The Program Committee of the Twenty-sixth International Joint Conference on Artificial Intelligence (IJCAI-17) invites the submission of technical papers for the main technical track of the conference which will be held in Melbourne, Australia, from August 19th to August 25th, 2017. Submissions are invited on significant, original, and previously unpublished research on all aspects of artificial intelligence. All papers will receive mindful and rigorous reviews. For nearly a half-century, IJCAI has remained the premier conference bringing together the international AI community in communicating the advances and celebrating the achievements of artificial intelligence research and practice. It is a highly referenced conference that will provide authors with useful critical feedback. With the current explosive interest in AI and its applications, this 26th edition of the conference is guaranteed to provide an exciting forum to present and hear about cutting-edge research in AI. The Program Committee of the Twenty-sixth International Joint Conference on Artificial Intelligence (IJCAI-17) invites the submission of technical papers for the main technical track of the conference which will be held in Melbourne, Australia, from August 19th to August 25th, 2017. Submissions are invited on significant, original, and previously unpublished research on all aspects of artificial intelligence. All papers will receive mindful and rigorous reviews. For nearly a half-century, IJCAI has remained the premier conference bringing together the international AI community in communicating the advances and celebrating the achievements of artificial intelligence research and practice. It is a highly referenced conference that will provide authors with useful critical feedback. With the current explosive interest in AI and its applications, this 26th edition of the conference is guaranteed to provide an exciting forum to present and hear about cutting-edge research in AI.