Train Index

Builds the index using the specified training configuration. Required before efficient querying. Prior to calling this, all queries will be conducted using encrypted exhaustive search. After, they will be conducted using encrypted ANN search.

void TrainIndex(const TrainingConfig& training_config = TrainingConfig());

Parameters

Parameter	Type	Description
training_config	TrainingConfig	(Optional) Training parameters (batch size, max iterations, etc.).

There must be at least 2 * n_lists vector embeddings in the index prior to to calling this function.

Exceptions

Throws if there are not enough vector embeddings in the index for training (must be at least 2 * n_lists).

std::runtime_exception

• Throws if there are not enough vector embeddings in the index for training (must be at least 2 * n_lists).
• Throws if the index could not be trained.

Example Usage

cyborg::TrainingConfig config(128, 10, 1e-4, 1024);
index->TrainIndex(config);