- #Fuzzy matching in excel update
- #Fuzzy matching in excel upgrade
- #Fuzzy matching in excel code
- #Fuzzy matching in excel free
If the letters could match in any order, then these two strings would be a 100% match:
This would preclude the "s" in Ask to match the "s" in Consulting. As I posted on October 17th, the characters must be in order to match. Would the two "Ask" strings not count as matching? But what about the s in Ask matching with the s in Consulting? And if this is not a legitimate match, then what about matching the two strings: There are supposed to be 11 characters that match. For example, in the comparison of the two strings: The problem definition is not entirely clear. If Len(strTry) > TopMatch Then TestString strTryĭamon Ostrander checked in with this note: 'Loop thru all ordered combinations of characters in strIn1 This method yields the correct percentages for each of the examples given in the challenge including the IBM case above, which yields 60%.įunction Fuzzy(strIn1 As String, strIn2 As String) As Singleĭim In1Mask(1 To 24) As Long 'strIn1 is 24 characters max
#Fuzzy matching in excel code
I believe it could be made much more efficient via the use of Grey Code rather than straight binary so that each time a match is found all lesser matches would automatically be eliminated. I limited the first string to 24 characters max since the algorithm used is not the fastest-it does an exhaustive compare against every ordered combination of characters in the first string. The function can be called either from VBA or directly from a worksheet using for example the syntax: I took a different approach to the problem, writing a function using only built-in VBA resources. I'll queue him up for one of the T-Shirts. I basically determined that once a match is made on the first string from the second string the next comparison starts from that point of the first string.įor R = 1 To Range("A65536").End(xlUp).Rowĭo While L Mid$(Fstr, T, 1) Then GoTo RSĭamon Ostrander followed up with this code. I guess this is kind of late for the contest, but my code lines are less then the ones you posted and it works from what I tested. It is not a UDF, but if you need to perform a fuzzy match on two columns of numbers it will work well.
#Fuzzy matching in excel update
com and I will periodically update the progress.Įd Acosta sent this note and a nice little bit of code.
#Fuzzy matching in excel free
The Blogger Comment feature is just so-so, so feel free to send advances to Chal MrExcel. Remember it shows posts in reverse chronological order, so the original post is at the bottom. I'll post any significant advances here in the Web log. These two words have all the same characters, but the longest section in order is l-v-s for a 60% match. Note that the characters have to be in order. That is 9 characters out of 11, for a 82% match. The characters that match are A-space-S-h-u-l-m-a-n. This has 3 characters that match, divided by 5 in the top string, for a 60% match. We'll divide the 11 by the length of string1, 11/15 = 73% match. There are 11 characters which match and are in order between these two strings. This routine will allow us to say that one string is a 75% match to the other string. Here is the problem: Build in VBA a routine that will calculate a "fuzzy match" between two text strings. Whoever makes the most significant contribution to the answer with receive one of the super-deluxe embroidered long sleeve denim shirts. The calendar is packed with Winter Olympic history, schedules, and cool stickers for the kids. Everyone who contributes and makes a significant contribution towards moving this challenge along to a solution will win an official Olympic Winter Games Salt Lake 2002 Calendar.
#Fuzzy matching in excel upgrade
This is a tough challenge, so I will upgrade the prize offerings. So - as a great big experiment, I am proud to announce the return of the Challenge. We brought the challenge back in 2001 to solve this fuzzy match problem.
It would be an insane problem and I would offer a Coffee Mug to whoever came up with the best answer. Back in 1999, I used to publish a monthly challenge.
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