2008 |
68 | EE | Ker-I Ko,
Fuxiang Yu:
On the Complexity of Convex Hulls of Subsets of the Two-Dimensional Plane.
Electr. Notes Theor. Comput. Sci. 202: 121-135 (2008) |
67 | EE | Yongxi Cheng,
Ker-I Ko,
Weili Wu:
On the complexity of non-unique probe selection.
Theor. Comput. Sci. 390(1): 120-125 (2008) |
2007 |
66 | EE | Ker-I Ko,
Fuxiang Yu:
Jordan Curves with Polynomial Inverse Moduli of Continuity.
Electr. Notes Theor. Comput. Sci. 167: 425-447 (2007) |
65 | EE | Ker-I Ko,
Fuxiang Yu:
On the complexity of computing the logarithm and square root functions on a complex domain.
J. Complexity 23(1): 2-24 (2007) |
64 | EE | Ker-I Ko,
Klaus Weihrauch,
Xizhong Zheng:
Editorial: Math. Log. Quart. 4-5/2007.
Math. Log. Q. 53(4-5): 325 (2007) |
63 | EE | Ker-I Ko,
Fuxiang Yu:
Jordan curves with polynomial inverse moduli of continuity.
Theor. Comput. Sci. 381(1-3): 148-161 (2007) |
2006 |
62 | EE | Vasco Brattka,
Peter Hertling,
Ker-I Ko,
Hideki Tsuiki:
Computability and complexity in analysis.
J. Complexity 22(6): 728 (2006) |
61 | EE | Fuxiang Yu,
Arthur W. Chou,
Ker-I Ko:
On the complexity of finding circumscribed rectangles and squares for a two-dimensional domain.
J. Complexity 22(6): 803-817 (2006) |
2005 |
60 | | Fuxiang Yu,
Arthur W. Chou,
Ker-I Ko:
On the Complexity of Finding Circumscribed Rectangles for a Two-Dimensional Domain.
CCA 2005: 341-355 |
59 | EE | Ker-I Ko,
Fuxiang Yu:
On the Complexity of Computing the Logarithm and Square Root Functions on a Complex Domain.
COCOON 2005: 349-358 |
58 | EE | Arthur W. Chou,
Ker-I Ko:
On the Complexity of Finding Paths in a Two-Dimensional Domain II: Piecewise Straight-Line Paths.
Electr. Notes Theor. Comput. Sci. 120: 45-57 (2005) |
57 | EE | Arthur W. Chou,
Ker-I Ko:
The computational complexity of distance functions of two-dimensional domains.
Theor. Comput. Sci. 337(1-3): 360-369 (2005) |
2004 |
56 | EE | Vasco Brattka,
Peter Hertling,
Ker-I Ko,
Ning Zhong:
Preface: MLQ - Math. Log. Quart. 4-5/2004.
Math. Log. Q. 50(4-5): 327-328 (2004) |
55 | EE | Arthur W. Chou,
Ker-I Ko:
On the complexity of finding paths in a two-dimensional domain I: Shortest paths.
Math. Log. Q. 50(6): 551-572 (2004) |
54 | EE | Lu Ruan,
Hongwei Du,
Xiaohua Jia,
Weili Wu,
Yingshu Li,
Ker-I Ko:
A greedy approximation for minimum connected dominating sets.
Theor. Comput. Sci. 329(1-3): 325-330 (2004) |
2002 |
53 | EE | Ker-I Ko,
Anil Nerode,
Klaus Weihrauch:
Foreword.
Theor. Comput. Sci. 284(2): 197 (2002) |
1998 |
52 | | Ker-I Ko:
On the Computability of Fractal Dimensions and Hausdorff Measure.
Ann. Pure Appl. Logic 93(1-3): 195-216 (1998) |
51 | | Ding-Zhu Du,
Ker-I Ko:
In Memoriam Ronald V. Book.
Theor. Comput. Sci. 207(1): 1-3 (1998) |
1996 |
50 | EE | Ker-I Ko:
Fractals and Complexity.
CCA 1996 |
49 | EE | Ker-I Ko,
Klaus Weihrauch:
On the Measure of Two-Dimensional Regions with Polynomial-Time computables Boundaries.
