We present a technique for estimating the marking of a Petri net based on the observation of transition labels. In particular, the main contribution of the paper consists in deriving a methodology that can handle the case of nondeterministic transitions, i.e., transitions that share the same label. Under some technical assumptions, the set of markings consistent with an observation can be repre...

A recurrent neural network with noisy input is studied analytically, on the basis of a Discrete Time Master Equation. The latter is derived from a biologically realizable learning rule for the weights of the connections. In a numerical study it is found that the fixed points of the dynamics of the net are time dependent, implying that the representation in the brain of a fixed piece of informat...

We describe a new technique for reducing the number of nodes and symbols in automata based on tries. The technique stems from some results on anti-dictionaries for data compression and does not need to retain the input string, differently from other methods based on compact automata. The net effect is that of obtaining a lighter automaton than the directed acyclic word graph (DAWG) of Blumer et...

Joseph V. Walker, M.D. Hollis and Carter. 10/6 net. The sub-title of this book is "a study in design for living" and its main thesis?that health in the full sense of the word is dependent on more than physical well-being, that the medical officer of health should properly be concerned with the welfare of the "whole man", and that "no part of life can be irrelevant to wholeness of being"? will m...

In the process of mathematics learning, most elementary students never think but receive all the methods their teachers have taught. In other word, they don’t catch the basic concept in every unit. Based on the Petri-Net theory, this paper designs a guided learning system to correct the mis conception of elementary students. We expect to achieve the best effect of computer-assisted instruction ...

A neural net was used to analyse samples of natural images and text. For the natural images, components resemble derivatives of Gaussian operators, similar to those found in visual cortex and inferred from psychophysics 4]. While the results from natural images do not depend on scale, those from text images are highly scale dependent. Convolution of one of the text components with an original i...

The number theoretic analogue of a net in metric geometry suggests new problems and results in combinatorial and additive number theory. For example, for a fixed integer g ≥ 2, the study of h-nets in the additive group of integers with respect to the generating set Ag = {0}∪{±g : i = 0, 1, 2, . . .} requires a knowledge of the word lengths of integers with respect to Ag. A g-adic representation...

Kardiale komplikasies van chroniese nierversaking is die vernaamste oorsake van dood by hemodialise pasiënte. Na aanleiding hiervan is dit vir die verpleegkundige noodsaaklik om oor genoegsame ken­ nis te beskik — nie alleen op kardiale gebied nie, maar ook ten opsigte van die ander stelsels wat deur uremie beinvloed word. Die verpleegkundige moet ook die nodige vaardigheid bemeester om die pas...

Free-association norms indicate that words are organized into semantic/associative neighborhoods within a larger network of words and links that bind the net together. We present evidence indicating that memory for a recent word event can depend on implicitly and simultaneously activating related words in its neighborhood. Processing a word during encoding primes its network representation as a...

The title of our talk—an implicit reference to the English cliché like a spider weaving her web— intends to attract one’s attention to the metaphor that can be drawn between the dance of a spider weaving her web and a new lexicographic gesture that is gradually emerging from the work on Net-like lexical resources (Fellbaum, 1998; Baker et al., 2003; Gader et al., 2012). Our claim is that the in...