Interactivity and Entropy

Abstract

The most commonly used measures of accessibility are of the Hansen type (Hansen, 1959), i. e.

$$ {{f}_{i}} = \sum\limits_{j} {{{b}_{j}}q\left( {{{c}_{i}}_{j}} \right).} $$

(8.1)

“Accessibility ... is a slippery notion., one of those common terms that everyone uses until faced with the problem of defining and measuring it”, Gould (1969).