Home ARTnews News AI Model Reveals New Information About Authorship of 17th-Century El Greco Altarpiece El Greco: Christ on the Cross , ca. 1600–10 (left), and Baptism of Christ , ca. 1608-14. Courtesy Cleveland Museum of Art (left) and Wikimedia Commons (right) A group of scientists at Case Western Reserve University in Cleveland, Ohio, has built a new machine-learning program that might help art historians determine how many artists’ hands contributed to the creation of centuries-old artworks. The dozen researchers who published the paper in Science Advances range from physicists and computer scientists to art historians and anthropologists. The AI model is called PATCH, which stands for pairwise assignment training for classifying heterogeneity. It works by comparing 1-centimeter-square “patches” of artworks that are known to have been painted by an individual artist (rather than a group of artists, or a workshop, as was common during the early modern period).…