Sig53 Dataset issue

[Jie-su]

Hi,

I am trying to use Sig53 datasets for my research, but I met some problems with it.

1. Does the sig53 equal to WidebandSig53? Since the impaired version of WindebandSig53 only consists of 250000 samples with a length of 262144. However, sig53 contains 5.2M samples in the paper.

2. The WidebandSig53 dataset's target contains multi-labels (as a list), and there are no documents related to the transformation.

Thanks,

Jie,

[lboegner]

Hi Jie-su,

Glad to hear you’re interested in Sig53 for your research!

1. Sig53 and WidebandSig53 are two different datasets:

   • Sig53 contains shorter examples of 4,096 IQ samples with a single signal class in each. This dataset is primarily meant to be used for signal classification research. More details on this dataset can be found in this paper: https://arxiv.org/pdf/2207.09918.pdf

   • WidebandSig53, on the other hand, contains longer examples of 262,144 IQ samples with potentially multiple, non-overlapping (in time and frequency) signal classes present. This dataset is primarily meant to be used for signal detection & signal recognition research. More details on this dataset can be found in this paper: https://arxiv.org/pdf/2211.10335.pdf

2. If using the SignalData object, the label for the WidebandSig53 dataset will be a list of SignalDescriptions, where each signal present in the data example has a SignalDescription element in the list. The WidebandSig53 dataset uses the DescToListTuple target transform at generation time, so when it is stored to disc, each example’s label is saved as a list of lists (rather than a list of SignalDescriptions), where the inner lists encompass the signal class, start, stop, center frequency, bandwidth, and SNR of each individual signal in the example.

Since I think the “issue” here is that we need better dataset documentation, I think we can close this as a duplicate of the existing issue @gvanhoy opened “Documentation: Better Dataset Documentation #18." Feel free to continue commenting with further questions in the meantime!

[Jie-su]

Hi,

Thanks for your explanation.

But I can't see how to generate Sig53 from the documentation, so does it already released or not?

Thanks,

Jie

[lboegner]

Both datasets have been released. For examples and documentation on how to generate and use each dataset, check out the following notebooks in the examples directory:
- Sig53: https://github.com/TorchDSP/torchsig/blob/main/examples/00_example_sig53_dataset.ipynb
- WidebandSig53: https://github.com/TorchDSP/torchsig/blob/main/examples/03_example_widebandsig53_dataset.ipynb

[Jie-su]

Thanks！

Jie