Principles of Knowledge Representation and Reasoning, Incorporated (KR, Inc.) is a not for profit Scientific Foundation incorporated in the state of Massachusetts of the United States of America, concerned with fostering research and communication on knowledge representation and reasoning.

Its primary activities include organizing a series of prestigious conferences, the conferences on Principles of Knowledge Representation and Reasoning, cooperating with workshops on related topics, maintaining informational materials on the World Wide Web, and maintaining KR-related mailing lists.

KR2018 in Arizona was a tremendous success. Many thanks to the organisers and all those who attended and supported it.

KR Inc. is busy organizing KR2020, the 17th International Conference on Principles of Knowledge Representation and Reasoning in Patras, Greece.

The Conference Chair of KR2020 is Michael Thielscher; the Program Chairs are Diego Calvanese and Esra Erdem; the Local Arrangements Chair is Pavlos Peppas.

We look forward to welcoming you to Patras Greece in 2020