> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sdf.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ml Functions

## `classify`

Returns a label predicted by the given classifier SVM model.

*Supported Signatures*

```sql theme={null}
function classify(map<bigint, double>, classifier) returns bigint
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#classify)

## `features`

Returns the map representing the feature vector.

*Supported Signatures*

```sql theme={null}
function features(double) returns map<bigint, double>
function features(double, double) returns map<bigint, double>
function features(double, double, double) returns map<bigint, double>
function features(double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double, double, double, double, double) returns map<bigint, double>
function features(double, double, double, double, double, double, double, double, double, double) returns map<bigint, double>
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#features)

## `learn_classifier`

Returns an SVM-based classifier model, trained with the given label and feature data sets.

*Supported Signatures*

```sql theme={null}
function learn_classifier(bigint, map<bigint, double>) returns classifier
function learn_classifier(double, map<bigint, double>) returns classifier
function learn_classifier(varchar, map<bigint, double>) returns classifier
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#learn_classifier)

## `learn_libsvm_classifier`

Returns an SVM-based classifier model, trained with the given label and feature data sets. You can control the training process by libsvm parameters.

*Supported Signatures*

```sql theme={null}
function learn_libsvm_classifier(bigint, map<bigint, double>, varchar) returns classifier
function learn_libsvm_classifier(double, map<bigint, double>, varchar) returns classifier
function learn_libsvm_classifier(varchar, map<bigint, double>, varchar) returns classifier
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#learn_libsvm_classifier)

## `learn_libsvm_regressor`

Returns an SVM-based regressor model, trained with the given target and feature data sets. You can control the training process by libsvm parameters.

*Supported Signatures*

```sql theme={null}
function learn_libsvm_regressor(bigint, map<bigint, double>, varchar) returns regressor
function learn_libsvm_regressor(double, map<bigint, double>, varchar) returns regressor
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#learn_libsvm_regressor)

## `learn_regressor`

Returns an SVM-based regressor model, trained with the given target and feature data sets.

*Supported Signatures*

```sql theme={null}
function learn_regressor(bigint, map<bigint, double>) returns regressor
function learn_regressor(double, map<bigint, double>) returns regressor
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#learn_regressor)

## `regress`

Returns a predicted target value by the given regressor SVM model.

*Supported Signatures*

```sql theme={null}
function regress(map<bigint, double>, regressor) returns double
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/ml.html#regress)