captchaOracle

This package implements new dataset, loss and model operations in a torch/luz framework to address the oracle data structure discussed in my doctorate thesis (in Portuguese).

The main objects of this package are:

• captcha_oracle(): creates annotated datasets from an initial model and functions to access the oracle of a website.
• captcha_dataset_oracle(): This object is the same as captcha_dataset() from the {captcha} package, but deals with a different data structure that incorporates incomplete information provided by the websites.
• net_captcha_oracle(): This object is the same as net_captcha() from the {captcha} package, but can consider an initial model as a parameter in its initialization method.
• oracle_loss(): This object implements the oracle loss proposed in the doctorate thesis, which incorporates the incomplete information provided by the oracle in the websites.
• captcha_accuracy_oracle(): calculates the accuracy of the model in the fitting process dealing with the new data structure provided by captcha_dataset_oracle().

The package also has an experimental feature to learn the parameters online, by automatically accessing the oracle in the web. It is implemented with the captcha_dataset_oracle_online() function. There is a script in this link providing an example of this experimental feature.

This package is experimental and it was built as a tool to make simulations for my doctorate thesis. It may have breaking changes before it is considered as stable.

License

MIT