  As originally formulated in von Wright (1951) and Hintikka (1962), epistemic logic says nothing about how agents should react to new information. Segerberg introduced dynamic doxastic logic (1995, 1999) to bridge the gap between belief revision and epistemic logic. Moreover, dynamic epistemic logic was developed for the same purpose, but with an emphasis on multiagent contexts (see Plaza 1989, Baltag et al. 1998, van Ditmarsch et al. 2007). This framework benefits from theoretical contributions from philosophers, logicians, economists and computer scientists. A proper discussion of these developments would take us too far afield. The interested reader should consult the entry on  dynamic epistemic logic.  For Bayesian approaches to auto-epistemology see van Fraassen (1985, 1995). For a ranking-theoretic approach, see chapter 9 in Spohn (2012) as well as Hild (1998) and Spohn (2017b). For a very different approach to combining qualitative notions from traditional epistemology with probabilistic notions see Moss (2013, 2018), who defends the thesis that knowledge involves probabilistic contents.