model.json

{
    "type":"org.apache.solr.ltr.ranking.RankSVMModel",
    "name":"myModelName",
    "features":[
        { "name": "documentRecency"},
        { "name": "originalScore"},
        { "name": "inTitle"}
    ],
    "params":{
        "weights": {
            "inTitle": 1.0,
            "originalScore": 1.0,
            "documentRecency": 0.1
        }

    }
}