Re: Creating a phrase match feature in LTR

[Dmitry Kan]

Hi Krishan,

What if you remove the query() wrapping?

{
  "name": "phraseMatch",
  "class": "org.apache.solr.ltr.feature.SolrFeature",
  "params": {
    "q": "{!complexphrase inOrder=true}fieldName:${input}"
  },
  "store": "_DEFAULT_"
}

or even:

{
  "name": "phraseMatch",
  "class": "org.apache.solr.ltr.feature.SolrFeature",
  "params": {
    "q": "{!complexphrase inOrder=true df=fieldName}${input}"
  },
  "store": "_DEFAULT_"
}


On Tue, Aug 25, 2020 at 9:59 AM krishan goyal <krishan1...@gmail.com> wrote:

> Hi,
>
> I am trying to create a phrase match feature (what "pf" does in
> dismax/edismax parsers)
>
> I've tried various ways to set it up
>
> {
>   "name": "phraseMatch",
>   "class": "org.apache.solr.ltr.feature.SolrFeature",
>   "params": {
>     "q": "{!complexphrase inOrder=true}query(fieldName:${input})"
>   },
>   "store": "_DEFAULT_"
> }
>
> This fails with the exception
>
> Exception from createWeight for SolrFeature [name=phraseMatch,
> params={q={!complexphrase inOrder=true}query(fieldName:${input})}] null
>
> But similar query works when used in the query reranking construct with
> these params
>
> rqq: "{!complexphrase inOrder=true v=$v1}",
> v1: "query(fieldName:"some text"~2^1.0,0)",
>
> What is the problem in the LTR configuration for the feature ?
>


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Dmitry Kan
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