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Approximate string matching information


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In computer science, approximate string matching (often colloquially referred to as fuzzy string searching) is the technique of finding strings that match a pattern approximately (rather than exactly). The problem of approximate string matching is typically divided into two sub-problems: finding approximate substring matches inside a given string and finding dictionary strings that match the pattern approximately.

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Approximate string matching

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In computer science, approximate string matching (often colloquially referred to as fuzzy string searching) is the technique of finding strings that match...

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String metric

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for approximate string matching or comparison and in fuzzy string searching. A requirement for a string metric (e.g. in contrast to string matching) is...

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Pattern matching

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to substitute the matching pattern with some other token sequence (i.e., search and replace). Sequence patterns (e.g., a text string) are often described...

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Agrep

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agrep (approximate grep) is an open-source approximate string matching program, developed by Udi Manber and Sun Wu between 1988 and 1991, for use with...

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Edit distance

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minimizing edit distance. Approximate string matching can be formulated in terms of edit distance. Ukkonen's 1985 algorithm takes a string p, called the pattern...

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Sequential pattern mining

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operations on single sequences and can be based on exact string matching or approximate string matching methods for finding dispersed fixed length and maximal...

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Bitap algorithm

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algorithm) is an approximate string matching algorithm. The algorithm tells whether a given text contains a substring which is "approximately equal" to a given...

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Range minimum query

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= O(n). RMQs are used as a tool for many tasks in exact and approximate string matching. Several applications can be found in Fischer and Heun (2007)...

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Levenshtein distance

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front; insert "n" at the end). The Hamming distance is 4. In approximate string matching, the objective is to find matches for short strings in many longer...

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Phonetic algorithm

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similarly to the phonemes output by the processed audio signal. Approximate string matching Hamming distance Levenshtein distance Damerau–Levenshtein distance...

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Data cleansing

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address that does not have a valid postal code), or with fuzzy or approximate string matching (such as correcting records that partially match existing, known...

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Trie

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prefixes. Tries can be efficacious on string-searching algorithms such as predictive text, approximate string matching, and spell checking in comparison to...

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Longest common subsequence

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off the matching items at the beginning while start ≤ m_end and start ≤ n_end and X[start] = Y[start] start := start + 1 trim off the matching items at...

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Longest common substring

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science, a longest common substring of two or more strings is a longest string that is a substring of all of them. There may be more than one longest common...

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Ilan Sadeh

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on approximate string matching, Wiener Ziv Algorithm and Ornstein–Shields block-coding algorithm (1992). I. Sadeh – "On Approximate String Matching" IEEE...

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Regular grammar

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non-terminal symbols, a ∈ Σ is a terminal symbol, and ε denotes the empty string, i.e. the string of length 0. S is called the start symbol. In a left-regular grammar...

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Compressed pattern matching

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However we could always decode the entire text and then apply a classic string matching algorithm, but this usually requires more space and time and often...

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Nondeterministic finite automaton

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compiling a regular expression to an NFA that can efficiently perform pattern matching on strings. Conversely, Kleene's algorithm can be used to convert an NFA...

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Trigram search

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would involve no string matching, and could just query the index directly, which can be faster in practice. Approximate string matching Google Code Search...

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Spell checker

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replacements and modify the program's operation. Spell checkers can use approximate string matching algorithms such as Levenshtein distance to find correct spellings...

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Diff

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was independently discovered and described in Algorithms for Approximate String Matching, by Esko Ukkonen. The first editions of the diff program were...

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Metaphone

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Identification and Intelligence System Match Rating Approach Approximate string matching Hanging on the Metaphone, Lawrence Philips. Computer Language...

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