We calculate the minimal number of queries sufficient to find a local maximum point of a function on a discrete interval, for a model with M parallel queries, M 1. Matching upper and lower bounds are obtained. The bounds are formulated in terms of certain Fibonacci type sequences of numbers.
On the complexity of finding a local maximum of functions on discrete planar subsets
β Scribed by Anton Mityagin
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 237 KB
- Volume
- 310
- Category
- Article
- ISSN
- 0304-3975
No coin nor oath required. For personal study only.
β¦ Synopsis
We study how many values of an unknown integer-valued function f one needs to know in order to ΓΏnd a local maximum of f. We consider functions deΓΏned on ΓΏnite subsets of discrete plane. We prove upper bounds for functions deΓΏned on rectangles and present lower bounds for functions deΓΏned on arbitrary domains in terms of the size of the domain and the size of its border.
π SIMILAR VOLUMES
Problems associated with ΓΏnding strings that are within a speciΓΏed Hamming distance of a given set of strings occur in several disciplines. In this paper, we use techniques from parameterized complexity to assess non-polynomial time algorithmic options and complexity for the COMMON APPROXIMATE SUBST
## Abstract Let __G__ be a graph on __p__ vertices with __q__ edges and let __r__β=β__q__βββ__p__β=β1. We show that __G__ has at most ${15\over 16} 2^{r}$ cycles. We also show that if __G__ is planar, then __G__ has at most 2^__r__βββ1^β=β__o__(2^__r__βββ1^) cycles. The planar result is best possib