Note: The Mahalanobis distance serves as a metric for evaluating the similarity between economic sectors. It provides a distance between industries in the skills space, weighting the different skills by the number of job postings in which they appear. The last three sectors of the graph correspond to the furthest to semiconductors. Distances were standardised, with a maximum distance of 1 (between semiconductors and lime and gypsum sectors) and the remaining distances ranging between 0 and 1 relative to the furthest distance.