Azure Personalizer client library for Python

Azure Personalizer is a cloud-based service that helps your applications choose the best content item to show your users. You can use the Personalizer service to determine what product to suggest to shoppers or to figure out the optimal position for an advertisement. After the content is shown to the user, your application monitors the user's reaction and reports a reward score back to the Personalizer service. This ensures continuous improvement of the machine learning model, and Personalizer's ability to select the best content item based on the contextual information it receives.

Getting started

Prerequisites

• Python 3.7 or later is required to use this package.
• You must have an Azure subscription and a Personalizer resource to use this package.

Install the package

Install the Azure Personalizer client library for Python with pip:

pip install azure-ai-personalizer

Note: This version of the client library defaults to the 2022-09-01-preview version of the service.

This table shows the relationship between SDK versions and supported API versions of the service:

Key concepts

PersonalizerClient

The synchronous PersonalizerClient and asynchronous PersonalizerClient provide synchronous and asynchronous operations to:

• Manage the machine learning model and learning settings for the Personalizer service.
• Manage the properties of the Personalizer service such as the learning mode, exploration percentage.
• Run counterfactual evaluations on prior historical event data.
• Rank a set of actions, then activate and reward the event.
• Use multi-slot personalization when there are more than one slots.
• Manage the properties of the Personalizer service.
• Run counterfactual evaluations on prior historical event data.

Examples

The following examples outline the main scenarios when using personalizer in single-slot and multi-slot configurations.

• Send rank and reward when using a single slot
• Send rank and reward when using multiple slots

Send rank and reward

from azure.ai.personalizer import PersonalizerClient
from azure.core.credentials import AzureKeyCredential

endpoint = "https://<my-personalizer-instance>.cognitiveservices.azure.com/"
credential = AzureKeyCredential("<api_key>")

client = PersonalizerClient(endpoint, credential)

# The list of actions to be ranked with metadata associated for each action.
actions = [
    {
        "id": "Video1",
        "features": [
            {"videoType": "documentary", "videoLength": 35, "director": "CarlSagan"},
            {"mostWatchedByAge": "50-55"},
        ],
    },
    {
        "id": "Video2",
        "features": [
            {"videoType": "movie", "videoLength": 120, "director": "StevenSpielberg"},
            {"mostWatchedByAge": "40-45"},
        ],
    },
]

# Context of the user to which the action must be presented.
context_features = [
    {"currentContext": {"day": "tuesday", "time": "night", "weather": "rainy"}},
    {
        "userContext": {
            "payingUser": True,
            "favoriteGenre": "documentary",
            "hoursOnSite": 0.12,
            "lastWatchedType": "movie",
        },
    },
]

request = {
    "actions": actions,
    "contextFeatures": context_features,
}

rank_response = client.rank(request)
print("Sending reward event")
client.reward(rank_response.get("eventId"), {"value": 1.0})

Send multi-slot rank and reward

from azure.ai.personalizer import PersonalizerClient
from azure.core.credentials import AzureKeyCredential

endpoint = "https://<my-personalizer-instance>.cognitiveservices.azure.com/"
credential = AzureKeyCredential("<api_key>")

client = PersonalizerClient(endpoint, credential)

# We want to rank the actions for two slots.
slots = [
    {
        "id": "Main Article",
        "baselineAction": "NewsArticle",
        "positionFeatures": [{"Size": "Large", "Position": "Top Middle"}],
    },
    {
        "id": "Side Bar",
        "baselineAction": "SportsArticle",
        "positionFeatures": [{"Size": "Small", "Position": "Bottom Right"}],
    },
]

# The list of actions to be ranked with metadata associated for each action.
actions = [
    {"id": "NewsArticle", "features": [{"type": "News"}]},
    {"id": "SportsArticle", "features": [{"type": "Sports"}]},
    {"id": "EntertainmentArticle", "features": [{"type": "Entertainment"}]},
]

# Context of the user to which the action must be presented.
context_features = [
    {"user": {"profileType": "AnonymousUser", "latLong": "47.6,-122.1"}},
    {"environment": {"dayOfMonth": "28", "monthOfYear": "8", "weather": "Sunny"}},
    {"device": {"mobile": True, "windows": True}},
    {"recentActivity": {"itemsInCart": 3}},
]

request = {
    "slots": slots,
    "actions": actions,
    "contextFeatures": context_features,
}
rank_response = client.rank_multi_slot(request)
print("Sending reward event for Main Article slot")
client.reward_multi_slot(
    rank_response.get("eventId"),
    {"reward": [{"slotId": "Main Article", "value": 1.0}]})

Troubleshooting

General

Personalizer client library will raise exceptions defined in Azure Core.

Logging

This library uses the standard logging library for logging.

Basic information about HTTP sessions (URLs, headers, etc.) is logged at INFO level.

Detailed DEBUG level logging, including request/response bodies and unredacted headers, can be enabled on the client or per-operation with the logging_enable keyword argument.

See full SDK logging documentation with examples here.

Optional Configuration

Optional keyword arguments can be passed in at the client and per-operation level. The azure-core reference documentation describes available configurations for retries, logging, transport protocols, and more.

Next steps

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit cla.microsoft.com.

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.