ML Functions¶
These powerful analysis functions give you automated predictions and insights into your data using machine learning. Snowflake provides an appropriate type of model for each feature, so you don’t have to be a machine learning expert to take advantage of them. All you need is your data.
Time-Series Functions¶
These features train a machine learning model on your time-series data to determine how a specified metric (for example, sales) varies over time and relative to other features of your data. The model then provides insights or predictions based on the trends detected in the data.
Forecasting predicts future metric values from past trends in time-series data.
Anomaly Detection flags metric values that differ from typical expectations.
Contribution Explorer helps you find dimensions and values that affect the metric in surprising ways.
Other Analysis Functions¶
These features don’t require time series data. The machine learning model is trained to distinguish various types of entities within your data.
Classification sort rows into two or more classes based on their most predictive features.
Cost Considerations¶
When you use ML functions, you incur storage and compute costs. These costs vary depending on the feature used and the quantity of data used in training and prediction.
The storage costs you incur reflect storage of the ML model instances created during the training step. To view the
objects associated with your model instance, navigate to your Account Usage views
(ACCOUNT_USAGE.TABLES and ACCOUNT_USAGE.STAGES). These objects appear with null database and schema columns. The
instance_id column, however, will be populated, indicating that these objects are contained in a model instance.
These objects are fully managed by the model instance, and you cannot access or delete them separately. To reduce
storage costs associated with your models, delete unused or obsolete models.
See Understanding compute cost for general information on Snowflake compute costs.
Using ML functions in Snowpark¶
session.call is not yet compatible with models created by ML functions. To call such a model in Snowpark, use
session.sql instead, as shown here.
session.sql('call my_model!FORECAST(...)').collect()