Elasticsearch 術語聚合與出現

Question

有沒有辦法獲得索引中最常見單詞的列表以及這些單詞出現的記錄？

順便說一句。 如果我沒有在查詢中要求它，有沒有辦法擺脫聚合結果的hits ？

我正在使用 Elasticsearch 7.4.0。

示例查詢：

POST text-analysis/_search
{
    "aggs" : {
        "most_common_words" : {
            "terms": {
                "field" : "sentence"
            }
        }
    }
}

回復：

{
    "took": 5,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 63,
            "relation": "eq"
        },
        "max_score": 1.0,
        "hits": [
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "T64Nvm4BAE1yJwCxLvwo",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Lorem ipsum dolor sit amet, consectetur adipiscing elit."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "UK4Nvm4BAE1yJwCxLvwx",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Nam sodales justo eget varius blandit."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "Ua4Nvm4BAE1yJwCxLvw1",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Fusce velit erat, molestie nec varius et, semper quis arcu."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "Uq4Nvm4BAE1yJwCxLvw5",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Quisque maximus porta purus at dignissim."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "U64Nvm4BAE1yJwCxLvw8",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Donec blandit ipsum mauris, ornare aliquam mauris malesuada et."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "VK4Nvm4BAE1yJwCxLvw_",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Sed et venenatis nibh."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "Va4Nvm4BAE1yJwCxLvxD",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Aliquam semper, lorem et commodo cursus, quam turpis commodo sem, eget aliquet est mi in nibh."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "Vq4Nvm4BAE1yJwCxLvxG",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Maecenas metus diam, volutpat pharetra elit consequat, posuere pretium nisi."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "V64Nvm4BAE1yJwCxLvxJ",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Nam sem ligula, laoreet varius viverra quis, tincidunt id dui."
                }
            },
            {
                "_index": "text-analysis",
                "_type": "_doc",
                "_id": "WK4Nvm4BAE1yJwCxLvxL",
                "_score": 1.0,
                "_source": {
                    "data_set": "lorem_ipsum",
                    "sentence": "Integer tempor pulvinar mi, ut dignissim erat blandit et."
                }
            }
        ]
    },
    "aggregations": {
        "most_common_words": {
            "doc_count_error_upper_bound": 0,
            "sum_other_doc_count": 425,
            "buckets": [
                {
                    "key": "et",
                    "doc_count": 11
                },
                {
                    "key": "nec",
                    "doc_count": 11
                },
                {
                    "key": "ut",
                    "doc_count": 11
                },
                {
                    "key": "eget",
                    "doc_count": 9
                },
                {
                    "key": "sed",
                    "doc_count": 9
                },
                {
                    "key": "aliquam",
                    "doc_count": 8
                },
                {
                    "key": "est",
                    "doc_count": 8
                },
                {
                    "key": "in",
                    "doc_count": 8
                },
                {
                    "key": "molestie",
                    "doc_count": 8
                },
                {
                    "key": "quis",
                    "doc_count": 8
                }
            ]
        }
    }
}

預期響應：

{
    "aggregations": {
        "most_common_words": {
            "doc_count_error_upper_bound": 0,
            "sum_other_doc_count": 425,
            "buckets": [
                {
                    "key": "et",
                    "doc_count": 11,
                    "occurrences": [
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it.",
                        "A sentence with word et in it."
                    ]
                },
                {
                    "key": "nec",
                    "doc_count": 11,
                    "occurrences": [
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it.",
                        "A sentence with word nec in it."
                    ]
                }
                ...
            ]
        }
    }

Answer 1

使用size:0你不會在你的結果中得到命中。

POST text-analysis/_search
{
    "size":0,
    "aggs" : {
        "most_common_words" : {
            "terms": {
                "field" : "sentence"
            }
        }
    }
}