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is_trained

bool is_trained() const;

Returns whether the index has been trained.

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index_name

std::string index_name() const;

Returns the name of the index.

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index_type

IndexType index_type() const;

Returns the type of the index (for example, IVF, IVFPQ, or IVFFlat).

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index_config

IndexConfig* index_config() const;

Returns a pointer to the index configuration.