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# 异步分析任务的输出
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分析任务完成后，它将结果存储到您在请求中指定的 S3 存储桶中。

## 文本输入的输出
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无论哪种格式的文本输入文档（多类或多标签），任务输出都由一个名为 `output.tar.gz` 的文件组成。它是一个压缩的存档文件，其中包含一个带有输出的文本文件。

**Multi-class output**

当您使用在多类模式下训练的分类器时，结果会显示 `classes`。这些类中的每一个 `classes` 都是在训练分类器时用来创建类别集的类。

有关这些输出字段的更多详细信息，请参阅*亚马逊 Comprehend API* 参考[ClassifyDocument](https://docs.aws.amazon.com/comprehend/latest/APIReference/API_ClassifyDocument.html)中的。

以下示例使用以下互斥类。

```
DOCUMENTARY
SCIENCE_FICTION
ROMANTIC_COMEDY
SERIOUS_DRAMA
OTHER
```

如果您的输入数据格式为每行一个文档，则输出文件中的每行包含输入中的一行。每行都包括文件名、输入行的从零开始的行号以及文档中找到的一个或多个类。以 Amazon Comprehend 对单个实例正确分类的置信度作为结束。

例如：

```
{"File": "file1.txt", "Line": "0", "Classes": [{"Name": "Documentary", "Score": 0.8642}, {"Name": "Other", "Score": 0.0381}, {"Name": "Serious_Drama", "Score": 0.0372}]}
{"File": "file1.txt", "Line": "1", "Classes": [{"Name": "Science_Fiction", "Score": 0.5}, {"Name": "Science_Fiction", "Score": 0.0381}, {"Name": "Science_Fiction", "Score": 0.0372}]}
{"File": "file2.txt", "Line": "2", "Classes": [{"Name": "Documentary", "Score": 0.1}, {"Name": "Documentary", "Score": 0.0381}, {"Name": "Documentary", "Score": 0.0372}]}
{"File": "file2.txt", "Line": "3", "Classes": [{"Name": "Serious_Drama", "Score": 0.3141}, {"Name": "Other", "Score": 0.0381}, {"Name": "Other", "Score": 0.0372}]}
```

如果您的输入数据格式为每个文件一个文档，则输出文件包含每个文档一行。每行都有文件名和文档中找到的一个或多个类。以 Amazon Comprehend 对单个实例正确分类的置信度作为结束。

例如：

```
{"File": "file0.txt", "Classes": [{"Name": "Documentary", "Score": 0.8642}, {"Name": "Other", "Score": 0.0381}, {"Name": "Serious_Drama", "Score": 0.0372}]}
{"File": "file1.txt", "Classes": [{"Name": "Science_Fiction", "Score": 0.5}, {"Name": "Science_Fiction", "Score": 0.0381}, {"Name": "Science_Fiction", "Score": 0.0372}]}
{"File": "file2.txt", "Classes": [{"Name": "Documentary", "Score": 0.1}, {"Name": "Documentary", "Score": 0.0381}, {"Name": "Domentary", "Score": 0.0372}]}
{"File": "file3.txt", "Classes": [{"Name": "Serious_Drama", "Score": 0.3141}, {"Name": "Other", "Score": 0.0381}, {"Name": "Other", "Score": 0.0372}]}
```

**Multi-label output**

当您使用在多标签模式下训练的分类器时，结果会显示 `labels`。这些标签中的每一个 `labels` 都是在训练分类器时用来创建类别集的标签。

以下示例使用这些独特的标签。

```
SCIENCE_FICTION
ACTION
DRAMA
COMEDY
ROMANCE
```

如果您的输入数据格式为每行一个文档，则输出文件中的每行包含输入中的一行。每行都包括文件名、输入行的从零开始的行号以及文档中找到的一个或多个类。以 Amazon Comprehend 对单个实例正确分类的置信度作为结束。

例如：

```
{"File": "file1.txt", "Line": "0", "Labels": [{"Name": "Action", "Score": 0.8642}, {"Name": "Drama", "Score": 0.650}, {"Name": "Science Fiction", "Score": 0.0372}]}
{"File": "file1.txt", "Line": "1", "Labels": [{"Name": "Comedy", "Score": 0.5}, {"Name": "Action", "Score": 0.0381}, {"Name": "Drama", "Score": 0.0372}]}
{"File": "file1.txt", "Line": "2", "Labels": [{"Name": "Action", "Score": 0.9934}, {"Name": "Drama", "Score": 0.0381}, {"Name": "Action", "Score": 0.0372}]}
{"File": "file1.txt", "Line": "3", "Labels": [{"Name": "Romance", "Score": 0.9845}, {"Name": "Comedy", "Score": 0.8756}, {"Name": "Drama", "Score": 0.7723}, {"Name": "Science_Fiction", "Score": 0.6157}]}
```

如果您的输入数据格式为每个文件一个文档，则输出文件包含每个文档一行。每行都有文件名和文档中找到的一个或多个类。以 Amazon Comprehend 对单个实例正确分类的置信度作为结束。

例如：

```
{"File": "file0.txt", "Labels": [{"Name": "Action", "Score": 0.8642}, {"Name": "Drama", "Score": 0.650}, {"Name": "Science Fiction", "Score": 0.0372}]}
{"File": "file1.txt", "Labels": [{"Name": "Comedy", "Score": 0.5}, {"Name": "Action", "Score": 0.0381}, {"Name": "Drama", "Score": 0.0372}]}
{"File": "file2.txt", "Labels": [{"Name": "Action", "Score": 0.9934}, {"Name": "Drama", "Score": 0.0381}, {"Name": "Action", "Score": 0.0372}]}
{"File": "file3.txt”, "Labels": [{"Name": "Romance", "Score": 0.9845}, {"Name": "Comedy", "Score": 0.8756}, {"Name": "Drama", "Score": 0.7723}, {"Name": "Science_Fiction", "Score": 0.6157}]}
```

## 半结构化输入文档的输出
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对于半结构化输入文档，输出可以包括以下附加字段：
+ DocumentMetadata — 提取有关文档的信息。元数据包括文档中的页面列表，以及从每页中提取的字符数。如果请求包含 `Byte` 参数，则响应中会显示此字段。
+ DocumentType -输入文档中每页的文档类型。如果请求包含 `Byte` 参数，则响应中会显示此字段。
+  Page-level 错误-系统在处理输入文档时检测到的错误。如果系统未遇到任何错误，则该字段为空。

有关这些输出字段的更多详细信息，请参阅*亚马逊 Comprehend API* 参考[ClassifyDocument](https://docs.aws.amazon.com/comprehend/latest/APIReference/API_ClassifyDocument.html)中的。

以下示例显示了两页扫描的 PDF 文件的输出。

```
[{ #First page output
    "Classes": [
        {
            "Name": "__label__2 ",
            "Score": 0.9993996620178223
        },
        {
            "Name": "__label__3 ",
            "Score": 0.0004330444789957255
        }
    ],
    "DocumentMetadata": {
        "PageNumber": 1,
        "Pages": 2
    },
    "DocumentType": "ScannedPDF",
    "File": "file.pdf",
    "Version": "VERSION_NUMBER"
},
#Second page output
{
    "Classes": [
        {
            "Name": "__label__2 ",
            "Score": 0.9993996620178223
        },
        {
            "Name": "__label__3 ",
            "Score": 0.0004330444789957255
        }
    ],
    "DocumentMetadata": {
        "PageNumber": 2,
        "Pages": 2
    },
    "DocumentType": "ScannedPDF",
    "File": "file.pdf",
    "Version": "VERSION_NUMBER" 
}]
```