Research theme for competitive and other funds (3):
2002 - Study on Universal Data Compression
Study on the Shannon Theory
Study on Visual Cryptology
Papers (86):
Nagaya, Akihito, Yoneyama, Tomoki, Koga, Hiroki. An Explicit Construction of a Coded Caching Scheme with Heterogeneous Cache Sizes and Its Extension via Optimization. IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES. 2026. E109A. 3. 463-472
KOGA, Hiroki. An Explicit Construction of a Coded Caching Scheme with Heterogeneous Cache Sizes and Its Extension via Optimization. IEICE Trans. on Fundamentals. 2026. E109-A. 3. 463-472
KOGA, Hiroki. Constructions of a Visual Cryptography Scheme Using an Affine Resolvable BIBD. Proceedings of 2024 International Symposium on Information Theory and Its Applications. 2024. 188-193
KOGA, Hiroki. An Explicit Construction of a Coded Caching Scheme with Heterogeneous Cache Sizes. Proceedings of 2024 International Symposium on Information Theory and Its Applications. 2024. 340-345