Hardware/Software Partitioning using Bayesian Belief Networks
J. T. Olson, J. Rozenblit, W. Jacak, C. Talarico - Hardware/Software Partitioning using Bayesian Belief Networks - IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS, Vol. 37, No. 5, 2007, pp. 655-668
In heterogeneous system design, partitioning of the
functional specifications into hardware (HW) and software (SW)components is an important procedure. Often, an HW platform is chosen, and the SWismapped onto the existing partial solution, or the actual partitioning is performed in an ad hoc manner. The partitioning approach presented here is novel in that it uses Bayesian belief networks (BBNs) to categorize functional components into HW and SW classifications. The BBN’s ability to propagate evidence permits the effects of a classification decision that is made
about one function to be felt throughout the entire network. In addition, because BBNs have a belief of hypotheses as their core, a quantitative measurement as to the correctness of a partitioning decision is achieved. A methodology for automatically generating
the qualitative structural portion of BBN and the quantitative link matrices is given. A case study of a programmable thermostat is developed to illustrate the BBN approach. The outcomes of the partitioning process are discussed and placed in a larger design
context, which is called model-based codesign.