We study four discrete-time stochastic systems on N, modeling processes of rumor spreading. The involved individuals can either have an active or a passive role, speaking up or asking for the rumor. The appetite for spreading or hearing the rumor is represented by a set of random variables whose distributions may depend on the individuals. Our goal is to understand—based on the distribution of ...

We present a software tool for examplet reuse. We define examplets to be goal-directed snippets of source code, often written for tutorial purposes, that show how to use program library facilities to achieve some task. Our tool allows users to specify both their goal (in free text) and their ‘situation’ (the source code on which they are working). The system combines text retrieval and spreadin...

This paper presents a system that performs skill extraction from text documents. It outputs a list of professional skills that are relevant to a given input text. We argue that the system can be practical for hiring and management of personnel in an organization. We make use of the texts and the hyperlink graph of Wikipedia, as well as a list of professional skills obtained from the LinkedIn so...

In Hungarian casual speech, [n] may not be fully pronounced before continuant consonants. In this paper the durational changes of the vowel and the nasal as well as the formants of the vowel were analyzed in VNC sequences. The spreading coarticulatory effect in these sequences is supposed to originate from the continuant C (fricatives and approximants) that modifies the [n] articulation. The re...

This paper describes a quantitative indicator for segmenting narrative text into coherent scenes. The indicator, called the lexical cohesion pro le (LCP), records lexical cohesiveness of words in a xed-length window moving word by word on the text. The cohesiveness of words, which represents their coherence, is computed by spreading activation on a semantic network. The basic idea of LCP is: (1...

Postcompletion error (PCE) is a type of systematic procedural error that people are prone to commit when there is one step to perform after they have accomplished their main task goal. A computational cognitive model developed previously for PCE in an interruption paradigm extends to a working memory load and capacity paradigm. The model explains PCE in terms of long-term declarative memory mec...

Summarization of multiple documents featuring multiple topics is discussed. The example trea.ted here consists of fifty articles about the Peru hostage incident tbr ])ecember 1996 through April 1997. They include a. lot of topics such as opening, negotiation, ending, and so on. The method proposed in this paper is based on spreading activation over documents syntactically and semantically annot...

We present spatio-temporal characteristics of spreading depolarizations (SD) in two experimental systems: retracting SD wave segments observed with intrinsic optical signals in chicken retina, and spontaneously occurring re-entrant SD waves that repeatedly spread across gyrencephalic feline cortex observed by laser speckle flowmetry. A mathematical framework of reaction-diffusion systems with a...

During depletion-driven vesicle adhesion, a stiff membrane's resistance to bending at fixed tension prevents contact angle equilibrium and vesicle spreading over an opposing vesicle, while more flexible vesicles partially engulf opposing vesicles. Estimates of the bending cost associated with the spreading contact line, relative to the adhesion energy, were consistent with the observed spreadin...