IEEE Conference on Computational Complexity 1996: 150-159 |
1995 |
48 | EE | Ker-I Ko:
Computational Complexity of Fixed Points and Intersection Points.
J. Complexity 11(2): 265-292 (1995) |
47 | | Arthur W. Chou,
Ker-I Ko:
Computational Complexity of Two-Dimensional Regions.
SIAM J. Comput. 24(5): 923-947 (1995) |
46 | EE | Ker-I Ko:
A Polynomial-Time Computable Curve whose Interior has a Nonrecursive Measure.
Theor. Comput. Sci. 145(1&2): 241-270 (1995) |
1994 |
45 | EE | Pekka Orponen,
Ker-I Ko,
Uwe Schöning,
Osamu Watanabe:
Instance Complexity.
J. ACM 41(1): 96-121 (1994) |
1993 |
44 | EE | Arthur W. Chou,
Ker-I Ko:
Some complexity issues on the simply connected regions of the two-dimensional plane.
STOC 1993: 1-10 |
1992 |
43 | | Ker-I Ko:
A Note on the Instance Complexity of Pseudorandom Sets.
Structure in Complexity Theory Conference 1992: 327-337 |
42 | | Ker-I Ko:
On the Computational Complexity of Integral Equations.
Ann. Pure Appl. Logic 58(3): 201-228 (1992) |
41 | EE | Ding-Zhu Du,
Ker-I Ko:
A note on best fractions of a computable real number.
J. Complexity 8(3): 216-229 (1992) |
1991 |
40 | | Ker-I Ko:
Integral Equations, Systems of Quadratic Equations, and Exponential-Time Completeness (Extended Abstract)
STOC 1991: 10-20 |
39 | | Ker-I Ko,
Wen-Guey Tzeng:
Three Sigma^p_2-Complete Problems in Computational Learning Theory.
Computational Complexity 1: 269-310 (1991) |
38 | | Ker-I Ko:
Separating the Low and High Hierarchies by Oracles
Inf. Comput. 90(2): 156-177 (1991) |
37 | | Ker-I Ko:
On the Complexity of Learning Minimum Time-Bounded Turing Machines.
SIAM J. Comput. 20(5): 962-986 (1991) |
36 | | Ker-I Ko:
On Adaptive Versus Nonadaptive Bounded Query Machines.
Theor. Comput. Sci. 82(1): 51-69 (1991) |
1990 |
35 | EE | Ker-I Ko:
On the Complexity of Learning Minimum Time-Bounded Turing Machines.
COLT 1990: 82-96 |
34 | | Ker-I Ko,
Assaf Marron,
Wen-Guey Tzeng:
Learning String Patterns and Tree Patterns from Examples.
ML 1990: 384-391 |
33 | | Ker-I Ko:
A note on separating the relativized polynomial time hierarchy by immune sets.
ITA 24: 229-240 (1990) |
32 | EE | Ker-I Ko:
Separating and Collapsing Results on the Relativized Probabilistic Polynomial-Time Hierarchy
J. ACM 37(2): 415-438 (1990) |
1989 |
31 | | Ker-I Ko:
Computational Complexity of Roots of Real Functions (Extended Abstract)
FOCS 1989: 204-209 |
30 | | Ker-I Ko:
Distinguishing Conjunctive and Disjunctive Reducibilities by Sparse Sets
Inf. Comput. 81(1): 62-87 (1989) |
29 | | Ker-I Ko:
Relativized Polynomial Time Hierarchies Having Exactly K Levels.
SIAM J. Comput. 18(2): 392-408 (1989) |
1988 |
28 | | Ker-I Ko:
Relativized Polynominal Time Hierarchies Having Exactly K Levels
STOC 1988: 245-253 |
27 | | Ronald V. Book,
Ker-I Ko:
On Sets Truth-Table Reducible to Sparse Sets.
SIAM J. Comput. 17(5): 903-919 (1988) |
26 | | Ker-I Ko:
Searching for Two Objects by Underweight Feedback.
SIAM J. Discrete Math. 1(1): 65-70 (1988) |
1987 |
25 | | Assaf Marron,
Ker-I Ko:
Identification of Pattern Languages from Examples and Queries
Inf. Comput. 74(2): 91-112 (1987) |
24 | | Ker-I Ko,
Chin-Ming Hua:
A Note on the Two-Variable Pattern-Finding Problem.
