[R] MiscPsycho - incorrect levenshtein distance?

Doran, Harold HDoran at air.org
Wed Apr 21 15:12:29 CEST 2010


Ben

MiscPsycho 1.6 has been placed on CRAN with the bug fix. Should hit mirrors in a day or so. If for any reason you need it sooner, I can send the tar.gz file.

Thanks for the bug report.

-----Original Message-----
From: David Winsemius [mailto:dwinsemius at comcast.net] 
Sent: Wednesday, April 14, 2010 9:06 AM
To: Ben Meijering
Cc: r help; Doran, Harold
Subject: Re: [R] MiscPsycho - incorrect levenshtein distance?

Generally bug reports should go the the package emaintainer.

On Apr 14, 2010, at 5:08 AM, Ben Meijering wrote:

> For some strings I get a wrong (MiscPsycho) Levenstein distance:
>
I see you spelled it correctly in your subject line.

>> stringMatch("abc", "ab", normalize="NO")
> [1] 1
>
>> stringMatch("abc", "bc", normalize="NO")
> [1] 2
>
> I think the lines
>
> d <- matrix(0, nrow = n + 1, ncol = m + 1)
> d[, 1] <- 1:(n + 1)
> d[1, ] <- 1:(m + 1)
> d[1, 1] <- 0
>
> should be changed to
>
> d <- matrix(0, nrow = n + 1, ncol = m + 1)
> d[, 1] <- 0:n
> d[1, ] <- 0:m
>
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