What are the basic differences between the fitness-based model [ 3] and the varying intrinsic fitness-based model [ 4]? Distinguish these two models in the light of analytical determination of scaling exponents. Compare the above evolution models with the preferential attachment– based model.

Question

Answer 1

For the first two parts, please refer to Tables 5.1 and 5.2
Please see Sections 5.6 and 5.7 for more details. Also refer to [3] and [4] for further details of
the analytical modeling and the determination of the scaling exponents.
In case of the preferential attachment-based model, nodal fitness is not considered in the
analytical determination of the scaling exponent. Therefore, the major difference between
the BA model and the other two models (i.e., fitness-based and varying intrinsic fitness-based
models) discussed here is as follows: In BA model, the chance of attracting more links in a
evolving network depends on aging. That is, nodes which are introduced earlier in a network
get more chances to become hub nodes. However, in real-world networks, fitness plays a major
role in the process of network evolution.