Abstract: The invention relates to a computer-implemented method comprising: receiving (102) a set of pedigree scores (300, 512) of pairs of plant breeding units over two or more generations; receiving (104) an incomplete set of similarity scores (200, 510) of the pairs of the plant breeding unit pairs; aligning (106) the pedigree scores and the similarity scores of identical plant breeding unit pairs; automatically analyzing (108) the aligned pedigree scores and similarity scores for computing a predictive model (508) based on associations of the similarity scores and of the pedigree scores; using the predictive model for creating (112) a complete set of similarity scores (400, 518); and using (114) the complete set of similarity scores for computationally predicting a feature (522) of a plant breeding unit or of an offspring thereof.