منابع مشابه
Designing optimal- and fast-on-average pattern matching algorithms
Given a pattern w and a text t, the speed of a pattern matching algorithm over t with regard to w, is the ratio of the length of t to the number of text accesses performed to search w into t. We first propose a general method for computing the limit of the expected speed of pattern matching algorithms, with regard to w, over iid texts. Next, we show how to determine the greatest speed which can...
متن کاملFast Average-Case Pattern Matching on Weighted Sequences
A weighted string over an alphabet of size σ is a string in which a set of letters may occur at each position with respective occurrence probabilities. Weighted strings, also known as position weight matrices or uncertain sequences, naturally arise in many contexts. In this article, we study the problem of weighted string matching with a special focus on average-case analysis. Given a weighted ...
متن کاملFast pattern-matching on indeterminate strings
In a string x on an alphabet Σ, a position i is said to be indeterminate iff x[i] may be any one of a specified subset {λ1, λ2, . . . , λj} of Σ, 2 ≤ j ≤ |Σ|. A string x containing indeterminate positions is therefore also said to be indeterminate. Indeterminate strings can arise in DNA and amino acid sequences as well as in cryptological applications and the analysis of musical texts. In this ...
متن کاملFast Least Square Matching
Least square matching (LSM) is one of the most accurate image matching methods in photogrammetry and remote sensing. The main disadvantage of the LSM is its high computational complexity due to large size of observation equations. To address this problem, in this paper a novel method, called fast least square matching (FLSM) is being presented. The main idea of the proposed FLSM is decreasing t...
متن کاملQuantum Pattern Matching
We propose a quantum algorithm for closest pattern matching which allows us to search for as many distinct patterns as we wish in a given string (database), requiring a query function per symbol of the pattern alphabet. This represents a significant practical advantage when compared to Grover’s search algorithm as well as to other quantum pattern matching methods [1], which rely on building spe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Algorithmica
سال: 2015
ISSN: 0178-4617,1432-0541
DOI: 10.1007/s00453-015-0060-4