Text search on literals is supported through Lucene. Only vanilla keyword searches are currently supported.
The query syntax for the indexing is a subset of SPARQL. The code is Java and has yet to be officially released.
As one of the developers on the project (along with user aharth), feel free to ask any specific questions you may have here. The article is quite vague and so I refer you to a technical report at http://www.deri.ie/fileadmin/documents/DERI-TR-200 7-04-20.pdf/.
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There is a workshop paper on a preliminary version of such an algorithm at http://sw.deri.org/2005/07/n3rank/paper/paper.pdf.
Text search on literals is supported through Lucene. Only vanilla keyword searches are currently supported. The query syntax for the indexing is a subset of SPARQL. The code is Java and has yet to be officially released.
As one of the developers on the project (along with user aharth), feel free to ask any specific questions you may have here. The article is quite vague and so I refer you to a technical report at http://www.deri.ie/fileadmin/documents/DERI-TR-200 7-04-20.pdf/.