{
    "_source": [ "title" ],
    "explain": true,
    "size": 1,
    "query": {
        "bool": {
            "filter": [
                {
                    "bool": {
                        "should": [
                            {
                                "match": {
                                    "all": {
                                        "query": "example",
                                        "operator": "AND"
                                    }
                                }
                            },
                            {
                                "match": {
                                    "all.plain": {
                                        "query": "example",
                                        "operator": "AND"
                                    }
                                }
                            }
                        ]
                    }
                },
                {
                    "terms": {
                        "namespace": [
                            0
                        ]
                    }
                }
            ]
        }
    },
    "rescore": [
        {
            "window_size": 1024,
            "query": {
                "query_weight": 1,
                "rescore_query_weight": 1,
                "score_mode": "total",
                "rescore_query": {
                    "function_score": {
                        "score_mode": "sum",
                        "boost_mode": "sum",
                        "query": {
                            "sltr": {
                                "model": "20170911_enwiki_v1",
                                "params": {
                                    "query_string": "example"
                                }
                            }
                        },
                        "functions": [
                            {
                                "script_score": {
                                    "script": {
                                        "lang": "painless",
                                        "source": """
                                            double popularity = doc['popularity_score'].empty ? 0 : doc['popularity_score'].value;
                                            double norm_ltr = (_score - params.mean) / params.std;
                                            return popularity * params.w1 + norm_ltr * params.w2;
                                        """,
                                        "params": {
                                            "mean": 1.2,
                                            "std": 0.42,
                                            "w1": 0.8,
                                            "w2": 0.2
                                        }
                                    }
                                }
                            }
                        ]
                    }
                }
            }
        }
    ]
}