-reviewed papers. Reviewing papers takes time and the papers that appear in CCR have typically been submitted four months before their online publication. Once a paper is submitted, it is reviewed by a few experts in the field who assess the technical merits of the paper. If the paper supplies artefacts (software, datasets, …) additional reviewers also evaluate those artefacts. Those reviews and the associated discussions take time and often allow the authors to significantly improve the quality of their papers.

In parallel with their submission to CCR, some authors also distribute their paper to colleagues or post it on online repositories. To provide more feedback to such authors, we start a new experiment in CCR. Authors who submit papers that contain artefacts (software, datasets, …) can now opt for community feedback. In this case, the paper is quickly checked by the editor and if suitable it is posted on ccronline.sigcomm.org during the review process together with links to the additional material. We start this experiment with the following paper that is currently under review :

We hope that this new service will be useful for the community and encourage you to provide feedback to the authors through website comments. Feel free to also contact the editor by email if you have any suggestion or comment on this new service.