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# Authorship Verification for Medieval Latin
Code to reproduce the experiments reported in the papers
["The Epistle to Cangrande Through the Lens of Computational Authorship Verification"](https://link.springer.com/chapter/10.1007/978-3-030-30754-7_15)
and
["L’Epistola a Cangrande al vaglio della Computational Authorship Verification: Risultati preliminari (con una postilla sulla cosiddetta XIV Epistola di Dante Alighieri)"](https://www.academia.edu/42297516/L_Epistola_a_Cangrande_al_vaglio_della_Computational_Authorship_Verification_risultati_preliminari_con_una_postilla_sulla_cosiddetta_XIV_Epistola_di_Dante_Alighieri_in_Nuove_inchieste_sull_Epistola_a_Cangrande_a_c._di_A._Casadei_Pisa_Pisa_University_Press_pp._153-192)
## Disclaimer:
The dataset is not distributed in this version. We have asked the Editors for permission to publish the corpus.
We are waiting for some of these responses to arrive.
## Running the Experiments
The script in __./src/author_identification.py__ executes the experiments. This is the script syntax (--help):
```
Authorship verification for Epistola XIII
positional arguments:
PATH Path to the directory containing the corpus (documents
must be named <author>_<texname>.txt)
positive Positive author for the hypothesis (default "Dante"); set
to "ALL" to check every author
optional arguments:
-h, --help show this help message and exit
--loo submit each binary classifier to leave-one-out validation
--unknown PATH path to the file of unknown paternity (default None)
```
The following command line:
```
cd src
python author_identification.py ../Corpora/CorpusI Dante --unknown ../Epistle/EpistolaXIII_1.txt
```
Will use all texts in ../Corpora/CorpusI as training documents to train a verificator for the
file ../Epistle/EpistolaXIII_1.txt assuming Dante is the positive class (i.e., it will check if, on the
basis of the evidence shown in other Dante's texts, the unknown one belongs to Dante or not).
The output is probabilistic, informing of the uncertainty that the classifier has in attributing the document
to the positive class.
Similarly, the command line:
```
cd src
python author_identification.py ../Corpora/CorpusI Dante --loo
```
will perform a cross-validation of the binary classifier for Dante using all training documents in a leave-one-out (LOO) fashion.