Extended Data Fig. 3: Comparison between Ithaca and the onomastics baseline’s chronological predictions.

The box plot shows the median and the mean distance between the predicted date and the ground-truth time interval, measured in years using the chronological distance metric (see Methods). In this plot, the bounds of the boxes are defined by the first and the third quartiles, and the whiskers by the minimum and maximum values. Ithaca’s mean distance is 2.2x lower than that of the onomastics baseline. Ithaca’s average prediction loss was 29.3 years from the ground-truth interval, while the median prediction loss was only 3 years. The onomastics baseline consists of n = 142 attributions provided by the human annotators.