Table 2 Overview of the preliminary and final labels per topic
From: X-ray fluorescence (XRF) on painted heritage objects: a review using topic modeling
topic | Preliminary labels | Final labels |
|---|---|---|
T1 | XRF techniques for elemental analysis | The development and optimization of XRF instruments and methods for elemental analysis of layered heritage objects |
T2 | Archaeological pottery | Archaeological pottery |
T3 | Paints | Modern manufactured painting materials |
T4 | X-ray spectroscopic techniques (including SEM–EDX) | Multi-analytical approaches for stratigraphic analysis of painted heritage objects |
T5 | Different archaeological artefacts (including walls, mural paintings, wooden objects) | Multi-analytical approaches for studying the conservation state of immovable heritage |
T6 | Pigments | Pigments |
T7 | Glass and illuminated manuscripts | Glass-based objects, illuminated manuscripts and stoneware decorative objects |
T8 | Painting materials and techniques | Painting materials and techniques |
T9 | Imaging techniques for the study of easel paintings (including MA-XRF scanning) | Imaging techniques for the study of easel paintings (including MA-XRF scanning) |
T10 | X-ray techniques for the study of paint degradation | Multi-analytical approaches (including SR-based X-ray methods) for the study of degradation products, processes and causes of inorganic yellow pigments in oil paintings |