Corrigendum: Trait matching without traits: using correspondence analysis to investigate the latent structure of interaction networks

In the original article, Equation (2) should read D r − 1 P 0 D c − 1 = U D V ⊤  instead of P 0 = U D V ⊤ . The paragraph directly above Equation (2) should thus be reformulated as: ``CA is based on the generalized singular value decomposition of the matrix D r − 1 P 0 D c − 1 , where P 0 = P − r c ⊤  is the double centered matrix of interaction frequencies P ."