Donaldson–Thomas (DT) invariants are numerical invariants that count stable coherent sheaves on Calabi–Yau threefolds. However, DT invariants are well-defined only when the moduli space of stable coherent sheaves is proper. Kontsevich–Soibelman and Joyce–Song later independently developed invariants for 3-Calabi–Yau categories which make it possible to study generalized DT invariants. In this seminar, we introduce generalized DT invariants for categories associated with quivers with superpotentials.