jaro-winkler

Python performance improvement request for winkler

由 依然范特西╮ 提交于 2020-01-02 06:12:29
问题 I'm a python n00b and I'd like some suggestions on how to improve the algorithm to improve the performance of this method to compute the Jaro-Winkler distance of two names. def winklerCompareP(str1, str2): """Return approximate string comparator measure (between 0.0 and 1.0) USAGE: score = winkler(str1, str2) ARGUMENTS: str1 The first string str2 The second string DESCRIPTION: As described in 'An Application of the Fellegi-Sunter Model of Record Linkage to the 1990 U.S. Decennial Census' by

Python performance improvement request for winkler

由 早过忘川 提交于 2020-01-02 06:11:15
问题 I'm a python n00b and I'd like some suggestions on how to improve the algorithm to improve the performance of this method to compute the Jaro-Winkler distance of two names. def winklerCompareP(str1, str2): """Return approximate string comparator measure (between 0.0 and 1.0) USAGE: score = winkler(str1, str2) ARGUMENTS: str1 The first string str2 The second string DESCRIPTION: As described in 'An Application of the Fellegi-Sunter Model of Record Linkage to the 1990 U.S. Decennial Census' by

An implementation of the Jaro Winkler distance algorithm in Transact SQL

由 倾然丶 夕夏残阳落幕 提交于 2019-12-21 06:39:16
问题 I've been wondering for months about how to implement this algorithm in Transact SQL, https://en.wikipedia.org/wiki/Jaro%E2%80%93Winkler_distance How can it be done? 回答1: Today I finally stumbled upon this Stack Overflow-answer by leebickmtu showing an implementation in C#, originally ported from Java. I took the liberty to port it to a Transact SQL function, enjoy! IF OBJECT_ID (N'dbo.InlineMax', N'FN') IS NOT NULL DROP FUNCTION dbo.InlineMax; GO CREATE FUNCTION dbo.InlineMax(@valueOne int,

how do you make a string dictionary function in lua?

由 混江龙づ霸主 提交于 2019-12-13 18:48:28
问题 Is there a way if a string is close to a string in a table it will replace it with the one in the table? Like a spellcheck function, that searches through a table and if the input is close to one in the table it will fix it , so the one in the table and the string is the same? 回答1: You can use this code :) Reference code is from here : https://github.com/badarsh2/Algorithm-Implementations/blob/master/Levenshtein_distance/Lua/Yonaba/levenshtein.lua local function min(a, b, c) return math.min

Using Jaro-Winkler, is distance between A and B the same as B and A?

由 北城以北 提交于 2019-12-13 03:19:22
问题 I'm using the following class to calculate the Jaro-Winkler distance between two strings. What I'm noticing is that the distance calculated between string A and B is not always the same as string B and A. Is this to be expected? RAMADI ~ TRADING 0.73492063492063 TRADING ~ RAMADI 0.71825396825397 Demo 回答1: Turns out, there is a bug in the PHP versions of the Jaro-Winkler string comparison method found many places online. Currently, string A compared to string B will yield a different result to

What is the third parameter to Text::JaroWinkler::strcmp95 for?

由 随声附和 提交于 2019-12-12 02:25:45
问题 I am interested in the Jaro-Winkler module written in Perl to compute the distance (or similarity) between two strings: http://search.cpan.org/~scw/Text-JaroWinkler-0.1/JaroWinkler.pm The syntax of the function is not clear to me; I could not find any clear documentation of it. Here is the sample code: #!/usr/bin/perl use 5.10.0; use Text::JaroWinkler qw( strcmp95 ); print strcmp95("it is a dog","i am a dog.",11); What exactly does the 11 represent? I gather it is a length. Which length? The

Jaro Winkler in sql server

由 强颜欢笑 提交于 2019-12-11 23:03:10
问题 I tried to find the UDF dbo.fn_calculateJaroWinkler (for computing the Jaro Winkler distance) for sql server and couldn't find it. Does anyone wrote it and could share? 回答1: http://www.sqlservercentral.com/articles/Fuzzy+Match/65702/ You may have to join sqlservercentral to view the page. There is a step by step explanation here on how to create the functions. I am actually using it myself now to do fuzzy logic. It works but it is a bit slow for large data sets. If you have any optimization

Jaro-winkler function: why is the same score matching very similar and very different words?

由 寵の児 提交于 2019-12-11 02:45:16
问题 I am using the jaro-winkler fuzzy matching to match names. I am trying to determine a cut-off range for the similarity score. If the names are too different, I want to exclude them for manual review. While anything below .4 seemed to be different names entirely, the .4 range seemed fairly similar. But then I came across strange exceptions, where some names in that range are entirely different, while some names are only one or two letters off(see example below). Can someone explain where there

Jaro-Winkler string comparison function in SAS

由 房东的猫 提交于 2019-12-07 18:35:22
问题 Is there an implementation of the Jaro-Winkler string comparison in SAS? It looks like Link King has Jaro-Winkler, but I'd prefer the flexibility of calling the function myself. Thanks! 回答1: There is no built in function for jaro-winkler distance that I am aware of. @Itzy already reference the only ones that I know of. You can roll you own functions with proc fcmp though if you feel up to it. I'll even give you a head start with the code below. I just tried to follow the wikipedia article on

Jaro-Winkler string comparison function in SAS

由 白昼怎懂夜的黑 提交于 2019-12-06 12:33:59
Is there an implementation of the Jaro-Winkler string comparison in SAS? It looks like Link King has Jaro-Winkler, but I'd prefer the flexibility of calling the function myself. Thanks! There is no built in function for jaro-winkler distance that I am aware of. @Itzy already reference the only ones that I know of. You can roll you own functions with proc fcmp though if you feel up to it. I'll even give you a head start with the code below. I just tried to follow the wikipedia article on it. It certainly isn't close to being a perfect representation of Bill Winkler's strcmp.c file by any means
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