Thanks, Christian.

When I download and unzip the latest version, start the HTTP server and navigate to localhost:8080, I'm given the following error:

Stopped at [...]/basex/webapp/dba/jobs/job-result.xqm, 34/49:

[XPST0017] Unknown function: string:nl.

It's easy enough to work around by editing job-result.xqm (and jobs.xqm in which string:nl also appears), but wanted to bring it to your attention in case you weren't aware.

Cheers,

Jack

On Fri, 10 May 2024, 7:37 pm Christian Grün, <christian.gruen@gmail.com> wrote:

Hi Hack,

That’s been helpful, thanks. We’ve aligned our Damerau/Levenshtein algorithms, the latest version should behave as expected [1, 2].

Best,

Christian

[1] https://files.basex.org/releases/latest/

[2] https://github.com/BaseXdb/basex/commit/6889ac108c6b32d448d640d53ec098bbb8938f06

On Thu, May 9, 2024 at 8:29 AM Jack Steyn <steynjack@gmail.com> wrote:

Hi,

According to my copy of BaseX 10.7,

string:levenshtein('oil field', 'oilfield')

and 

string:levenshtein('oil field', 'coalfield') 

both return the same value, 0.7777777777777778.

My understanding is that the Levenshtein-Damerau distance between 'oil field' and 'oilfield' is 1 and between 'oil field' and 'coalfield' is 3, so following the formula from https://docs.basex.org/wiki/String_Module#string:levenshtein

1.0 – distance / max(length of strings)

should give 0.888... and 0.666... respectively.

Am I off-base here or is there something awry with string:levenshtein?

Cheers,

Jack