In this paper, I consider some issues involving a certain closure principle for Structural Justification, a relation between a cognitive subject and a proposition that’s expressed by locutions like ‘S has a source of justification for p’ and ‘p is justifiable for S’. I begin by summarizing recent work by Peter Klein that advances the thesis that the indicated closure principle is plausible but ...

Existing web usage mining techniques focus only on discovering knowledge based on the statistical measures obtained from the static characteristics of web usage data. They do not consider the dynamic nature of web usage data. In this paper, we present an algorithm called Cleopatra (CLustering of EvOlutionary PAtTeRn-based web Access sequences) to cluster web access sequences (WASs) based on the...

The backbone of our methodology is the Time constrained Reactive Automaton TRA formalism which adopts a fundamental notion of space and time that restricts expres siveness in a way that allows the speci cation of only reactive spontaneous and causal compu tation Using the TRA model unrealistic sys tems possessing properties such as clairvoy ance caprice in nite capacity or perfect timing cannot...