The museum also includes works by fellow painters Braque, Matisse, Mire, Degas, Renoir, and Rousseau collected by Picasso during his lifetime.
Picasso's favorite painter in his collection was Matisse. 
mnli hypothesis: Picasso's favorite painter in his collection was Matisse.  premise: The museum also includes works by fellow painters Braque, Matisse, Mire, Degas, Renoir, and Rousseau collected by Picasso during his lifetime.