AAAI-13 Preface

Welcome to the Twenty-Seventh AAAI Conference on Artificial Intelligence, AAAI-13! As can be seen in these proceedings, AI's scope and influence continue to grow. This year, we received 827 submissions across a variety of tracks, allowing us to put together a diverse and exciting technical program featuring the field's top research. The AAAI-13 program seeks to capture the diversity of this important field. The main technical program features four special tracks -- AI and the Web, Cognitive Systems, Computational Sustainability, and AI and Robotics -- which highlight specialized areas of the field.