Function mindspore::dataset::GTZAN
Defined in File datasets.h
Function Documentation
Function to create a GTZANDataset.
Note
The generated dataset has three columns [“waveform”, “sample_rate”, “label”].
- Parameters
dataset_dir – [in] Path to the root directory that contains the dataset.
usage – [in] Part of dataset of GTZAN, can be “train”, “valid”, “test”, or “all” (default = “all”).
sampler – [in] Shared pointer to a sampler object used to choose samples from the dataset. If sampler is not given, a
RandomSampler
will be used to randomly iterate the entire dataset (default = RandomSampler()).cache – [in] Tensor cache to use (default=nullptr, which means no cache is used).
- Returns
Shared pointer to the GTZANDataset.
/* Define dataset path and MindData object */ std::string folder_path = "/path/to/gtzan_dataset_directory"; std::shared_ptr<Dataset> ds = GTZANDataset(folder_path, usage = "all", std::make_shared<RandomSampler>(false, 10)); /* Create iterator to read dataset */ std::shared_ptr<Iterator> iter = ds->CreateIterator(); std::unordered_map<std::string, mindspore::MSTensor> row; iter->GetNextRow(&row); /* Note: In GTZAN dataset, each data dictionary has keys "waveform", "sample_rate" and "label" */ auto waveform = row["waveform"];