SenseML

SenseML is a query language that lets you extract structured data from PDF documents. A field is the basic SenseML query unit for extracting a piece of document data. The output of a field is a JSON key-value pair that structures the extracted data.

Here's a simple example of a field:

{

  "fields": [
    {
      "id": "name_of_output_key",
      "anchor": "an anchor is some text to match. An anchor can be an array of matches",
      "method": {
        "id": "label",
         "position": "below"
      }
    },
  ]
}

The following image shows this example in the Sensible app:

Click to enlarge

As the preceding image shows, here's the output of the example field:

{
  "name_of_output_key": {
    "type": "string",
    "value": "Below the matching anchor, this is the data to extract. The anchor is a label for this data."
  }
}

This example shows the following key concepts:

key	description
field	A query that extracts data in relationship to matched text. Its ID is the key for the extracted data. In this example, `name_of_output_key`.
anchor	Matched text that helps narrow down a location in the PDF from which to extract data. In this example, `"an anchor is some text to match..."`.
method	Defines how to expand out from the anchor and extract data. In this example, the Label method extracts data that's below the anchor (`"position": "below"`). For a list of methods, see Methods.

For a more complete SenseML example, see the SenseML introduction.