Preface: Special Issue on Advanced Methodologies for Bayesian Networks

The second AMBN was held in Yokohama, Japan on November 16-18, 2015, co-sponsored by the Japanese Society Artificial Intelligence (JSAI) and the National Institute of Advanced Industrial Science and Technology (AIST).The AMBN workshop had over 100 participants and many lively and interesting discussions over the course of its duration. This special issue of New Generation Computing (NGC) has come out from these extensive activities of the researchers in BNs field.After the workshop, six excellent papers in the conference were recommended to submit to this special issue with the requirement at least 30 extension from the Post Proceeding of AMBN2015 (LNAI, Springer) version. Each paper was reviewed by one meta-reviewer and two reviewers. As a result, all the six papers were accepted for publication in this journal.