Multimodal metadata assignment for cultural heritage artifacts

Abstract

We develop a multimodal classifier for the cultural heritage domain using a late fusion approach and introduce a novel dataset. The three modalities are Image, Text, and Tabular data. We based the image classifier on a ResNet convolutional neural network architecture and the text classifier on a multilingual transformer architecture (XML-Roberta). Both are trained as multitask classifiers. Tabular data and late fusion are handled by Gradient Tree Boosting. We also show how we leveraged a specific data model and taxonomy in a Knowledge Graph to create the dataset and to store classification results.