This is an annual conference that deals with computational complexity broadly defined. It is usually held sometime between mid-May and mid-July and somewhere in North America or Europe. The next year's call-for-papers is usually issued in early August.
The conference seeks original research papers in all areas of computational complexity theory, studying the absolute and relative power of computational models under resource constraints. Typical models include deterministic, nondeterministic, randomized, and quantum models; uniform and nonuniform models; Boolean, algebraic, and continuous models. Typical resource constraints involve time, space, randomness, program size, input queries, communication, and entanglement; worst-case as well as average case. Other, more specific, topics include: probabilistic and interactive proof systems, inapproximability, proof complexity, descriptive complexity, and complexity-theoretic aspects of cryptography and machine learning. The conference also encourages results from other areas of computer science and mathematics motivated by computational complexity theory.
The conference is sponsored by the IEEE Computer Society Technical Committee for Mathematical Foundations of Computing in cooperation with the ACM Special Interest Group on Algorithms and Computation Theory (SIGACT) and the European Association of Theoretical Computer Science (EATCS).