This book constitutes the refereed proceedings of the 14th International Workshop of
Descriptional Complexity of Formal Systems 2012 held in Braga Portugal in July 2012. The 20
revised full papers presented together with 4 invited papers were carefully reviewed and
selected from 33 submissions. The topics covered are automata grammars languages and related
systems various measures and modes of operations (e.g. determinism and nondeterminism)
trade-offs between computational models and or operations succinctness of description of
(finite) objects state explosion-like phenomena circuit complexity of Boolean functions and
related measures resource-bounded or structure-bounded environments frontiers between
decidability and undecidability universality and reversibility structural complexity formal
systems for applications (e.g. software reliability software and hardware testing modeling
of natural languages) nature-motivated (bio-inspired) architectures and unconventional models
of computing Kolmogorov complexity.
