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Learned model to estimate number of distinct values (NDV) of a population using a small sample.

License: MIT License

Python 100.00%
cardinality-estimation number-of-distinct-values

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learned_ndv_estimator's Issues

Error in generating traning_data_generation and model_training, request for code update

Hi, I follow the readme page to generate training data but I found that I can not save f_s_list due to a data shape problem. I changed two parameters to obtain quick example results. My numpy version is 1.24.0 and the error that occurs in training_data_generation is shown as follows:
image

Besides, I found there is a bug in model_training that blocks the training loop,

def __init__(self, f_path, f_s_path, X):
. Line 55 declares three parameters for class ndvDatasetSparse but Line 80 does not provide the third parameter.
data = ndvDatasetSparse(join(data_path, "rfs_F_infos.npy"),

These two problems make generating training data and training the model not available. Could you please update the code when you are free, thank you very much.

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