IAB Categorization

Using the IAB Classification feature, AssemblyAI can classify your transcription text with up to 5 out of 370 possible content categories. The top level categories are:

Automotive 
Books and Literature 
Business and Finance 
Careers 
Education 
Events and Attractions 
Family and Relationships 
Fine Art 
Food and Drink 
Healthy Living 
Hobbies and Interests 
Home and Garden 
Medical Health 
Movies 
Music and Audio 
News and Politics 
Personal Finance 
Pets 
Pop Culture 
Real Estate 
Religion and Spirituality 
Science 
Shopping 
Sports 
Style and Fashion 
Technology and Computing 
Television 
Travel 
Video Gaming 

Enabling IAB Categorization when submitting files for transcription

Simply include the iab_categories parameter in your POST request, and set this parameter to true, as shown in the cURL request below.

curl --request POST \
  --url https://api.assemblyai.com/v2/transcript \
  --header 'authorization: YOUR-API-TOKEN' \
  --header 'content-type: application/json' \
  --data '{"audio_url": "https://app.assemblyai.com/static/media/phone_demo_clip_1.wav", "iab_categories": true}'

Getting IAB Categories in the response

Once the transcription is complete, and you make a GET request to /v2/transcript/<id> to receive the transcription, there will be an additional key iab_categories_result in the JSON response, as shown below:

{
    # some keys have been hidden for readability
    ...
    "id": "tfos1wi4g-9f86-4465-9d7f-3740ae1668d2",
    "status": "completed",
    "text": "..."
    "iab_categories_result": {
        # 'status' will be "unavailable" in the rare chance that IAB results
        # were unavailable for this transcription
        "status": "success", 
        # 'results' contains a list of each paragraph of text in the transcription
        # along with the IAB labels that were predicted for that paragraph of text,
        # the confidence score for each label, and the timestamp for where the paragraph
        # of text occurred in the source audio file
        "results": [
            {
                "text": "Last year, I showed these two slides that...", 
                "labels": [
                    {
                        "relevance": 1.0, 
                        "label": "Science>Environment"
                    }
                ], 
                "timestamp": {
                    "start": 12350, 
                    "end": 164740
                }
            }, 
            {
                "text": "In the Andy's, this glacier is the source...", 
                "labels": [
                    {
                        "relevance": 1.0, 
                        "label": "BusinessAndFinance>Industries"
                    }, 
                    {
                        "relevance": 0.33, 
                        "label": "NewsAndPolitics>Politics"
                    }, 
                    {
                        "relevance": 0.33, 
                        "label": "Science>Environment"
                    }
                ], 
                "timestamp": {
                    "start": 164950, 
                    "end": 319890
                }
            }, 
        ],
        # for each unique IAB label detected in the 'results' array above,
        # the 'summary' key will show the relevancy for that label across
        # the entire transcription text; for example, if the "Science>Environment"
        # label is detected only 1 time in a 60 minute audio file, the 'summary'
        # key will show a low relevancy score for that label, since the entire
        # transcription was not found to be consistently be about "Science>Environment"        
        "summary": {
            "Science>Environment": 0.865, 
            "BusinessAndFinance>Industries": 1.0, 
            "NewsAndPolitics>Politics": 0.165, 
            "Technology&Computing": 0.15
        }
    }, 
}