Concept learning is an important problem in AI that consists of, given a set of training examples and counter-examples on a particular concept, identifying a model that is coherent with the training examples, i.e that classifies them correctly. The obtained model is intended to be reused for the purpose of classifying new examples. Version space is one of the formal frameworks developed for tha...

‎A universal schema for diagonalization was popularized by N.S‎. ‎Yanofsky (2003)‎, ‎based on a pioneering work of F.W‎. ‎Lawvere (1969)‎, ‎in which the existence of a (diagonolized-out and contradictory) object implies the existence of a fixed-point for a certain function‎. ‎It was shown that many self-referential paradoxes and diagonally proved theorems can fit in that schema‎. ‎Here‎, ‎we fi...

This paper offers two new arguments for a version of Reflection, the principle that says, roughly, that if one knew now what one would believe in the future, one ought to believe it now. The most prominent existing argument for the principle is the coherence-based Dutch Strategy argument advanced by Bas van Fraassen (and others). My two arguments are quite different. The first is a truthbased a...

Geochemical evidence suggests that the material accreted by the Earth did not change in nature during Earth's accretion, presumably because the inner protoplanetary disc had uniform isotopic composition similar to enstatite chondrites, aubrites and ungrouped achondrite NWA 5363/5400. Enstatite meteorites and the Earth were derived from the same nebular reservoir but diverged in their chemical e...

The key problem of the future theory of consciousness is how to incorporate altered states of consciousness within a new paradigm, as purely biochemical mechanisms are not accelerated up to several orders of magnitude, in comparison with subjective time sense dilation in altered states of consciousness in respect to the normal awake state. The electromagnetic (EM) component of ultralowfrequency...

concept analysis of transition from nursing student to clinical nurse: rodgers' evolutionary concept analysis     rafieef [1] , sajadihezaveh m [2] *     received: 21 feb, 2012 accepted: 27apr, 2012     abstract   background &aims; : the transition from nursing student to clinical nursing is a major challenge.the aim of this study was to clarify concept of transition in new graduate nursin...

Hallucinations are defined as perceptions unrelated to any mpirically observable objects in the environment. On the conrary, negative hallucinations refer to the inability to perceive bjects that are present. The pertinence of the latter experience as recently been put into question by the exploration of cognitive lindness. Cognitive blindness refers to an absence of the concious processing of ...