- M. Houle and H. Imai and K. Imai and J., Orthogonal Weighted $L_1$ and $L_\infty$ Approximation and Applications,
*Discrete Applied Mathematics*,**43**, 217-232, .

- H. Imai, Geometric Algorithms for Linear Programming,
*IEICE Transactions on Fundamentals*,**E76-A**,**3**, 259-264, .

- K. Imai and H. Imai, Higher-Order Dynamic Voronoi Diagrams and Its Applications,
*Transactions of the Information Processing Society of Japan*,**34**,**12**, 2458-2463, .

- Y. Aoki and H. Imai and K. Imai and D. Rappaport, Probing a Set of Hyperplanes by Lines and Related Problems,
*Proceedings of the 3rd Workshop on Algorithms and Data Structures*,**709**, 72-82, .

- S. Hasegawa and H. Imai and M. Inaba and N. Katoh and J. Nakano, Efficient Algorithms for Variance-Based $k$-Clustering,
*Proceedings of the 1st Pacific Conference on Computer Graphics and Applications*, 75-89, .

- S. Hasegawa and H. Imai and M. Ishiguro, $\epsilon$-Approximations of $k$-Label Spaces,
*Proceedings of the 4th International Workshop on Algorithmic Learning Theory*,**744**, 288-299, .

- Y. Dai and H. Imai and K. Iwano and N. Katoh, How to Treat Delete Requests in Semi-Online Problems,
*Proceedings of the 4th International Symposium on Algorithms and Computation*,**762**, 48-57, .

- T. Ikeda, A Probabilistic Selection Network with Butterfly Networks,
*Proceedings of the 4th International Symposium on Algorithms and Computation*,**762**, 267-276, .

- S. Tani and K. Hamaguchi and S. Yajima, The Complexity of the Optimal Variable Ordering Problems of Shared Binary Decision Diagrams,
*Proceedings of the 4th International Symposium on Algorithms and Computation*,**762**, 389-398, .

- H. Koga, Randomized On-Line Algorithms for the Page Replication Problem,
*Proceedings of the 4th International Symposium on Algorithms and Computation*,**762**, 436-445, .

- N. Ukiyama and H. Imai, Parallel Multiple Alignments and Their Implementation on {CM5},
*Proceedings of the Genome Informatics Workshop IV*, 103-108, .

- G. Shibayama and H. Imai, Finding $K$-best Alignments of Multiple Sequences,
*Proceedings of the Genome Informatics Workshop IV*, 120-129, .

- H. Imai, Computational Geometry and Linear Programming,
*Proceedings of the 2nd NEC Research Symposium*, 9-28, .

- T. Sasaki and H. Imai and T. Asano and K. Sugihara, Computational Algebra and Computational Geometry, , .

- H. Imai, Computational-Geometric Approach to Linear Programming, 1-46
*Discrete Structures and Algorithms II*, , .

- K. Imai and H. Imai, Generalized Geometric Fitting Problem and Weighted Voronoi Diagrams,
*Memoirs of Mathematical Research Institute*,**833**, 110-119, .

- T. Ikeda, A Probabilistic Selection Network with Butterfly Networks,
**IPSJ SIG Notes SIGAL-33-6**, , .

- H. Koga, On-Line Algorithms for Distributed Shared Memory,
**IPSJ SIG Notes SIGAL-33-7**, , .

- S. Hasegawa and H. Imai and M. Inaba and N. Katoh and J. Nakano, Efficient Algorithms for Variance-Based $k$-Clustering,
**IPSJ SIG Notes SIGAL-33-12**, , .

- M., On the Shortest-Path Algorithms for Route Navigation,
**IEICE Technical Report CAS93-60**, , .

- S. Hasegawa and H. Imai and M. Inaba and N. Katoh and J. Nakano, Efficient Algorithms for Variance-Based $k$-Clustering,
*ISM Joint-Research Reports*, , .