String searching algorithms, sometimes called string matching algorithms, are an important class of string algorithms that try to find a place where one or several strings (also called patterns) are found within a larger string or text. String matching is a classical problem in computer science. ...
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The problem has different variations with different levels of difficulties depending on the types of the pattern as well as the constraint imposed on the matching. We present new results both of theoretical interest and practical value. We present a new algorithm for approximate regular expression ...
The popularization of cloud-based services has made the problem even more critical.This paper presents an efficient multi-pattern string matching algorithm, called DFC. DFC significantly re- duces the number of memory accesses and cache misses by using small and cache-friendly data structures and ...
Since it runs faster than predicted by the above worst-case bound, we reanalyze the algorithm and show thateagerruns in timeO(min(t |S|+m(t, S) ∣ t>0) log σ)), where for an input p-stringS, m(t, S) is the number of maximal p-matches of length at leasttthat occur with...
In order not to lose accuracy, we have to increase the sample size by a factor of 3. If we originally stored each hashed value using 64 bits, the improvement by using b = 1 will be 64/3 = 21.3. Algorithm 1 illustrates the procedure of b-bit minwise hashing, based on the ...
The operational basis for the treatment of misspelled queries consists of replacing the original string matching algorithm with a more flexible approximate method. It is interesting to note that practical constraints for solving misspellings in IR systems are different from those present in Text Processin...
"Experienced algorithm designers rely heavily on a set of building blocks and on the tools needed to put the blocks together into an algorithm. The understanding of these basic blocks and tools is therefore critical to the understanding of algorithms. Many of the blocks and tools needed for para...
We show that using a psuffix tree for a pattern p-string P, it is possible to search for all p-matches of P within a text p-string T in space linear in P ... 展开 关键词: Theoretical or Mathematical/ algorithm theory data structures pattern matching/ pattern matching parameterized ...
Silverlight also contains a few differences in string comparison that are related to security rather than size. The default for most of the operations that involve string comparison in the desktop Framework is CurrentCulture. In Silverlight, the operations that involve partial matching, which includes...