21st International Conference, ILP 2011. Windsor Great Park, UK, July 31 – August 3, 2011. Revised Selected Papers. — Springer-Verlag Berlin Heidelberg, 2012. — 416 p. — ISBN 978-3-642-31950-1, e-ISBN 978-3-642-31951-8
The ILP 2011 conference held in Cumberland Lodge, Great Windsor Park, marked 20 years since the first ILP workshop in 1991. During this period the conference has developed into the premier forum for work on logic-based machine learning. The format of the proceedings for the 21st International Conference of Inductive Logic Programming (ILP 2011) follows a similar format to that of previous conferences, and is particularly close to that used in ILP 2006. Submissions were requested in two phases. The first phase involved short papers (6 pages) which were then presented at the conference and posted on the conference website prior to the conference itself. In the second phase, reviewers selected papers for long paper submission (15 pages maximum). These were assessed by the same reviewers, who then decided which papers to include in the journal special issue and proceedings.
In the first phase there were 66 papers. Each paper was reviewed by three reviewers. Out of these, 31 were invited as long papers. Out of the long paper submissions five were selected for the Machine Learning Journal special issue and 24 were accepted for the proceedings. In addition, one paper was nominated by PC referees for the applications prize (the “Michie ILP Application Prize” sponsored by Syngenta Ltd.) and one for the theory prize (the “Turing ILP Theory Prize” sponsored by the Machine Learning Journal ). The papers in the proceedings represent the diversity and vitality in present ILP research including ILP theory, implementations, probabilistic ILP, biological applications, sub-group discovery, grammatical inference, relational kernels, learning of Petri nets, spatial learning, graph-based learning, and learning of action models.