Hi Chris,
On 09/01/2020 17.50, Chris Tomlinson wrote:
Hello Br,
On Jan 9, 2020, at 3:34 AM, Mikael Pesonen <[email protected]> wrote:
Hi,
I asked about these few years ago so maybe there is some new ideas.
1) Is it possible to config text index so that it would add, for example, all
textual values (xsd:string etc) to index automatically? Now every property has
to be configured manually.
No it is not currently possible. Perhaps more detail on how you would see using such
a feature and how you would handle various literal datatypes (convert all to
xsd:string?) and then how would you search, currently searches are focussed on one or
more properties - a recent update allows to provide a list of properties that can be
searched in a single Lucene search. More detail is available at
https://jena.apache.org/documentation/query/text-query.html
<https://jena.apache.org/documentation/query/text-query.html>.
In ideal case all values that are of type string literal would be
indexed. Querys would work as now, you would define the properties you
are querying, for example
*(?concept ?score ?prefLabel) text:query (skos:prefLabel "tech*"
"lang:en") Of course I don't know how hard this would be to implement. *
2) Is there planned support for searching similar resources, based on the
Lucene index?
I’m not aware of any such plans. More detail would be needed to evaluate
feasibility, in particular how to recognize resources as similar.
Please note that the Jena+Lucene model is to index individual triples as Lucene
documents not entire graphs or models which in turn leads to indexing and
searching focussed on properties.
This would be fine. Atleast for our needs it would enough to find
similar values only, not entire resources.
Chris
Br
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