Since many recent approaches to computational metaphor processing have used context-based features as input to the classification task (Shutova et al., 2012;Jang et al., 2015;Jang et al., 2016), the degree of success will largely be influenced by which part of the above life cycle the metaphor is in.
depending on the degree to which the metaphor is conventionalized in the language, it is expected to be far more difficult to detect using computational methods, since its domain essentially becomes indistinguishable from the rest of the context.