J. Comput. Syst. Sci. 34(1): 75-86 (1987) |
23 | | Ker-I Ko:
On Helping by Robust Oracle Machines.
Theor. Comput. Sci. 52: 15-36 (1987) |
22 | | Ker-I Ko:
Corrigenda: On the Continued Fraction Representation of Computable Real Numbers.
Theor. Comput. Sci. 54: 341-343 (1987) |
1986 |
21 | | Ker-I Ko,
Timothy J. Long,
Ding-Zhu Du:
A Note on One-Way Functions and Polynomial-Time Isomorphisms (Extended Abstract)
STOC 1986: 295-303 |
20 | | Ker-I Ko,
Timothy J. Long,
Ding-Zhu Du:
A Note on One- Way Functions and Polynomial Time Isomorphisms.
Structure in Complexity Theory Conference 1986: 196-196 |
19 | | Ker-I Ko,
Pekka Orponen,
Uwe Schöning,
Osamu Watanabe:
What Is a Hard Instance of a Computational Problem?.
Structure in Complexity Theory Conference 1986: 197-217 |
18 | | Ker-I Ko,
Shia-Chung Teng:
On the Number of Queries Necessary to Identify a Permutation.
J. Algorithms 7(4): 449-462 (1986) |
17 | EE | Ker-I Ko:
On the computational complexity of best Chebyshev approximations.
J. Complexity 2(2): 95-120 (1986) |
16 | | Ker-I Ko,
Timothy J. Long,
Ding-Zhu Du:
On One-Way Functions and Polynomial-Time Isomorphisms.
Theor. Comput. Sci. 47(3): 263-276 (1986) |
15 | | Ker-I Ko:
On the Continued Fraction Representation of Computable Real Numbers.
Theor. Comput. Sci. 47(3): 299-313 (1986) |
14 | | Ker-I Ko:
On the Notion of Infinite Pseudorandom Sequences.
Theor. Comput. Sci. 48(3): 9-33 (1986) |
1985 |
13 | EE | Ker-I Ko:
Continuous optimization problems and a polynomial hierarchy of real functions.
J. Complexity 1(2): 210-231 (1985) |
12 | | Ker-I Ko:
Nonlevelable Sets and Immune Sets in the Accepting Density Hierarchy in NP.
Mathematical Systems Theory 18(3): 189-205 (1985) |
11 | | Ker-I Ko,
Uwe Schöning:
On Circuit-Size Complexity and the Low Hierarchy in NP.
SIAM J. Comput. 14(1): 41-51 (1985) |
10 | | Ker-I Ko:
On Some Natural Complete Operators.
Theor. Comput. Sci. 37: 1-30 (1985) |
1984 |
9 | | Ker-I Ko:
Reducibilities on Real Numbers.
Theor. Comput. Sci. 31: 101-123 (1984) |
1983 |
8 | | Ker-I Ko:
On the Computational Complexity of Ordinary Differential Equations
Information and Control 58(1-3): 157-194 (1983) |
7 | | Ker-I Ko:
On Self-Reducibility and Weak P-Selectivity.
J. Comput. Syst. Sci. 26(2): 209-221 (1983) |
6 | | Ker-I Ko:
On the Definitions of some Complexity Classes of Real Numbers.
Mathematical Systems Theory 16(2): 95-109 (1983) |
1982 |
5 | | Ker-I Ko:
Some Observations on the Probabilistic Algorithms and NP-hard Problems.
Inf. Process. Lett. 14(1): 39-43 (1982) |
4 | | Ker-I Ko:
Some Negative Results on the Computational Complexity of Total Variation and Differentiation
Information and Control 53(1/2): 21-31 (1982) |
3 | | Ker-I Ko:
The Maximum Value Problem and NP Real Numbers.
J. Comput. Syst. Sci. 24(1): 15-35 (1982) |
2 | | Ker-I Ko,
Harvey Friedman:
Computational Complexity of Real Functions.
Theor. Comput. Sci. 20: 323-352 (1982) |
1981 |
1 | | Ker-I Ko,
Daniel J. Moore:
Completeness, Approximation and Density.
SIAM J. Comput. 10(4): 787-796 (1981) |