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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.